FILE NO. A05-004-1 Revised: Jan./2006 SERVICE MANUAL R410A System air conditioner The indoor units in the Super Heat Recovery Multi System are common to those used in the Super Modular Multi System air conditioner. Therefore refer to the service manuals A03-009, A03-010, and A03-011 separately issued.
WARNINGS ON REFRIGERANT LEAKAGE Important Check of Concentration Limit The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its concentration will not exceed a set limit. The refrigerant R410A which is used in the air conditioner is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws to be imposed which protect the ozone layer.
CONTENTS SAFETY CAUTION ............................................................................................ 4 1. OUTLINE ................................................................................................... 9 2. WIRING DIAGRAM ................................................................................. 14 3. PARTS RATING ...................................................................................... 30 4. REFRIGERANT PIPING SYSTEMATIC DRAWING ..............................
SAFETY CAUTION The important contents concerned to the safety are described on the product itself and on this Service Manual. Please read this Service Manual after understanding the described items thoroughly in the following contents (Indications/Illustrated marks), and keep them.
WARNING Check earth wires. Before troubleshooting or repair work, check the earth wire is connected to the earth terminals of the main unit, otherwise an electric shock is caused when a leak occurs. If the earth wire is not correctly connected, contact an electric engineer for rework. Do not modify the products. Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury. Prohibition of modification. Use specified parts. Do not bring a child close to the equipment.
WARNING Insulator check Ventilation After the work has finished, be sure to use an insulation tester set (500V mugger) to Ω or more between the charge section and the non-charge check the resistance is 2MΩ metal section (Earth position). If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side. When the refrigerant gas leaks during work, execute ventilation. If the refrigerant gas touches to a fire, poisonous gas generates.
• New Refrigerant (R410A) This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer. 1. Safety Caution Concerned to New Refrigerant The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed.
5. Recharge of Refrigerant When recharge of the refrigerant is required, charge the new refrigerant with the specified amount in the procedure as described below. Recover the refrigerant and check there is no refrigerant in the equipment. Leave it as it is for 1 to 2 minutes and check the indicator of the compound gauge does not return. Connect the charge hose to the packed valve service ports at gas side, liquid side, and balance side of the outdoor unit.
1. OUTLINE “Super Heat Recovery Multi System” is a multi air conditioning system which enables each indoor unit in a refrigerant line to independently select cooling or heating operation. As it is able to operate simultaneously in cooling and heating modes, further heat recovery becomes possible. This system is most suitable for a building etc.
1-1. Component Multi Using High-efficiency Refrigerant R410A 1. Outdoor units Inverter unit Corresponding HP Appearance 8 HP 10 HP 12 HP MAP0802FT8 MAP1002FT8 MAP1202FT8 Cooling capacity (kW) 22.4 28.0 33.5 Heating capacity (kW) 25.0 31.5 37.5 13 16 20 Model name Heat pump MMY- No. of connectable indoor units 2. Combination of outdoor units Corresponding HP Combined Model MMY- Cooling capacity (kW) Heating capacity (kW) Combined outdoor units No.
4. Flow selector units (FS unit) Model name Usage RBM-Y1121FE Capacity rank for indoor unit : Type 007 to 030 RBM-Y1801FE Capacity rank for indoor unit : Type 036 to 056 RBM-Y2802FE Capacity rank for indoor unit : Type 018 to 096 Appearance * Accessory part (Sold separately): Connection cable kit (RBC-CBK15FE), up to 15m. 5.
Type Concealed Duct High Static Pressure Type Slim Duct Type Under Ceiling Type High Wall Type Floor Standing Cabinet Type Floor Standing Concealed Type Floor Standing Type Appearance Model name Capacity rank Capacity code Cooling capacity (kW) Heating capacity (kW) MMD-AP0181H 018 type 2 5.6 6.3 MMD-AP0241H 024 type 2.5 7.1 8.0 MMD-AP0271H 027 type 3 8.0 9.0 MMD-AP0361H 036 type 4 11.2 12.5 MMD-AP0481H 048 type 5 14.0 16.0 MMD-AP0071SPH 007 type 0.8 2.2 2.
n Remote controllers Name Wired remote controller Simple wired remote controller Weekly timer CODE No. SuMoTuWeTh Fr Sa SET DATA SETTING TEST TEST UNIT No. SETTING R.C. H No. PROGRAM1 ˚C ˚F PROGRAM2 ERROR PROGRAM3 TEMP.
1 CN304 (GRY) 2 3 RED Motor drive circuit RY303 ~ 1 1 Fuse T3.
RC LM 1 2 1 2 DM YEL BLU ORN BLK RED FAN 9 8 7 6 5 4 3 2 1 CN083(WHI) 9 8 7 6 5 4 3 2 1 9 H Color indication M L PMV 6 4 3 1 2 5 6 4 3 1 2 5 FS DP LM FS 1 2 3 (BLU) 1 2 3 (GRN) 1 2 3 (RED) 1 2 3 CN068 1 2 3 CN033 1 2 3 CN030 PMV 1 2 3 4 5 6 (BLU) 1 2 3 4 5 6 CN082 UL RY007 RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY PNK : PINK ORN : ORANGE BRW : BROWN GRN : GREEN P301 (BLK) RY002 RY001 RY006 1 CN304 (GRY) 2 RY005 Fuse T5.
YEL BLU BLK ORN 1 2 3 1 2 3 H M L FS 2 1 2 1 2 1 2 1 DP LM 6 4 3 1 2 5 6 4 3 1 2 5 FS 1 2 3 (BLU) 1 2 3 (GRN) 1 2 3 (RED) 1 2 3 CN068 1 2 3 CN033 1 2 3 CN030 FAN 9 8 7 6 5 4 3 2 1 CN083(WHI) 9 8 7 6 5 4 3 2 1 Color indication PMV LM RED RC DM PMV 1 2 3 4 5 6 (BLU) 1 2 3 4 5 6 CN082 UL RY007 CN301 (BLK) RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY PNK : PINK ORN : ORANGE BRW : BROWN GRN : GREEN RY002 RY001 RY006 Heater 1 CN304 (GRY) 2 RY005 3 3 1 1 2 2
RC 1 PMV LM 3 4 5 6 DM 1 2 1 2 H M L LM DM RED BLK ORN BLU YEL FAN 7 5 3 1 CN083 9 (WHI) 9 7 5 3 1 CN068 1 (BLU) 1 FS 1 1 3 3 6 4 3 1 2 5 6 4 3 1 2 5 FS 3 CN033 3 (GRN) 1 1 PMV 1 2 3 4 5 6 CN082 1 2 3 4 5 6 (BLU) 3 CN030 3 (RED) UL RY007 P301 BLK RY002 RY004 RY001 RY006 1 (GRY) CN304 3 RY005 1 1 Control P.C.
RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY: GRAY PNK : PINK ORN: ORANGE BRN : BRWN GRN: GREEN PMV FM CN68 (BLU) 1 1 DP CN334 5 4 1 (WHI) 5 4 3 2 1 RY302 CN304 (GRY) RED WHI CN67 (BLK) TR 1 1 2 3 3 WHI Power supply single phase 220-240V 50Hz 220V 60Hz 5 CN333 5 (WHI) 1 2 3 4 5 6 CN82 1 2 3 4 5 6 (BLU) RY303 1 1 3 3 A B Outdoor unit Wired remote controller BLK CN01 CN02 (WHI) (BLU) CN03 (RED) MCC-1401 1 2 1 2 CN001(WHI) Adapter for wireless remote controller AI-NET 1 2
6 4 3 1 2 5 6 4 3 1 2 5 1 2 3 1 2 3 CN68 (BLU) 1 1 2 2 3 3 DM CN333 1 (WHI) 1 5 4 2 1 5 4 3 2 1 1 1 WHI 1 3 1 2 2 3 1 CN34 3 2 1 (RED) CN33 1 2 3 4 5 (WHI) Indoor control P.C. board ~ Fuse T3.15A + 250V~ 250V~ 3 3 BLK 1 2 3 4 5 6 CN82 1 2 3 4 5 6 (BLU) Motor drive circuit Fuse T6.
8 (BLK) RY007 P301 1 CN304 (GRY) 2 H RY004 M L DP LM 1 2 3 (BLU) 1 2 3 (GRN) 1 2 3 CN068 1 2 3 CN033 1 2 3 1 2 3 FS CN030 (RED) UL RY002 RY006 1 2 1 2 1 2 1 2 1 2 1 2 TC1 1 2 3 CN100 1 2 3 (BRN) CN104 CN102 CN101 (YEL) (RED) (BLK) RY001 3 1 1 CN309 2 2 (YEL) 3 3 Power supply circuit CN066 (WHI) CN044 CN040 CN041 (BRW) (BLU) (BLU) 1 2 20 TR 1 2 1 2 EMG OC CN050 (WHI) 1 2 3 1 3 1 2 3 1 2 3 Network adaptor (Option) MCC-1401 CN01 1 2 (WHI) 1 2 A B U1 U2 CN1 (WHI) CN02 (BL
1 2 3 4 5 1 2 3 4 5 FS 1 1 2 2 3 3 DM CN304 1 (GRY) 2 RED WHI BLK RY303 Indoor control P.C. board ~ Earth screw 21 RED WHI R(L) S(N) CN66 (WHI) BLU 1 1 BLU CN40 (BLU) 2 2 Closed end terminal Power supply single phase 200-240V 50Hz 200V 60Hz Fuse T6.3A 250V~ P301 1 2 Flow selector unit earth screw Indoor unit BLK 1 1 2 BLK 3 3 Fuse T3.
1 2 3 1 2 3 CN334 5 4 2 1 (WHI) 5 4 3 2 1 1 CN68 (BLU) CN333 1 (WHI) 1 3 3 TA TCJ TC2 TC1 1 1 2 2 1 1 2 2 1 1 2 2 1 3 1 2 3 6 4 3 1 2 5 6 4 3 1 2 5 5 5 RY302 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 CN82 (BLU) CN33 (WHI) 1 1 3 3 CN34 (RED) CN104 CN102 CN101 (YEL) (RED) (BLK) 3 Motor drive circuit 1 1 3 3 CN304 (GRY) 1 1 WHI 3 3 CN67 (BLK) CN080 (GRN) RY303 LM RED CN100 (BRW) CN103 (GRN) FUSE FUSE T6.3A 250V~ T3.15A 250V~ Control P.C.
BLK RED 5 4 3 2 1 S HBS CN22 1 2 3 4 5 6 5 4 3 2 1 6 5 4 3 2 1 6 5 4 3 6 5 4 3 1 1 CN82 (BLU) 6 5 4 3 2 6 5 4 3 2 1 CN33 (WHI) CN210 (WHI) CN44 CN40 (BRW) (BLU) DC 15V 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 Flow selector unit (Sold separately) Power supply circuit CN213 (WHI) Infrared rays receive and indication parts (MCC-861) (MCC-1510) Control P.C.
RC 6 4 3 1 2 5 6 4 3 1 2 5 RED BLK ORN BLU YEL FAN 7 5 3 1 CN083 9 (WHI) 9 7 5 3 1 H M L CN068 (BLU) 1 DP 3 LM 1 PMV 1 2 3 4 5 6 CN082 1 2 3 4 5 6 (BLU) CN033 3 (GRN) UL RY007 P301 (BLK) RY002 RY004 (GRY) CN304 3 3 RY005 1 1 AC IN RED Control P.C.
