Order No. MAC0308013C2 Room Air Conditioner CS-E18CKE CU-E18CKE CS-E21CKE CU-E21CKE CONTENTS Page 1 Features 2 2 Functions 3 3 Product Specifications 6 Page 10.4. INSTALLATION, TRANSFERRING, SERVICING 11 Installation Instructions 59 63 11.1. Safety Precautions 63 11.2. INDOOR UNIT 66 11.3. OUTDOOR UNIT 69 4 Dimensions 10 5 Refrigeration Cycle Diagram 12 6 Block Diagram 13 12 Servicing Information 72 7 Wiring Diagram 14 12.1. Troubleshooting 72 8 Operation Details 15 12.2.
15 Replacement Parts List 85 16 Exploded View 86 17 Replacement Parts List 87 18 Electronic Circuit Diagram 88 18.1. REMOTE CONTROL 98 18.2. PRINT PATTERNINDOOR UNIT PRINTED CIRCUIT BOARD 99 18.3.
2 Functions Remote Control Illuminable buttons OFF/ON I FAN SPEED Operation OFF / ON Indoor Fan Speed Selection • • • • • • MODE Operation Mode Selection • • • • • a HEAT COOL DRY FAN Automatic Operation Heating Operation Cooling Operation Soft Dry Operation Fan Operation AUTO FAN Low MediumMedium Medium+ High Automatic Fan Speed TEMP Room Temperature Setting TIMER ON POWERFUL Powerful Mode Operation OFF • Increase or decrease set temperature.
Indoor Unit Five Operation Modes Automatic Operation Switch • Press for < 5s to run Automatic Operation. (Used when the remote control cannot be used.) • Press continuously for 5s and < 8s to run Forced Cooling Operation. • Press continuously for 8s and < 11s to run Forced Heating Operation. • Press continuously for 11s and < 16s to change different remote controlling setting (4 type of transmission code).
Outdoor Unit Time Delay Safety Control Breakdown Self Diagnosis Function 30 seconds Forced Operation Low Pressure Control (Gas Leakeage Detection) Overload Protection Control Indoor Power Relay Control Total Running Current Control Anti-Dew Formation Control Compressor Overheating Prevention Control Anti Freezing Control IPM (Power Transistor) Overheating Protection Control Anti-Cold Draft Control Low Operation Frequency Protection Control Hot Start Mininum Operation Frequency Protection Contro
3 Product Specifications Unit CS-E18CKE CU-E18CKE Cooling Capacity kW kcal/h BTU/h 5.30 (0.90 - 6.00) 4,560 (770 - 5,160) 18,100 (3,070 - 20,500) Heating Capacity kW kcal/h BTU/h 6.60 (0.90 - 8.00) 5,680 (770 - 6,880) 22,500 (3,070 - 27,300) Moisture Removal l/h Pint/h 2.9 (6.1) Power Source Phase V Cycle Single 230 50 Airflow Method OUTLET SIDE VIEW TOP VIEW INTAKE Air Volume Indoor Air (Lo) m3/min (cfm) Cooling; 12.5 (440) Heating; 13.
Pipe Size (Flare piping) Drain Hose Power Cord Length Number of core-wire Dimensions Inner diameter Length Height Width Depth Net Weight Compressor Motor Rated Air Circulation Motor Fan Speed Heat Exchanger Unit inch inch mm m inch (mm) inch (mm) inch (mm) lb (kg) Type Type Output Type Material Type Rate Output Lo (Cool/Heat) Me (Cool/Heat) Hi (Cool/Heat) W W rpm rpm rpm Description Tube material Fin material Fin Type Row / Stage FPI Size (W × H × L) Refrigerant Control Device Refrigeration Oil Re
Unit CS-E21CKE CU-E21CKE Cooling Capacity kW kcal/h BTU/h 6.30 (0.90 - 7.10) 5,420 (770 - 6,110) 21,500 (3,070 - 24,200) Heating Capacity kW kcal/h BTU/h 7.20 (0.90 - 8.50) 6,190 (770 - 7,310) 24,600 (3,070 - 29,000) Moisture Removal l/h Pint/h 3.5 (7.4) Power Source Phase V Cycle Single 230 50 Airflow Method OUTLET SIDE