WHI RED RC 2 4 5 6 3 FM WHI GRN RED PMV 2 4 5 6 3 6 4 3 1 2 5 6 4 3 1 2 5 RC RED BLK ORN BLU YEL FAN 7 5 3 1 CN083 9 (WHI) 9 7 5 3 1 RED BLK ORN BLU YEL FAN 7 5 3 1 CN068 1 CN083 9 (WHI) 9 (BLU) 1 7 5 3 1 H For AP0071BH,AP0091BH,AP0121BH M L 3 3 1 1 3 CN033 3 (GRN) 1 3 1 2 3 CN030 (RED) UL RY007 R301 (BLK) RY002 RY004 RY006 1 3 (GRY) CN304 RY005 1 1 3 3 AC IN 1 1 RY001 Control P.C.
FM BRW 3 4 5 6 7 PMV LM 2 1 2 1 M H L 6 4 3 1 2 5 6 4 3 1 2 5 LM RED BLK ORN BLU YEL FAN 7 5 3 1 CN083 9 (WHI) 9 7 5 3 1 CN068 (BLU) 1 DP 1 1 3 FS 3 CN033 3 (GRN) PMV 1 2 3 4 5 6 CN082 1 2 3 4 5 6 (BLU) 1 3 CN030 1 2 3 (RED) UL RY007 P301 (BLK) RY002 RY004 RY001 RY006 1 (GRY) CN304 3 RY005 1 1 FUSE CN066 (WHI) 1 2 CN044 (BRW) 1 2 Power supply circuit CN050 (WHI) 1 2 3 RC 1 3 CN075 (WHI) CN074 1 (WHI) 1 1 2 3 4 5 BLK BLU 1 2 1 2 CN041 (BLU) BLK CN040 (BLU) BLU WHI 26
1 3 : RED : WHITE : YELLOW : BLUE : BLACK : GRAY : PINK : ORANGE : BRWN : GREEN 5 4 1 CN334 5 4 3 2 1 (WHI) 1 1 3 3 5 CN333 5 (WHI) 1 3 1 2 3 (External static pressure setup) 1 2 3 4 5 6 CN82 1 2 3 4 5 6 (BLU) Drain pump type ("SPH" Type) CN68 (BLU) 1 1 CN34 (RED) CN33 1 2 1 2 1 2 1 2 CN112 (WHI) CN111 (WHI) CN110 (WHI) 1 2 3 4 5 (WHI) CN71 (CHK) CN72 (DISP) FS 1 3 1 2 3 RY302 DM 3 3 Motor drive circuit 1 CN304 (GRY) 3 RED WHI Fuse T3.15A 250V~ Fuse T6.
CN311(BLU) SV41 BLU 4 3 2 4 3 2 1 4 3 1 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 5 4 3 2 1 5 4 3 2 1 4 3 2 1 4 3 2 1 CN302 (RED) CN500 (WHI) CN501 (RED) CN508 (RED) CN509 (BLK) CN510 (WHI) CN513 (BLU) CN512 (BLU) 1 1 3 3 CN306 (WHI) 1 1 3 3 CN308 (BLU) CN502 (WHI) CN503 (PNK) RY500 1 1 Interface Control P.C.
Supplied wire (Power supply) Earth screw SVD SVD 1 1 29 1 1 3 3 CN01 (RED) COM SVD SVS SVDD SVSS BRW BLU YEL WHI ORN 1 1 3 3 5 5 7 7 CN10 (WHI) Control P.C. board MCC-1431 CN02 (GRN) 9 9 Control P.C. board for indoor unit 3 3 CN67 (BLK) 1 2 3 4 5 CN81 1 2 3 4 5 (BLK) R(L) S(N) 1 2 3 4 5 1 2 3 4 5 Power supply single phase 220-240V 50Hz Supplied wire (Control wiring) Indoor unit earth screw 2-3.
3. PARTS RATING 3-1.
1-way Air Discharge Cassette (Compact type) Type Model MMU-AP 0071YH 0091YH Fan motor 0121YH AF-200-22-4N-1 Running capacitor for fan motor AC 400V, 1µF Drain pump motor PJD-05230TF-1 Float switch FS-0208-602 Control P.C.
Concealed Duct High Static Pressure Type Model MMD-AP Fan motor 0181H 0241H 0271H 0361H 0481H STF-200-160-4B STF-200-160-4A STF-200-260-4C STF-200-260-4B AC 500V, 4µF AC 400V, 8µF AC 450V, 6µF AC 400V, 8µF Running capacitor for fan motor Drain pump motor ADP-1409 Float switch FS-0218-102-6 Pulse motor EDM-MD12TF-3 Pulse motor valve EDM-B40YGTF TA sensor EDM-B60YGTF-1 Lead wire length : 1200mm TC1 sensor Ø4 size lead wire length : 1200mm Vinyl tube (Blue) TC2 sensor Ø6 size lead
Floor Standing Cabinet Type Model MML-AP 0071H 0091H 0121H 0151H 0181H 0241H Fan motor AF-200-19-4F AF-200-45-4F AF200-70-4K Running capacitor for fan motor AC450V, 1.2µF AC400V, 1.
3-2. Outdoor Unit Model MMY- Compressor MAP0802FT8 MAP1002FT8 DA421A3FB-23M MAP1202FT8 Output: : 3.
TE sensor TS2 sensor Check joint (Low pressure) Low pressure sensor SV2 valve SV42 valve SV3D valve SV3E valve 35 SV3C valve SV11 valve SV41 valve SV5 valve SV6 valve SV3A valve TK1, TK2 sensor TS1 sensor High pressure SW1 SV12 valve TD1 sensor PMV 4-way valve High pressure SW2 SV3B valve TD2 sensor TL sensor Check joint (High pressure) TK3 sensor TK4 sensor High pressure sensor Check joint (Liquid pipe) Front side Rear side 3-5.
3-6. Name of Each Part [Concealed Duct Type] Earth screw Situated inside the electric parts box. 2-way discharge/3-way discharge 2-way discharge or 3-way discharge can be selected according to the shape or arrangement of the room. For details, consult with the dealer from which you have purchased the air conditioner. Air filter Filters dust and other trash. (Air filter is situated in the air grille.) Clip To open/close the air inlet grille.
3-7. Parts Name of Remote Controller [Floor Standing Cabinet Type] Air outlet/Air outlet louver Changes the direction of the air flow. Earth screw Situated inside the electric parts box. Air filter Filters dust and other trash. (Situated inside the air grille.) Display section In the illustration, all of the indicators are displayed for the purpose of explanation. In normal operation, only the icons relevant to the mode of operation would be displayed.
3-8. Correct Usage Operation section Push each button to select the desired operation. This remote controller can operate up to a maximum 8 indoor units. • The remote controller can memorize user settings and can be recalled and activated by a single press of ON / OFF button. the Preparation 1 7 TEMP.
REQUIREMENT How to set up the air direction Push SWING/FIX button. [In Cooling operation] • The operation starts after approximately 1 minute. [In Heating operation] • In heating operation, the fan operation may continue for approximately 30 seconds after the air conditioner has stopped. • The indoor fan continues in preheat operation for 3 to 5 minutes, and then blows out the hot air. symbol is displayed on the remote controller.
2-way discharge or 3-way discharge can be selected according to the configuration of the room. For details, consult with the dealer from which you have purchased the air conditioner. INFORMATION • If cooling operation has been selected while the louver is in a downward position, the cabinet or surface of the louver may become wet with dew. • If heating operation has been selected while the louver is in a horizontal position, the room temperature may not be even.
Right/Left air direction adjustment Floor Standing Cabinet Type To change the air outlet direction to the right or left side, set the vertical louver located behind the horizontal louver to the desired direction. [In Cooling operation] INFORMATION • If cooling operation is performed with a donwards discharge, dew may form on the surface of the cabinet or the horizontal louver resulting in possible dripping.
3-10. Timer Operation Floor Standing Type Adjustment of air Flow direction upwards/downwards The type of timer operation can be selected from the following three types. OFF timer : The operation stops when the time on the timer has reached the set time. Repeat OFF timer : The unit will stop, every time the set time period has elapsed. ON timer : The unit will start when the time on the timer has reached the set time.
3-11. Installation 3-12. Maintenance Installation location Cleaning of air filter WARNING • When [FILTER] is displayed on the remote controller, its is time to check and if necessary clean the filter. • Clogging of air filter decreases the cooling/heating effect. • Select a location for installation that will be able to safely support the weight of the unit. If the installation location is not strong enough to support the unit and the unit falls, injury could result. CODE No.
Re-installing the air filter • Insert the upper portion of air filter confirming alignment with the right and left edges of the indoor unit until it is located. • Close the air inlet grille. If the FILTER lamp on the indoor unit is lit, push the FILTER button on the remote controller or the TEMPORARY button on the indoor unit to turn off the lamp. High Wall Type (Model : 1H series) • Push the projection at the center of the air filter.
3-13. Air Conditioner Operations and Performance If you do not plan to use the unit for more than 1 month 1. Operate the fan for 3 to 4 hours to dry the inside of the unit • Operate “FAN” mode. 2. Stop the air conditioner and turn off the main power supply or the circuit breaker. Check before operation Wipe with a dry soft cloth • Check whether earth wire is disconnected or out of place. • Check that air filter is installed to the indoor unit.
3-15. When the Following Symptoms are Found Air conditioner operating conditions For specified performance, operate the air conditioner under the following temperature conditions: Cooling operation Room temperature CAUTION Heating operation Check the points described below before contacting your local service repair center. Outdoor temperature : –10°C to 43°C (Dry-bulb temp.) Outdoor unit • White misty cold air or water is blown out. • Sometimes, the noise “Pushu !” is heard.
Confirmation and check When a error has occurred in the air conditioner, the check code and the indoor unit No. will appear on the display part of the remote controller. The check code is only displayed during while the unit is operating. If the display disappears, operate the air conditioner according to the following “Confirmation of error history” for confirmation. CODE No. UNIT No. R.C. Check code No. Indoor unit No.
4. REFRIGERANT PIPING SYSTEMATIC DRAWING 4-1.
4-2. Explanation of Functional Parts Functional part name Solenoid valve SV3A (Connector CN313: Blue) Open : Allows oil to return to the outdoor unit via the balance pipe. SV3C (Connector CN314: Black) Open : Pressurizes the oil tank.. SV3D (Connector CN323: White) Open : Supplies oil to the compressor from the oil separator. SV3E (Connector CN323: White) Open : Turns on during operation and balances oil between compressors.
Functional part name Pressure High pressure sensor sensor Low pressure sensor Heater Functional outline (Connector CN501: Red) 1) Detects high pressure and uses it to control the capacity of the compressor. 2) Detects high pressure during all cooling operation and uses it to control the fan when cooling with low outside air. 3) Detects under-cool of the indoor unit of which heating thermo.-ON during all heating operation and simultaneous operation.
Configuration of outdoor unit heat exchanger Flow Selector Unit (FS Unit) RBM-Y1122FE Discharge gas pipe Liquid pipe Propeller fan Strainer Strainer Capillary tube Capillary tube Fan motor Check valve Suction gas pipe SVS Capillary tube SVD SVDD SVSS Strainer To indoor liquid side Main heat exchanger To indoor gas side RBM-Y1802FE Wind Wind * RBM-Y1801FE has two “SVS” valves.
4-3. Indoor Unit Liquid side Gas side Strainer Capillary tube Air heat exchanger at indoor side Pulse Motor Valve (PMV) Distributor Sensor (TC2) Sensor (TCJ) Fan Sensor (TC1) Sensor (TA) M Fan motor (NOTE) MMU-AP0071YH to AP0121YH type air conditioners have no TC2 sensor.
5. SYSTEM REFRIGERANT CYCLE DRAWING 5-1. Refrigerant Piping Systematic Diagram in System Selection of operation mode For the selection of each operation mode, refer to the below table: “Stop Once” this means the system does not operate for 3 minutes after operation before update has stopped.
5-2.
In low outside temperature (15°C or less: Criterion) Header unit Follower unit FM FM TE1 * Main heat exchanger * SV12 PMV2 PMV1 PMV3 4-Way valve * Main heat exchanger * PMV3 OFF 4-Way valve OFF SV11 TS1 SV5 Pd sensor TS1 TS2 Pd sensor SV6 SV2 SV6 TL Pd sensor TS2 Pd sensor SV2 OS OS SV3D SV3D SV41 Liquid tank SV42 HP HP SV3C TK3 TK1 SV42 HP Accumulator HP SV3C TD1 TD2 Compressor 2 (Inverter) Compressor 1 (Inverter) TD1 SV41 Compressor 1 (Inverter) Liquid tan
5-3.
5-4.
5-5.
5-6.
6. CONTROL OUTLINE 6-1. Indoor Unit 6-1-1. Control Specifications No. Item Outline of specifications 1 Power supply is reset. (1) Identification of outdoor unit When the power supply is reset, the outdoor units are individually identified and communication is established. (2) Check code clear When the power supply is reset, the check code is also reset. If an abnormal status is still present upon restart the check code will be displayed again on the remote controller.
No. 6 Outline of specifications Item Prevention of cold air discharge (1) In all heating operation, the upper limit of the fan tap is set by one with higher temperature of TC2 sensor and TCJ sensor. • When B zone has continued for 6 minutes, the operation shifts to C zone. • In defrost time, the control point is set to +6°C.
No. Item Outline of specifications Remarks 8 Recovery control for cooling refrigerant and oil (1) The indoor unit which stops operation, thermostat is OFF, or operates in FAN mode opens PMV of the indoor unit by the specified opening degree when cooling refrigerant or oil recovery signal is received from the outdoor unit. (2) Drain pump of 4-way air discharge cassette type and concealed duct type operate during recovery control mode. • Recovery operation is usually executed every 2 hours.
No. Item 15 “ ” and “ ” display (Operation and heating stand-by) Outline of specifications .......... Display on remote controller (1) • “P05” is one of displays of power wire missing. • “P05” of power cable is detected. • “COOL/DRY” operation cannot be performed because the other indoor unit is under “HEAT” operation. • “HEAT” operation cannot be performed because COOL priority is set (Outdoor I/F P.C. board SW11 1-bit is ON) and the other indoor unit is under “COOL/DRY” operation.
6-2. Outdoor Unit 6-2-1. Operation Start/Operation End The compressor, solenoid valve, pulse motor valve (PMV), outdoor fan, etc. are controlled by a command from the indoor controller. The follower outdoor unit starts/stops by a command from the header outdoor unit. No. 1 Item Pulse Motor Valve (PMV) control Operation explanation and applied data, etc. (1) PMV control (using two PMV, 1 and 2) • Each PMV is controlled between 90 to 1000 pulses during operation.
No. Item Operation explanation and applied data, etc. Remarks 3 Capacity control 1) The capacity request command received from the indoor controller determines the inverter frequency control of the outdoor unit. 2) The two compressors in each outdoor unit swap starting order on successive operation. • Min. frequency: 26Hz 4 Oil level detection control 1) Measurement of sensors TK1 to TK4 is used to determine whether the correct amount of oil is present in the compressor case.
No. 5 6 7 Item Oil short protective control Refrigerant/Oil recovery control Defrost control (Reverse cycle defrost method) Operation explanation and applied data, etc. This control is provided to prevent oil shortage occurring in the compressors of each outdoor unit. The control is achieved by ON/OFF operation of the solenoid valves SV3A, SV3B, SV3C and SV3D.
No. Item Operation explanation and applied data, etc. 8 Release valve control (1) SV2 gas balance control In order to decrease the starting load on the compressor, SV2 valve is opened during the time the compressor is ‘OFF’, and the gas is balanced. (2) SV2 high pressure release control This function limits the pressure level during the low frequency operation of the inverter.
No. Item Operation explanation and applied data, etc. 10 Compressor stop due to high pressure release Each compressor is stopped should the Pd pressure sensor reach a value of 3.5 MPa. This control is performed by the header unit and any follower units. 11 Case heater control Heating is provided for both the compressor case and accumulator. When the compressor in any outdoor unit is stopped, the heater is switched on to prevent accumulation of refrigerant.
Other cautions 1. Cooling operation in low ambient temperatures 1) The indoor unit freeze prevention control system (TC sensor) may decrease the command frequency to the outdoor unit when low coil temperatures are detected. 2) The cooling capacity control may decrease the command frequency to the outdoor unit when low ambient temperature is detected. 3) When the discharge temperature sensor value reaches 60°C or below, the frequency may be increased above the required demand from the indoor unit. 2.
Oil equation control schematic diagram Header outdoor unit (MMY-MAP1202FT8) Follower outdoor unit (MMY-MAP1202FT8) Unit to send oil Unit to received oil FM FM TE1 * Main heat exchanger * Sensor TO SV12 PMV2 PMV1 PMV3 4-Way valve * Main heat exchanger * PMV3 OFF 4-Way valve OFF SV11 TS1 SV5 Pd sensor TS2 Pd sensor SV6 TS1 Pd sensor SV2 TL Pd sensor TS2 SV6 SV2 OS OS SV3D SV3D SV41 Liquid tank SV42 HP HP TK3 TK1 SV42 HP SV3C TD1 TD2 Compressor 1 (Inverter) TD1
7. APPLIED CONTROL 7-1. Indoor Unit 7-1-1. Setup of Selecting Function in Indoor Unit (Be sure to Execute Setup by a Wired Remote Controller) Execute the setup operation while the unit stops. TEMP. 3 5 6 FILTER RESET TEST ON / OFF TIMER SET FAN MODE TIME SWING/FIX VENT SET CL 4 UNIT 1 1 Push SET , 2 CL , and TEST buttons simultaneously for 4 seconds or more. The firstly displayed unit No. indicates the master indoor unit address in the group control.
Table: Function selecting item code (DN) (Items necessary to perform the applied control at the local site are described.) DN Description Item 0001 : 150H 0003 : 5000H At shipment 01 Filter display delay timer 0000 : None 0002 : 2500H 0004 : 10000H 02 Dirty state of filter 0000 : Standard 0001 : High degree of dirt (Half of standard time) 0000 : Standard 03 Central control address 0001 : No.1 unit 0099 : Unfixed 0064 : No.
TYPE Item code [10] Setup data Type Abbreviated Model name 0000 1-way Air Discharge Cassette MMU-AP XXX SH 0001 4-way Air Discharge Cassette MMU-AP XXX H 0002 2-way Air Discharge Cassette MMU-AP XXX WH 0003 1-way Air Discharge Cassette (Compact type) MMU-AP XXX YH 0004 Concealed Duct Standard MMD-AP XXX BH 0005 Slim Duct MMD-AP XXX SPH, SH 0006 Concealed Duct High Static Pressure MMD-AP XXX H 0007 Under Ceiling MMC-AP XXX H 0008 High Wall MMK-AP XXX H 0010 Floor Standing Cabin
7-1-2. How to Set Up the Cooling Only Indoor Unit When connecting an indoor unit for use in cooling only. A flow selector unit is not connected. It is necessary to setup the unit. Perform setup as per the following procedure. Setup of the indoor unit is performed by use of a wired remote controller. If a wired remote controller is not used, for setup purposes a wired controller must be temporarily connected.
7-1-3. Setting When Connecting Multiple Indoor Units to a FS unit Cautions to connection of indoor unit • When connecting multiple indoor units to a single FS unit, it is necessary to set up the Item code. This should be done after the addressing of the units. • When connecting multiple indoor units to a single FS unit, only group control is available. Remote controllers cannot be connected to individual units.
n In case of not setting 01 to Item code “0E” When more than one indoor unit has been set up as a group to one FS unit and you have forgotten to set 01 on Item code “0E” on all the indoor units, the following may occur: 1) When AUTO operation is selected on the remote controller and cooling operation and heating operation are required, hot air may be discharged from the cooling operation unit or cool air may be discharged from the heating operation unit (or fan stops).
7-1-4. Applied Control in Indoor Unit n Remote location ON/OFF control box (TCB-IFCB-4E) [Wiring and setup] • Use the exclusive connector for connection with the indoor control P.C. board. • In a group control, the system can operate when connecting with any indoor unit (Control P.C. board) in the group. However when taking out the operation/error signal from the other unit, it is necessary to take out from each unit individually.
n Ventilating fan control from remote controller [Function] • The start/stop operation can be operated from the wired remote controller when air to air heat exchanger or ventilating fan is installed in the system. • The fan can be operated even if the indoor unit is not operating. • Use a fan which can receive the no-voltage A contact as an outside input signal. • In a group control, the units are collectively operated and they can not be individually operated.
n Leaving-ON prevention control [Function] • This function controls the indoor units individually. It is connected with cable to the control P.C. board of the indoor unit. • In a group control, it is connected with cable to the indoor unit (Control P.C. board), and the item code - is set to the connected indoor unit. • It is used when the start operation from outside if unnecessary but the stop operation is necessary.
7-2. Outdoor Unit 7-2-1. Applied Control in Outdoor Unit The following functions become available by setting the switches on the outdoor interface P.C. board. Function No. 1 Outdoor fan high static pressure shift Switch No. Bit SW10 2 Interface P.C. board of outdoor unit Switch position detail SW10 Bit 2 For setup of outdoor fan high static pressure shift 7-2-1-1.
7-2-2. Applied Control in Outdoor Unit The following functions are available by using a separately supplied P.C. board. Set up the switches on the outdoor unit (U1). No. Function Switch No. Bit Connector No. Used control P.C.
7-2-2-1. Power Peak-cut Control (Standard) Operation Header outdoor unit interface P.C. board SW07 Set up Bit 1. CN513 (BLU) The upper limit capacity of the outdoor unit is restricted based on the demand request signal from outside.
7-2-2-2. Power Peak-cut Control (Expansion) Header outdoor unit interface P.C. board Operation SW07 Set up Bit 1. ON Bit 2. CN513 (BLU) (Setup to Header unit only) Connection cable Power peak-cut control board *1 PJ17 (4P WHI) Input signals of SW1 and SW2 are acceptable even if they are upper than pulse input (100mm. sec.) or serially made. ∗ Be sure to prepare a contact for each terminal. DC 1.
7-2-2-3. Snowfall Fan Control Header outdoor unit interface P.C. board Operation The outdoor unit fan operates when a Snowfall signal is received. Input signal Terminal Operation CN509 (4P BLK) ON Connection cable External master ON/OFF control board PJ17 OFF COOL (SMC) (4P WHI) ON OFF HEAT COOL COM Snowfall fan control (Operates outdoor unit fan.) Usual operation (Releases control.) The control contents are accepted during leading and trailing of the input signal.
7-2-2-5. Night Operation Control Header outdoor unit interface P.C. board CN508 (4P RED) Operation Reduce emitted noise during night by resting the compressor and fan speed. Terminal ON Night (sound reduction) operation control Connection cable External master ON/OFF control board PJ17 (4P WHI) COOL (SMC) Operation Input signal OFF ON Usual operation OFF HEAT COOL COM The control contents are accepted during leading and trailing of the input signal.
8. TEST OPERATION 2. In case that a central control system is connected (Before address setup) 8-1. Procedure and Summary of Test Operation A test operation is executed in the following procedure. When a trouble or an error occurs in each step, remove causes of a trouble or an error referring to the section “9. Troubleshooting”. Central control units Check the basic items, mainly the installation work. Be sure to enter the check results in the check list 1 and 2.
3.
8-3. Check at Main Power-ON 8-4. Address Setup After turning on the main power of the indoor units and outdoor unit in the refrigerant line to be executed with a test operation, check the following items in outdoor and each indoor unit. After power-ON, set up the indoor address from the interface P.C. board of the outdoor unit. (After turning on the main power, be sure to check in order of indoor unit → outdoor unit.
8-4-3. Address Setup Procedure REQUIREMENT In this air conditioner, it is required to set up address to the indoor unit before starting operation. Set up the address according to the following setup procedure. CAUTION 1. Set up address after wiring work. 2. It requires maximum 10 minutes (Usually, approx. 5 minutes) to set up automatically an address to 1 line. 3. To set up an address automatically, the setup at outdoor side is necessary. (Address setup cannot be performed by power-ON only.) 4.
8. How to set up the terminal resistance When all the address setups have finished in the same refrigerant circuit system, put the terminal resistance in the same central control line into one. • Remain only SW30-2 of the header outdoor unit with address 1 as ON. (With end terminal resistance) • Set up SW30-2 of the other header outdoor units to OFF. (Without terminal resistance) 9. Connect the relay connector between [U1, U2] and [U3, U4] of the header unit for each refrigerant line. 10.
Note 1) When setting the line address from the remote controller, do not use address 29 and 30. The address 29 and 30 cannot be set up in the outdoor unit. Therefore if they are incorrectly set up, a check code [E04] (Indoor/outdoor communication circuit error) is output. • To confirm all the unit numbers from an arbitrary wired remote controller; (Operation while the air conditioner stops) The indoor unit No. and position in the same refrigerant line can be confirmed.
• To change all the indoor addresses from an arbitrary wired remote controller; (When the setup operation with automatic address has finished, this change is available.) Contents : Using an arbitrary wired remote controller, the indoor unit address can be changed for each same refrigerant line ∗ Change the address in the address check/change mode.
In case of increase the address-undefined indoor units (Extension, etc.) If set up the indoor address of which address is undefined accompanied with extension of indoor units, replacement of P.C. board, etc, follow to the methods below. 8-4-4. Check after Address Setup When Central Control System is Connected When the central control system is connected, check the following setup has finished after address setup. Method 1 Set up an address individually from a wired remote controller.
8-5. Troubleshooting in Test Operation If the phenomena appear, such as a check code is output or the remote controller is not accepted in power-ON after cabling work or in address setup operation, the following causes are considered. 8-5-1. A check Code is Displayed on the Remote Controller Check code Outdoor unit displayed on 7-segment remote controller display E04 E19-00 Cause Countermeasures Outdoor power is formerly turned on. Turn on the power again.
8-5-2. Operation from remote controller is not accepted and a check code is displayed on 7-segment display of the interface P.C. board of the outdoor unit. Remote controller status 7-segment display of outdoor unit No response L08 E19-00 Cause Countermeasures Line addresses and indoor addresses of all the connected indoor units are unset. Set up addresses. There is no outdoor unit of group control. Set up group address. Indoor unit power is not turned on. Turn on the power again.
Incorrect wiring example (Fig. 1) Remote controller status Header unit 7-segment display No response E19-00 Incorrect example Header unit Header unit U3/U4 U5/U6 Indoorunit Indoorunit Indoorunit Indoorunit (Fig. 2) Remote controller status Header unit 7-segment display No response E19-02 Incorrect example U5/U6 Header unit Follower unit U1/U2 Indoorunit (Fig.
8-6. Test Operation Check 8-6-1. Fan Operation Check START Push [START/STOP] button. When an error code has been displayed on the remote controller, refer to Section 8-5-1. Select the operation mode [FAN]. Is air discharged from the discharge port of the indoor unit? NO Check indoor fan, fan motor and fan circuit. (Ensure power has been isolated before removing any covers.) NO Check for items in contact with fan. (Ensure power has been isolated before removing any covers.
Wireless remote controller (Except 4-way Air Discharge Cassette type, Under Ceiling type and 1-way Air Discharge Cassette type (2 Series)) 1 2 3 4 Remove the screw which fixes the name plate to the receiver part on the wireless remote controller. Remove the nameplate of the receiver section by inserting a minus screwdriver, into the notch at the bottom of the plate, and set the Dip switch to [TEST RUN ON]. ON / OFF Execute a test operation with button on the wireless remote controller.
In case of wireless remote controller (for Under Ceiling type and 1-way Air Discharge Cassette type (2 Series)) Procedure Description Turn on power of the air conditioner. 1 2 The operation is not accepted for 5 minutes when power has been turned on at first time after installation, and 1 minute when power has been turned on at the next time and after. After the specified time has passed, perform a test operation.
2. Test operation START Refer to “Test operation procedure” of indoor remote controller. Test operation for one indoor unit YES Operation start NO YES The operation does not start approx. 3 minutes after power-ON or after operation stopped. (NOTE) After power-ON, it may require Max. 10 minutes to start the operation due to the initial communication of the system. Is cold air or hot air discharged? Check operation status of the compressor. YES Check direction of the louver.
(NOTE 1) Criteria for judging difference between suction and discharge temperature 1. Cooling After operation for a minimum of 30 minutes in [COOL] mode, check the dry bulb temperature difference. Temperature difference: 8°C or more between suction and discharge air of the indoor unit. (In Max-Hz operation) 2. Heating After operation for a minimum of 30 minutes in [HEAT] mode, check the dry bulb temperature difference.
8-7. Service Support Function 8-7-1. Function to Start/Stop (ON/OFF) Indoor Unit from Outdoor Unit The following functions enables the start and stop of the indoor units using the switches on the interface P.C. board of the header unit. No. Function Outline 1 All cooling test operation Changes the mode of all the connected indoor units collectively to cooling test operation. Note) Control operation same as test operation for remote controller.
1. All cooling test operation function This function is provided to change collectively the mode of all the indoor units connected to the same system for cooling test operation mode, using switches on the interface P.C. board of the header unit. Operation procedure Power ON Be sure to turn on power at the indoor side before power-ON of outdoor unit. Set SW01 on the interface P.C. board of the header unit to [2], Sw02 to [5], and SW03 to [1] respectively. ([C ] is displayed on the 7-segment display [A].
3. Batch start/stop (ON/OFF) function This function is provided to start/stop collectively all the indoor units connected to the same system by using switches on the interface P.C. board of the outdoor unit. Operation procedure Power ON Be sure to turn on power at the indoor side before power-ON of outdoor unit. If an error is already displayed under condition of SW01 [1], SW02 [1], SW03 [1], resolve the problem using the troubleshooting guide and then execute the test operation.
4. Individual start/stop (ON/OFF) individual test operation function This function is provided to start/stop (ON/OFF) individually each indoor unit connected to the same system by using switches on the interface P.C. board of the header unit. Set SW01 [16] and set SW02, SW03 to indoor address No. (1 to 64) to be started (Refer to the following table∗) - only the setup indoor unit starts operation.
8-7-2. Error Clearing Function 1. Clearing from the main remote controller [Error clearing in outdoor unit] Error of the outdoor unit is cleared by the unit of one refrigerant circuit system to which the indoor units operated by the remote controller. (Error of the indoor unit is not cleared.) For clearing errors, the service monitor function of the remote controller is used. 1 2 Change the mode to service monitor mode by pushing seconds or more.
2. Clearing from the interface P.C. board Using the switches on the interface P.C. board, this function is to clear the currently detected error for each refrigerant circuit system without resetting the power supply. (→ Restart of error detection) Errors in both outdoor and indoor units are once cleared. (7-segment display) Set the rotary switches on the interface P.C. board of the header unit to the following setting.
8-7-3. Remote Controller Distinction Function This function is provided to distinguish the remote controller connected from the outdoor unit to the indoor unit for a refrigerant circuit system using switches on the interface P.C. board of the header unit. Distinction procedure Be sure turn on the power of the indoor unit prior to the power of the outdoor unit. Power ON Set the display select switches on the interface P.C.
8-7-4. Pulse Motor Valve (PMV) Forced Open/Close Function in Indoor Unit This function is provided to fully open or close forcibly the PMV for 2 minutes in all indoor units, using the switch operation on the interface P.C. board of the header unit. This function is also used to open the PMV fully when turning off the power and executing an operation, for example, vacuuming. Operation [Open fully] Set the switch SW01 on the interface P.C.
8-7-6. Solenoid Valve Forced Open/Close Function in Outdoor Unit This function is provided to forcibly open/close each solenoid valve mounted in the outdoor unit by use of the switches provided on the outdoor unit interface P.C. board. This function confirms the operation of each solenoid valve. [Operation] 1. On the interface P.C. board set SW01 to [2], SW02 to [1] and SW03 to [3]. 2. Confirm [H, ] is displayed on the 7-segment display [B]. Push switch SW04 for 2 seconds or more. 3.
8-7-7. Fan Operation Check in Outdoor Unit This function is provided to check the fan operation on the interface P.C. board in the outdoor unit. The frequency of the fan speed can be controlled. Therefore utilize this function to check the operation or abnormal sound in the fan system. NOTE) Do not use this function during operation of the compressor. It may damage the compressor. [Operation] 1. 2. 3. 4. Set the switch on the interface P.C. board of the outdoor unit SW01 to [2], SW02 to [1], SW03 to [4].
8-7-8. Abnormal Outdoor Unit Discrimination Method This function is provided to forcedly operate the fan of the outdoor unit in which an error occurred or the fan of the normal outdoor unit by the switch operation on the interface P.C. board in the header unit. To specify which one of the follower units connected to the system was faulty, use this function for the system stop due to a follower unit fault (Check code [E28]).
8-7-9. Manual Adjustment Function of Outside Temp (TO) Sensor This function is provided to fix TO sensor value manually by the switch operation on the interface P.C. board in the outdoor unit. When the unit stops abnormally due to TO sensor failure, etc, an emergent operation is available by set up the value manually to position near the current outside temperature. [Operation] 1. Set the rotary switches on the interface P.C. board to numbers as follows.
8-7-10. Indoor Fan Operation Check Function This function is provided to check operation of single indoor unit without using communication with the remote controller or outdoor unit. This function can be used regardless operating or stopping of the system. However, if this function is used for a long time, a trouble of the air conditioner may be caused. Therefore using of this function should be restricted to several minutes. [Operation] 1. Short-circuit CHK pin (CN71 on the indoor P.C. board).
8-7-12. Monitor Function of Remote Controller Switch When using a remote controller with the model name RBC-ATM21E, the following monitor functions can be used. Calling of display screen [Contents] The temperature or the operation status of the remote controller, indoor unit, or each sensor of the outdoor unit can be known by calling up the service monitor mode from the remote controller. [Procedure] 2 3 4 Push CL + TEST buttons simultaneously for 4 seconds or more to call up the service monitor mode.
9. TROUBLESHOOTING 9-1. Troubleshooting Summary 1. Before troubleshooting 1) Applied models Super Heat Recovery Multi type models (Indoor unit: MMX-APXXX, Outdoor unit: MMY-MAPXXXFT8) 2) Required tools / measuring devices • Screwdrivers (Philips, Flat), spanner, longnose pliers, nipper, push pin for reset switch, etc. • Digital multimeter, thermometer, pressure gauge, etc. 3) Confirmation before check (The following items are not troubles.) No. Operation 1 Compressor does not operate.
9-2. Check Method If an trouble occurs, the error code can be retrieved from the main remote controller/central remote controller (LCD display) or the header unit interface P.C. board (7-segment display). Using this self diagnostic function, the trouble can be identified using the table below. Check code list The following list shows all fault codes. • If check code is from indoor remote controller: See “Main remote controller display” in the list.
Check code Main remote controller display Outdoor 7-segment display Auxiliary code Wireless remote controller Sensor block display of receiving unit AI-NET central control display Operation Timer Ready Flash F01 — — 0F F02 — — 0d ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ F03 — — 93 F04 F04 — 19 F05 F05 — A1 F06 F06 — 18 F07 F07 — 18 F08 F08 — 1b F10 — — OC F12 F12 — A2 F13 F13 01: Comp. 1 side 02: Comp.
Check code Main remote controller display Outdoor 7-segment display Auxiliary code Wireless remote controller Sensor block display of receiving unit AI-NET central control display Operation Timer Ready Flash P01 — — 11 P03 P03 — 1E P04 01: Comp. 1 side P04 02: Comp. 2 side 21 P05 P05 01: Phase-missing detection 02: Phase error AF P07 P07 01: Comp. 1 side 02: Comp.
New check code 1. Difference between the TCC LINK and AI-NET check code The displaying method of the check code changes in this model and onwards. AI-NET check code Used characters Hexadecimal notation, 2 digits Characteristics of code classification Few classification of communication/ incorrect setup system Block display Indoor P.C. board, Outdoor P.C.
9-3. Troubleshooting by Check Display on Remote Controller In case of wired remote controller (RBC-AMT31E) 1. Confirmation and check When a trouble occurs in the air conditioner, the check code and the indoor unit No. are displayed on the of the remote controller. The check code is displayed while the air conditioner operates. If the display has disappeared, operate the air conditioner and check the error based upon the following “Confirmation of error history”. CODE No. UNIT No. R.C. Check code No.
In case of central remote controller (TCB-SC642TLE) ZONE ALL ZONE GROUP CODE No. 1234 SET DATA SETTING R.C. UNIT No. TEST No. GROUP SELECT ZONE CL SET 1. Confirmation and check When a trouble occurred on the air conditioner, the check code and the indoor unit No. are displayed on the display section of the remote controller. The check code is displayed while the air conditioner operates.
In case of AI-NET central remote controller 1. Operation for CHECK display When pushing the CHECK switch, the indoor unit No. (Network address No.) including the check data is displayed in the UNIT No. display section, and the check code is displayed in the set up temp. display section.
9-4. Check Code and Check Position Displayed on the Remote Controller and Outdoor Unit (7-Segment Display of Interface) Check code Detected Outdoor 7-segment display Main AI-NET position remote central control controller Check code remote controller Sub-code Check code name Status Error detection condition Check item (position) • • • • • Check remote controller inter-unit cable (A/B). Check disconnection, connector contact error. Check indoor power supply. Check indoor P.C. board error.
Check code Main Outdoor 7-segment display remote Sub-code controller Check code E12 E12 E15 E15 E16 E16 01: Indoor/outdoor communication 02: Between outdoors communication — 00: Capacity over 01 to: No.
Check code Outdoor 7-segment display Main remote controller Check code Sub-code 01: 02: 03: 04: 05: 06: 07: IPDU1 error IPDU2 error IPDU1, 2 errors Fan IPDU error IPDU1 + Fan IPDU error IPDU2 + Fan IPDU error All IPDU error or communication error between IPDU and I/F P.C. board or outdoor I/F P.C. board error AI-NET central control remote controller Detected position Check code name I/F IPDU communication error Status Error detection condition All stop Communication of each IPDU (P.C.
Check code Outdoor 7-segment display Main remote controller Check code Sub-code F13 F13 F15 F15 F16 01: Compressor 1 side 02: Compressor 2 side Detected AI-NET position central control remote controller IPDU — 18 F16 — F23 F23 F24 Status Error detection condition Check item (position) TH sensor error All stop • Resistance value of sensor is • IGBT built-in temp sensor error infinite or zero (Open/Short). → Exchange IPDU P.C. board.
Check code Outdoor 7-segment display Main remote controller Check code Sub-code H03 H04 H04 H06 H06 01: Compressor 1 side 02: Compressor 2 side Detected position Check code name Status Error detection condition Check item (position) • Check cabling of current detection circuit system. • Check outdoor P.C. board (IPDU) error. 17 IPDU Current detection circuit system error All stop While header compressor stopped, current flowed more than the specified amount.
Check code Outdoor 7-segment display Main remote controller Check code Sub-code H07 H07 — Detected Check code name Status Error detection condition AI-NET position central control remote controller d7 I/F Check item (position) Protection for oil All stop The operating compressor Check all the outdoor units in the corresponding line. level drop detection detected oil shortage • Check full opening of service valve of balance pipe. continuously for 2 hours.
Check code Outdoor 7-segment display Main remote controller Check code Sub-code H16 H16 01: TK1 oil circuit system error 02: TK2 oil circuit system error 03: TK3 oil circuit system error 04: TK4 oil circuit system error Detected AI-NET position central control remote controller d7 I/F Status Error detection condition Oil level detective circuit system error MG-SW error OCR operation All stop Temperature change of TK1 could not be detected after compressor 1 started operation.
Check code Main Outdoor 7-segment display remote controller Check code Sub-code L06 L06 L07 — L08 L08 No. of indoor units with priority Detected AI-NET central control position remote controller Check code name Status Duplicated indoor units with priority (Displayed on the unit other than indoor unit with priority) All stop — 99 Indoor Group line in individual indoor unit. Corresponding At least one indoor unit connected unit only stops. to a group existed in the individual indoor units.
Check code Outdoor 7-segment display Main remote controller Check code Sub-code Detected AI-NET position central control remote controller Check code name Status Error detection condition Check item (position) • Check the lock of fan motor (AC fan). • Check cabling. 132 P01 — — 11 Indoor Indoor fan motor error Corresponding unit only stops. P03 P03 — 1E I/F Discharge temp TD1 error All stop Discharge temp (TD1) exceeded 115°C.
Check code Detected Check code AI-NET Main Outdoor 7-segment display name central control position remote Sub-code remote controller controller Check code Status Error detection condition Check item (position) P07 P07 01: Compressor 1 side 02: Compressor 2 side 1C IPDU I/F Heat sink overheat error All stop IGBT built-in temp sensor (TH) • Check power voltage. was overheated. • Check outdoor fan system error. • Check clogging of heat sink cooling duct. • Check fixation between IGBT and heat sink.
Check code Outdoor 7-segment display Main remote controller Check code Sub-code Detected AI-NET position central control remote controller Check code name Status Error detection condition Check item (position) P17 — bb I/F Discharge All stop Discharge temperature • Check full opening of outdoor service valves (gas side, liquid side). temp TD2 error (TD2) exceeded 115°C. • Check clogging of outdoor PMV (PMV1, 2). • Check characteristics of TD2 sensor resistance value. • Check 4-way valve error.
Check code Outdoor 7-segment display Main remote controller Check code Sub-code P22 P22 0: IGBT shortage 1: Position detection circuit error 3: Motor lock error 4: Motor current error detection C: TH sensor temp. error D: TH sensor error E: Vdc error Detected Check code name AI-NET position central control remote controller 1A FAN-IPDU Outdoor fan IPDU error Status Error detection condition Check item (position) (Sub-code: 0) • Check fan motor.
Error detected by TCC-LINK central control device Check code Outdoor 7-segment display Display on central control device Check code Sub-code AI-NET central control remote controller Detected position TCC-LINK C05 — — C06 — — C12 — — P30 Differs according to error contents of the with alarm Check code name Status Error detection condition Check item (position) TCC-LINK central control Operation Signal is not transmit from • Check central control device error.
Cautions when servicing for compressor 1. Removing wires of both compressors check output of the inverter as described below. How to check inverter output 1. Turn off the power supply. 2. Remove the compressor lead cables from the compressors. (Be sure to remove lead cables of both compressors.) 3. Turn on the power supply and start cooling or heating operation.
9-5. Diagnosis Procedure for Each Check Code Check code name Check code [E01] / [–] Cause of operation Check code Check code name [E03] / [97] Communication error between indoor and remote controller (Detected at indoor side) (TCC-L / AI-NET) Communication error between 1. Remote controller interconnecting cable error indoor and remote controller (Detected at remote controller side) 2. Indoor power supply error (TCC-L / AI-NET) 3. Indoor P.C. board error 4.
Check code name Check code [E06] / [04] Cause of operation Decreased number of indoor units 1. Communication lines (U1, U2) connection error between indoor and outdoor 2. Connector connection error of communication for indoor P.C. board 3. Connector connection error of communication for outdoor I/F P.C. board 4.
Check code Check code name [E08] / [96] Duplicated indoor addresses Cause of operation Indoor addresses are duplicated. (TCC-L / AI-NET) Check code Check code name [E12] / [42] Automatic address start error (TCC-L / AI-NET) Sub-code: Duplicated indoor address Using a main remote controller (RBC-AMT21E), check the setup item codes (DN code) 12, 13, and 14. When there is no address duplication, check to the following flowchart.
Check code Check code name [E16] / [89] Connected indoor units capacity over (TCC-L / AI-NET) Sub-code: 00 : Capacity over Cause of operation 1. There are 48 or more connected indoor units. 2. Capacity over of total connected indoor units. 3. Incorrect setup of indoor/outdoor capacity Check code Check code name Cause of operation [E18] / [97/99] Communication error between indoor header and follower Regular communication between indoor header and follower is unavailable.
Check code Check code name [E20] / [42] Unit connected to other line during automatic address (TCC-L / AI-NET) Cause of operation When starting automatic indoor address, a device in another refrigerant system is connected.
Check code Check code name [E31] / [CF] IPDU communication error Cause of operation (TCC-L / AI-NET) 1. Connection error of communication line between IPDU and I/F P.C. board 2. I/F P.C. board error 3. IPDU P.C. board error 4. External noise Check code Check code name [F01] / [0F] Indoor TCJ sensor error Cause of operation TCJ sensor Open/Short (TCC-L / AI-NET) Is TCJ sensor connector (CN102: Red) on indoor P.C. board normally connected? NO Correct connection.
Check code Check code name [F04] / [19] TD1 sensor error Cause of operation TD1 sensor Open/Short (TCC-L / AI-NET) Check code Check code name [F10] / [0C] Indoor TA sensor error Cause of operation TA sensor Open/Short (TCC-L / AI-NET) This check code means detection of Open/Short of TD1 sensor. Check disconnection of connector (TD1 sensor: CN502, White) and characteristics of sensor resistance value. (Refer to Outdoor unit temperature sensor characteristics.
Check code Check code name [F15] / [18] Outdoor temp sensor miscabling (TE1, TL) (TCC-L / AI-NET) Cause of operation 1. Misinstallation and misconnection of TE1 sensor and TL sensor 2. Resistance characteristics error of TE1 sensor and TL sensor 3. Outdoor P.C. board (I/F) error NO Are installed positions of TE1 sensor and TL sensor correct? Outdoor I/F P.C.
Check code Check code name [F31] / [1C] Outdoor EEPROM error (TCC-L / AI-NET) Is there any trouble of outdoor unit power supply? Cause of operation 1. Outdoor unit power error (Voltage, noise, etc.) 2. Outdoor I/F P.C. board error Check code Check code name [H02] / [1d] Compressor error (Lock) Cause of operation 1. 2. 3. 4. 5. (TCC-L / AI-NET) Check power voltage and line. Correct power line. Check external noise, etc.
Check code Check code name [H04] / [44] Compressor 1 case thermo operation (TCC-L / AI-NET) [H14] / [44] Compressor 2 case thermo operation (TCC-L / AI-NET) Is case thermo circuit normal? 1. Connector connection 2. Wiring 3. I/F P.C. board (Note 1) YES Are service valves of gas pipe and liquid pipe of outdoor unit fully opened? Cause of operation 1. 2. 3. 4. 5. 6. 7. 8. Case thermo circuit error I/F P.C.
Check code Check code name [H07] / [d7] Low oil level protection (TCC-L / AI-NET) Are TK1, TK2, TK3, and TK4 sensors connected correctly? Is sensor fitted correctly or mis-installed. Cause of operation 1. 2. 3. 4. 5. 6. 7. 8. Valves of balance pipes closed.
(*3) Check for solenoid valve of outdoor unit (for multiple outdoor unit system) a) Clogging check for SV3A valve • While outdoor unit is operating, set up SW01/02/03 = [2] [1] [3] to 7-segment display [Hr], and push SW04 for 2 seconds or more, [Hr] [2] is displayed. • Set up SW02 = [4], and turn on SV3A valve (7-segment display [Hr] [ 3A]). • If temperature is low at secondary side of the valve or it does not change, clogging of valve or check valve is considered (1 in the figure).
Check code Check code name Cause of operation Check code Check code name Cause of operation [H16] / [d7] TK2 detective circuit system error (Sub-code: 02) 1. Connection of TK2 sensor. 2. Error in resistance value of TK2 sensor (see 9-7 Sensor characteristics). 3. Oil-equalization circuit error (check valve, capillary clogging, strainer clogging). 4. Refrigerant stagnation in case of compressor shell. [H16] / [d7] TK3 temperature detective circuit error (Sub-code: 03) 1. Connection of TK3 sensor.
Check code Check code name Cause of operation Check code Check code name Cause of operation [H16] / [d7] TK4 temperature detective circuit error (Sub-code: 04) 1. Connection of TK4 sensor. 2. Error in resistance value of TK4 sensor (see 9-7 Sensor characteristics). 3. Check clogging and malfunction of SV3E valve circuit. 4. Oil-equalization circuit error (check capillary clogging, strainer clogging). 5. Refrigerant stagnation in case of compressor shell.
Check code Check code name [L07] / [99] Group line in individual indoor unit (TCC-L / AI-NET) Is there group wiring? YES Cause of operation The group line is connected in the individual indoor unit. Item code (D1) 12: Line address Item code (D2) 13: Indoor address Item code (D3) 14: Group address Check setup item code DN 12, 13, and 14 addresses.
Check code Check code name Cause of operation Check code Check code name [L18] / [8A] Flow selector unit system error An indoor unit which has been operated in cooling only mode is operated in heating mode without setup for cooling only mode. [L29] / [CF] IPDU quantity error (TCC-L / AI-NET) NO Is every indoor unit been set up for cooling only mode? Set up All cooling mode. Item code (DN)=OF Cooling only operation mode=0001 YES Check flow selector unit.
Check code Check code name [L30] / [b6] Interlock in indoor unit from outside (TCC-L / AI-NET) Is outside device connected to connector CN80? Cause of operation Outside error was input. Check code Check code name [P03] / [1E] Discharge temp TD1 error (TCC-L / AI-NET) NO Check indoor P.C. board. Replace Failure NO Check outside device. Failure Replace YES Does outside device correctly operate? Cause of operation 1. Service valve of outdoor unit closed. 2. Outdoor PMV1, 2 error 3.
Check code Check code name [P04] / [21] Actuation of high-pressure SW (TCC-L / AI-NET) Cause of operation Sub-code: 01: Compressor 1 side 02: Compressor 2 side NO Is SV4 circuit normal? All heating operation Refrigerant overcharge, clogging,pipe breakage, abnormal overload condition YES NO Is indoor PMV normal? YES YES Check and correct cabling. YES ® Check I/F P.C. board. Failure Replace NO Is connector connection, coil normal? NO YES Repair faulty parts.
Check code Check code name [P07] / [1C] Heat sink overheat error Cause of operation (TCC-L / AI-NET) 1. 2. 3. 4. 5. Power voltage error Outdoor fan system error Heat sink installation error Clogging of hear sink cooling duct IPDU P.C. board error (TH sensor error) Check code Check code name [P12] / [11] Indoor fan motor error (TCC-L / AI-NET) Turn off power supply. Sub-code: 01: Compressor 1 side 02: Compressor 2 side NO Is power voltage normal?* Correct power line.
Check code name Check code [P13] / [47] Cause of operation Outdoor liquid back detection error 1. PMV1/PMV2 error (TCC-L / AI-NET) 2. 3. 4. 5. 6. Are connections of outdoor PMV1/PMV2 connectors correct? NO Pd sensor, Ps sensor error Clogging of SV2 circuit Clogging of SV3B circuit, balance pipe Leakage on main discharge pipe Outdoor I/F P.C. board error Correct connector connection.
Check code Check code name [P15] / [AE] Gas leak detection TD condition (Sub-code: 02) (TCC-L / AI-NET) Are service valves on gas and the liquid sides fully opened? 1. 2. 3. 4. 5. Cause of operation Check code Check code name Cause of operation Outdoor unit service valve closed Outdoor PMV error TD sensor error SV4 circuit error Refrigerant shortage, clogging refrigerant circuit [P17] / [bb] Discharge temp TD2 error 1. Outdoor unit service valve closed 2. Outdoor PMV error 3.
Check code Check code name [P19] / [08] 4-way valve operation error Cause of operation (TCC-L / AI-NET) 1. 2. 3. 4. 4-way valve error TS1 sensor/TE1 sensor error Pd sensor/Ps sensor error TE sensor/TL sensor misconnection Check code Check code name [P20] / [22] High-pressure protective operation Cause of operation (TCC-L / AI-NET) Sub-code: Detected outdoor unit No. NO Is 4-way valve coil connector connected? Correct connector connection.
C Check code Check code name [P22] / [1A] Outdoor fan IPDU error (TCC-L / AI-NET) All heating operation Is connector connection of indoor heat exchanger fan or fan motor normal? NO Does heating indoor fan normally operate? YES Sub-code: YES NO Repair faulty parts. 0 ∗ : IGBT short circuit 3 ∗ : Motor lock error C∗ : TH sensor error (Heat sink overheat) E ∗ : Vdc error YES NO Are characteristics of sensor TC2 and TCJ resistance normal? YES Are wire connections on the fan IPDU and the power P.
Check code Check code name [P26] / [14] G-Tr short-circuit protection error (TCC-L / AI-NET) Cause of operation 1. 2. 3. 4. Outdoor unit power error IPDU error/Cable connection error Compressor error IPDU P.C. board error Check code Check code name [P29] / [16] Compressor position detective circuit error (TCC-L / AI-NET) Cause of operation 1. Wire connection error. 2. Compressor error 3. IPDU P.C.
Check code Check code name [–] / [97] AI-NET communication line error Cause of operation AI-NET communication line error (TCC-L / AI-NET) Are AI-NET X and Y communication lines normal? NO Correct communication line. YES Are connections of CN01, CN02, and CN03 connectors on network adaptor P.C. board (MCC-1401) and CN309 and CN41 connectors on indoor P.C. board normal? NO Correct connection of connectors.
9-6. 7-Segment Display Function n 7-segment display on the outdoor unit (Interface P.C. board) On the interface control P.C. board, a 7-segment LED is provided to check the operating status. The displayed contents are changed by combining the setup numbers of the rotary switches (SW01, SW02 and SW03) on the I/F P.C. board. Interface P.C. board SW06 7-segment display A 7-segment display B SW06 SW07 SW08 SW09 D600 3rd. place 2nd. place SW05 CN32 SW04 D601 D602 D603 D600 1st.
1. Data display of system information (Displayed on the header outdoor unit only) SW01 SW02 SW03 1 1 2 3 4 5 6 7 8 9 3 Display contents Refrigerant name System capacity No. of outdoor units No. of connected indoor units/ No. of units with cooling thermo ON No. of connected indoor units/ No. of units with heating thermo ON Compressor command correction amount Release control Oil-equalization control Oil-equalization request Displays refrigerant name.
2. Data display of outdoor unit information (Displayed on each outdoor unit) SW01 SW02 SW03 1 1 1 Display contents Error data A Displays outdoor unit number: [U1] to [U4] B Displays check code (Latest code only is displayed.) There is no check code: [– – –] There is sub-code: Check code [∗ ∗ ∗] for 3 seconds, sub-code [– ∗ ∗] for 1 second alternately push function : Fan of unit with error only drives. 7-segment A: [E1] push function : Fan of normal unit only drives.
3. Data display of outdoor cycle (Displayed on each outdoor unit) SW01 SW02 SW03 1 1 2 Display contents Pd pressure data Pd pressure (MPaG) is displayed with decimal data. (MPaG: Approx. 1/10 value of kg/cm2G data) 2 Ps pressure data 3 PL pressure conversion data Estimated pressure of liquid line (MPaG) is displayed with decimal data. 4 TD1 sensor data 5 Ps pressure (MPaG) is displayed with decimal data. TD2 sensor data 7 8 TS1 sensor data B ∗. ∗ ∗ P S. ∗. ∗ ∗ P L. ∗.
5. Outdoor EEPROM check code display (Displayed on the header unit only) ∗ The latest check code written in EEPROM on each outdoor unit is displayed. (It is used when confirming the check code after power supply has been reset.) Set SW01 to 03 as shown in the following table and the push SW04 for 5 seconds or more to display an check code. W01 1 SW02 SW03 1 16 7-segment display Display contents A B The latest check code of the header unit 1 (U1) E. r 1.
n Pressure sensor characteristics • I/O cable connection table High pressure side (Pd) Pin No. Low pressure side (Ps) Input/Output name Lead wire color Input/Output name Lead wire color 1 OUTPUT White — — 2 — — OUTPUT White 3 GND Black GND Black 4 +5V Red +5V Red • Output voltage — Pressure High pressure side (Pd) Low pressure side (Ps) 0.5 to 3.9 V DC 0.5 to 3.5 V DC 0 to 3.33 MPa 0 to 0.98 MPa 5 Output at low pressure side (V) Output at high pressure side (V) 5 3.9 0.
9-8. Pressure Sensor Output Check 9-8-1. Outdoor Unit n Pd sensor characteristics 0 to 4.41MPa (0.5 to 5V output with 0 to 4.41MPa) Voltage check between CN501 and pins on the outdoor unit I/F P.C. board (Tester Pd Pd VOLT (MPa) (kg/cm²) 0.00 0.00 0.0 0.02 0.00 0.0 0.04 0.00 0.0 0.06 0.00 0.0 0.08 0.00 0.0 0.10 0.00 0.0 0.12 0.00 0.0 0.14 0.00 0.0 0.16 0.00 0.0 0.18 0.00 0.0 0.20 0.00 0.0 0.22 0.00 0.0 0.23 0.00 0.0 0.25 0.00 0.0 0.27 0.00 0.0 0.29 0.00 0.0 0.31 0.00 0.0 0.33 0.00 0.0 0.35 0.00 0.0 0.
n Ps sensor characteristics 0 to 1.48MPa (0.5 to 5V output with 0 to 1.48MPa) Voltage check between CN500 and pins on the outdoor unit I/F P.C. board (Tester Ps Ps VOLT (MPa) (kg/cm²) 0.00 0.00 0.0 0.02 0.00 0.0 0.04 0.00 0.0 0.06 0.00 0.0 0.08 0.00 0.0 0.10 0.00 0.0 0.12 0.00 0.0 0.14 0.00 0.0 0.16 0.00 0.0 0.18 0.00 0.0 0.20 0.00 0.0 0.22 0.00 0.0 0.23 0.00 0.0 0.25 0.00 0.0 0.27 0.00 0.0 0.29 0.00 0.0 0.31 0.00 0.0 0.33 0.00 0.0 0.35 0.00 0.0 0.37 0.00 0.0 0.39 0.00 0.0 0.41 0.00 0.0 0.43 0.00 0.0 0.
9-8-2. Flow Selector Unit (FS Unit) Leakage of SVD valve or SVS valve, etc; Positions to be checked and check code when a trouble such as miswiring occurred.
Phenomenon which appears as result (Corresponding indoor unit or flow selector unit) Part name Trouble mode Clogging SVSS valve Leakage Operation mode Correspon ding indoor unit Judgment and position to be checked l Indoor unit, • Operation is changed from heating to cooling. Single heating Simultaneous cooling (Indoor heating) Simultaneous heating (Indoor heating) ¡ l Indoor unit, • Refrigerant impact sound is heard at defrost time.
Suction gas pipe Suction gas pipe Discharge gas pipe Discharge gas pipe Discharge gas pipe Liquid pipe Liquid pipe Liquid pipe SVS SVDD SVD SVS SVDD SVD SVS SVDD SVD SVSS SVSS SVSS 173 PMV PMV TC1 TC2 TCJ PMV TC1 TC2 TCJ TCJ A • SV11 ON • SVD leakage • SVS ON TC1 TC2 B • SVD ON • SV11 ON C • SVS ON Reference Refrigerant circulating example of flow selector unit when a trouble occurred Suction gas pipe
CPU Key switch Remote controller communication circuit Indoor unit #1 A 174 Central control X remote controller (Option) Y (In case of AI-NETWORK) AI-NET communication circuit Key switch DC5V Power circuit B Power circuit #2 Secondary battery A B #3 A B Max. 8 units are connectable. *1 Indoor control P.C.
Weekly timer Display LCD Display LCD Display LED Function setup CPU Key switch Remote controller communication circuit Indoor unit #1 A 175 (In case of AI-NETWORK) Key switch DC5V Power circuit B Power circuit #2 Secondary battery A B #3 A B Max. 8 units are connectable. *1 Indoor control P.C.
B Wireless remote controller kit Sensor P.C. board Network Remote adaptor controller P.C. board communication (MCC-1401) circuit Central control X remote controller (Option) Y (In case of AI-NETWORK) AI-NET communication circuit Indoor control P.C.
A B #2 Network adaptor (Option) Network Remote adaptor controller P.C. board communication (MCC-1401) circuit Central control X remote controller (Option) Y (In case of AI-NETWORK) AI-NET communication circuit B #3 A B Indoor control P.C.
Display LCD Display LCD Display LED LCD driver Function setup CPU Key switch CPU CN2 Remote controller communication circuit Indoor unit #1 A CN1 Key switch DC5V *3 DC5V Power circuit Power circuit Secondary battery B Wireless remote controller kit Sensor P.C. board Network adaptor (Option) Network Remote adaptor controller P.C.
Weekly timer Display LCD Display LCD Display LED LCD driver Function setup CPU Key switch Remote controller communication circuit Indoor unit #1 A Function setup CPU CN2 CN1 Key switch DC5V *3 DC5V Power circuit Power circuit Secondary battery B #2 Network adaptor (Option) Network Remote adaptor controller P.C. board communication (MCC-1401) circuit 179 Central control X remote controller (Option) Y (In case of AI-NETWORK) AI-NET communication circuit B #3 A B Indoor control P.
EEPROM DC fan output Power supply Optional power supply PMV output 180 Remote controller power supply LED DC fan return *1 Drain pump output *1 Float SW Fan output HA (T10) TA sensor Optional output Flap (Used only for 4-way Air Discharge Cassette Type,Under ceiling type) TCJ sensor EXCT DISP Used for CHK servicing Remote controller inter-unit cable TC1 sensor Indoor/Outdoor communication (Also used for communication of the central control system) TC2 sensor *1 Indoor/Outdoor communication (Spar
Indoor/Outdoor communication (Spare) PMV output Microcomputer operation LED Indoor/Outdoor communication (Also used for communication of the central control system) EEPROM Power transformer (Primary side) (AC200V) *1 Flap Remote controller power supply LED HA (T10) 181 Optional output Remote controller inter-unit wire Drain pump output Optional power supply EXCT AC fan output TA sensor TCI sensor Outside error input TC2 sensor Filter/Option error input DISP Used for CHK servicing TCJ sensor
MCC-1520 2-way Air Discharge Cassette Type, 1-way Air Discharge Cassette Type (1 Series), Concealed Duct High Static Pressure Type, Floor Standing Cabinet Type, Floor Standing Concealed Type, Floor Standing Type C03 + CN01 1 C90 IC01 + CN02 6 + IGO GND 1 + +15V 6 MCC-1520-01 COMPONENT SIDE Power supply trans side (Input) Control P.C. board side (Output) 10-1-3. Flow Selector Unit P.C.
10-1-4. Optional Connector Specifications of Indoor P.C. Board Function Humidifier output Fan output — Connector No. Pin No. CN66 DC12V Output DC12V Output ON/OFF input 0V (COM) Operation output CN32 CN61 Remarks Specifications In heating, thermo ON, Fan ON, Humidifier output ON * Humidifier provided, Drain pump ON is set up by CN70 short-circuit or from remote controller. (DN=40) Shipment setup: ON with indoor unit operation and OFF with stop are linked.
10-2. Outdoor unit Positions to be checked on the interface P.C.
Inverter P.C. board (MCC-1502) [IPDU1, IPDU2] Compressor output Power supply input (AC400V) +12V GND Input current sensor (T02) +5V Communication between I/F and Comp. IPDU Reactor 2 (IPDU2 only is connected.) AC230V input DC330V output (IPDU1 only is connected.) DC330V input Electrolytic condenser (+, -) Connection between IPDU1 and 2 Reactor 1 (IPDU1 only is connected.
Power supply P.C. board for fan (MCC-1439) Communication between I/F and fan IPDU +12V AC230V input GND Judgement +12V terminal 1 – 5 +7V terminal 2 – 5 Communication between fan IPDU ( ) +7V output DC330V output (For Comp.
10-2-1. Outdoor Interface P.C.
11. BACKUP OPERATIONS (EMERGENCY OPERATION) When a trouble occurs in an outdoor unit or in one of the compressors in an outdoor unit, the malfunctioning unit or compressor stops and a backup operation (emergency operation) is available through the other functioning outdoor units and compressors. A backup operation can be set up following the procedure below. 11-1. Before Backup Operation The method of the backup operation will differ depending on the type of trouble. Refer to the following table.
11-3. Backup Setup for Outdoor Unit Outline In this model, setup of the backup operation is available in either the header unit or the follower unit in a situation where the outdoor units are defective. In a system in which two or more outdoor units are connected, carry out the backup operation on the outdoor unit if the error modes described below occur. • Compressor error (Rare short error or when one compressor cannot operate, etc.
12. OIL LEVEL JUDGMENT DISPLAY The judgment result of the current oil level of the compressor can be confirmed by the switch setup on the interface P.C. board on the outdoor unit. Confirm the result using the following procedure. 1. Operation procedure Interface P.C. board on the outdoor unit which displays oil level judgment 1) Operation starts. 3) Result of oil level judgment is displayed. 2) Set SW01/SW02/SW03 to 1/16/1. 4) After confirmation, return SW01/SW02/SW03 to 1/1/1. 1) Start the operation.
13. REFRIGERANT RECOVERY WHEN REPLACING THE COMPRESSOR 13-1. Refrigerant Recovery in the Malfunctioning Outdoor Unit A pump-down function is available in this system. For multiple outdoor unit systems, execute pump-down by using the normal outdoor units and the refrigerant can be recovered from the outdoor unit, which is to be repaired. 13-1-1. Before Refrigerant Recovery Operation Pay attention to the following items during pump-down operation. 1.
6. Fully close the service valve in the gas pipe of the malfunctioning outdoor unit approximately 10 minutes after the system has started. 7. Push SW04 of the malfunctioning outdoor unit, to display the pressure data (MPa). For each successive push of SW04, the data display changes as shown in the example below. Display Example [rd] [ 11] Initial display [Pd] [1.20] High pressure [Ps] [1.20] Low pressure [Select an outdoor unit for pressure adjustment as follows] 8.
(Refrigerant recovery procedure (backup)) If the power of the malfunctioning unit cannot be turned on, the PMV cannot be opened, therefore the amount of recovered refrigerant decreases compared with the usual pump down operation. Using a refrigerant recovery device, recover the remaining gas in the unit and measure the recovered refrigerant, as the same amount of refrigerant will be required to be recharged after the repair. Procedure [Set up the malfunctioning outdoor unit as follows] 1.
[Setup for header unit] 9. The low pressure (Ps) data is displayed on the 7-segment display. Slowly close the service valve of the gas pipe and adjust so that a pressure of 0.12 MPa is displayed. 10. When the manifold gauge pressure of the malfunctioning outdoor unit is almost the same as that of the header unit in which the pressure adjustment has been made, fully close the service valve of the gas pipe in the header unit. [Set up the malfunctioning outdoor unit as follows] 11.
13-2. How to Operate the System During Repair of the Malfunctioning Outdoor Unit Procedure 1. Follow the aforementioned “13-1. Refrigerant Recovery in the Malfunctioning Outdoor Unit”. 2. Recover the refrigerant in the system by using a recovery device. The refrigerant amount to be recovered is determined based upon the capacity of the malfunctioning outdoor unit (see the following table). Example) In a case of backup for 10 hp-outdoor unit in 30 hp system: in the original system hp (30 hp system) = 37.
13-3. Process after Repair After completion of the repair work, perform vacuuming of the outdoor unit using the following procedure. Procedure 1. Short CN30 on the interface P.C. board on the outdoor unit for which the repair work has been completed, to open the PMV fully. (Confirm that Bit 1 of SW12 is OFF.) Note) The PMV opening by using short CN30 returns the PMV to fully closed after 2 minutes.
14. LEAKAGE/CLOGGING OF OIL-EQUALIZATION CIRCUIT Check code list for leakage, clogging of outdoor refrigerant circuit and oil circuit parts Trouble by clogging Position with trouble (See next page.) Unit issuing check code Outdoor PMV A Corresponding unit High-pressure protective operation Low-pressure protective operation Discharge temp.
Propeller fan FM Sensor (TE1) Strainer Fan motor (Right side) Sensor (TO) Main heat exchanger Pulse motor valve (Left side) Solenoid valve (SV12) Main heat exchanger (PMV2) Strainer A Strainer Check valve Auxiliary heat exchanger (Right side) Auxiliary heat exchanger (Left side) (PMV3) 4-Way valve Check valve Solenoid valve (SV11) Solenoid valve (SV5) High-pressure sensor H Solenoid Capillary Check joint tube valve (SV6) Capillary tube Strainer Sensor (TL) Solenoid valve (SV3D) K Highpr
15. REPLACING COMPRESSOR 15-1. Compressor Replacing Procedure (Outline) WARNING Never recover the refrigerant into outdoor unit. Be sure to use a refrigerant recovery device for refrigerant recovery for reinstallation or repair work. Recovery into the outdoor unit is unavailable; otherwise a serious accident such as rupture or ingury could occur. START NOTE) Full opening operation of PMV by CN30 short-circuiting rwill return to fully closed after 2 minutes have passed.
15-2. Replacing Compressor Exchanging a compressor When changing the compressor, extract oil from the defective compressor and based on the quality of the oil, make the decision of whether to change one or both compressors. If oil colour ASTM is 4.0 or more, both compressors should be replaced. CAUTION The compressor can weigh in excess of 20kg. One person should not attempt to lift it alone. M5 screws (2 positions) Removal of defective compressor • • • • Turn off the power supply to the defective unit.
Color check of oil in the defective compressor • Lay the defective compressor down, extract a little oil from the oil-equalization pipe and then check the oil colour based on the oil colour sample.
When replacing both the defective and normal compressors Removal of normal compressor • Remove the normal compressor in the same way as the defective compressor. Note) • Be sure to apply insulation to the removed cable terminals with insulating tape, etc. WARNING Be aware that if oil is present when brazing, a fire eruption could occur.
Installation of compressor • Install the compressor in the reverse procedure of removal. • When removing the compressor, the terminals may become loose. If this happens crimp them with pliers and then check there are no looseness. Note) • Only two hexagonal bolts are provided to fix the compressor. • The tightening torque of the hexagonal bolt to fix the compressor is 200kg/cm. • If oil has been extracted from the accumulator, braze the cutoff pipe after pinching.
15-3.
Propeller fan FM Fan motor Sensor (TE1) Strainer (Right side) Sensor (TO) Main heat exchanger Pulse motor valve (Left side) Solenoid valve (SV12) Strainer A Strainer Check valve Auxiliary heat exchanger (Right side) Auxiliary heat exchanger (Left side) (PMV3) 4-Way valve Check valve Solenoid valve (SV11) Solenoid valve (SV5) Capillary tube Check valve High-pressure sensor Solenoid Capillary Check joint tube valve (SV6) Capillary tube Strainer Sensor (TL) Solenoid valve (SV3D) Nitrogen pressu
16. REPLACING PROCEDURE OF PARTS No. 1 Part to be exchanged Work procedure Cabinet Remarks Discharge cabinet REQUIREMENT Wear protective clothing on your hands as other components may cause and injury etc. 2) Disassembling 1) Stop the unit operation and turn off the power supply to the unit. Screws (4 corners) 2) Remove the screws on the discharge cabinet. (M5 × 16, 4 pcs.) 3) Remove the screws (Front/rear at lower side) on the cabinet. (M5 × 10, 7 pcs.
No. 2 Part to be exchanged Propeller fan motor Work procedure Remarks 3) Remove the flange nut fixing on the fan motor and propeller fan. (To tighten the nut, turn it clockwise.) 3) Flange nut 4) Remove the square washer. 5) Remove the propeller fan. NOTE Gently pull the straight upwards. 4) Square washer washer 6) Remove the connectors (3 positions) from IPDU P.C. board on the inverter fan and then pull out the fan motor lead upwards. 7) Remove the fixing screws (4 pcs.) on the fan motor.
No. 3 Part to be exchanged Heat exchanger Work procedure Remarks REQUIREMENT 2) Motor base Wear protective clothing on your hands as other components may cause and injury etc. Before beginning the procedure, ensure the refrigerant has been reclaimed from the outdoor unit, using a suitable refrigerant recovery device. Heat exchanger exchanger (Left) Heat exchanger exchanger (Right) 3) Motor base bracket M Disassembling (Example): Heat exchanger (Right) 5) Support 1) Remove the cabinet.
No. 4 Part to be exchanged HeInverter assembly M Removal of box Work procedure Remarks REQUIREMENT Wear protective clothing on your hands as other components may cause and injury etc. 3 Screw 3) Scre 1) Stop the unit operation and turn off the power supply to the unit. 2) Remove the inverter cover. (M4 × 10, 2 pcs.) 3 3) Screw Scre 4) Fixing claw cla 3) Remove the fixing screws on the box. (1 pc. each at upper and lower sides.
No. 5 Part to be exchanged Inverter assembly M Removal of P.C. board and electric parts 1. Noise filter P.C. board 2. Interface P.C. board Remarks Work procedure REQUIREMENT Wear protective clothing on your hands as other components may cause and injury etc. 4. IPDU P.C. board for fan 1. Noise filter P.C. boards 2. Interface P.C. board (Control P.C. board) 1) Stop the unit operation and turn off the power supply to the unit. 2) Remove the cables and then the P.C.
No. 5 Part to be exchanged Inverter assembly M Removal of P.C. board and electric parts Remarks Work procedure REQUIREMENT Wear protective clothing on your hands as other components may cause and injury etc. 5. Reactor 6. Transformer 1) Stop operation, and then turn the power supply to the unit. 7. Electrolytic capacitor 2) Take off the screws (3 positions) on the terminal block installation board. 3) Take off the fixing screws on each part and then remove the cables.
No.
No.
No. 8 Part to be exchanged Attachment/ detachment of pipe fixing rubber Work procedure REQUIREMENT Remarks 1) Wear protective clothing on your hands as other components may cause and injury etc. Disassembling 1) Squeeze the band either side of the clip to release. Compress the rubber to release the cup. 1) 2) Pushing in the tab side of SUS band the tab comes off from square hole. Push in the band towards the arrow mark. Assembly Align the direction of the slits and then attach to each pipe.
No. 9 Part to be exchanged Exchange of accumulator Work procedure Remarks REQUIREMENT Wear protective clothing on your hands as other components may cause and injury etc. Before beginning the procedure, ensure the refrigerant has been reclaimed from the outdoor unit, using a suitable refrigerant recovery device. 1) Remove the lower cabinet (rear side). 2) Remove the fixing screws (M6 × 3 pcs.) from the accumulator leg ⇔ base board.
No. 10 Part to be exchanged Work procedure Exchange of 4-way valve Remarks REQUIREMENT Wear protective clothing on your hands as other components may cause and injury etc. Before beginning the procedure, ensure the refrigerant has been reclaimed from the outdoor unit, using a suitable refrigerant recovery device. 1) Remove the lower cabinet (Front side). 2) Remove the inverter box according to the item “How to remove the inverter box”. 3) Remove the brazed sections on PMV assembly at 3 positions.
17. P.C. BOARD 17-1. Indoor Unit 17-1-1. Exchange of P.C. Board for Indoor Service Part code P.C. board model Label display on P.C.
Method 2 Before exchange, it is impossible to read out the setup contents due to EEPROM error. Exchange of P.C.
Procedure 2 : Exchange of P.C. board for service 1. Exchange P.C. board with a P.C. board for service. In this time, the jumper line (cut) setup or the (short-circuit) connecting connector setup on the previous P.C. board should be reflected on P.C. board for service. (See the blow figures.) (MCC-1402) JP1 (MCC-1403) CN41 CN34 JP001 CN041 CN030 From the left CN112,111,110 When short-circuited plug is mounted to P.C. board before change, re-mount the short-circuited plug as previons. 2.
Procedure 3 : Writing-in of setup contents to EEPROM (The EEPROM contents which are installed on the service P.C. board have been set up at shipment from the factory.) 1 1. Push SET + CL + TEST buttons simultaneously for 4 seconds or more. (Corresponds to number of the operation diagram of the remote controller in page 218.) ( is displayed in the UNIT No box.) In this time, is displayed in the item code (DN). The fan of the indoor unit operates, and also starts swinging in a model with flap. 2.
Record the contents of the following before exchanging P.C. boards. (Item code list) DN Item Memo Setup at shipment from factory 01 Filter sign lighting time According to type 02 Dirty condition of filter 0000: Standard 03 Central control address 0099: Undefined 06 Heating inlet temp.
17-2. Outdoor Unit 17-2-1. Cautions in Service for Compressor 1. When checking the inverter output, remove the both wires of the compressor as follows. 17-2-2. How to Check Inverter Output 1. Turn off the power supply. 2. Remove the compressor lead from the compressor. (Be sure to remove lead wires of both compressors.) 3. Turn on the power supply and drive the air conditioner in cool or heat mode.
17-2-4. How to Check Fan Power Supply P.C. Board and Fan IPDU The fan power supply P.C. board supplies DC power. It supplies DC280V for the fan IPDU, and DC12V and DC7V for the control power supply respectively. If the control power is not supplied, a communication error (Error code [E31]) is out. 1. How to check fan power supply P.C. board (MCC-1439) As shown in the following table, measure the voltage of the check positions with a digital tester. No.
17-2-5. Interface Board Replacement Procedure This service board is commonly installed in different models. If the board assembly is to be replaced, check the displayed inspection contents and replace the board with the correct version for the model and follow this procedure. Replacement steps 1. 2. 3. 4. Turn off the power supply of the outdoor unit. Remove the connectors, fasteners and screw terminals connected to the interface P.C. board. Remove the interface P.C. board from the six card edge spacers.
17-2-6. Comp-IPDU Board Replacement Procedure Manual This service board is commonly installed in different models. If the board assembly is to be replaced, replace it properly in with the correct version for the model and follow this procedure. Replacement steps 1. 2. 3. 4. 5. 6. Turn off the power supply to the outdoor unit. Confirm that the capacitor has been fully discharged (confirm that the voltage between CN13 and CN15 is 0 V).
17-2-7. Notice for Wiring Wiring for service shall be done according to the wiring diagram. Special caution is needed for the reactor, which has different connecting points on the COMP-IPDU1 and COMP-IPDU2. COMP-IPDU No.1 COMP-IPDU No.2 TO REACTOR 1 TO REACTOR 2 CN20 (REACTOR 1) CN21 (REACTOR 1) CN08 (REACTOR 2) CN07 (REACTOR 2) P.C. board noise P.C. filter board P.C. board interface power P.C. board P.C. board Comp-IPDU Comp-IPDU No.1 No.
Inverter Assembly Configuration Fan IPDU Power supply P.C. board for fan BUS terminal block Relay connector IPDU1 Magnet swith IPDU2 Noise filter Interface P.C.
TOSHIBA CARRIER CORPORATION 2 CHOME 12-32, KONAN, MINATOKU, TOKYO, 108-0075, JAPAN Copyright © 2005 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved.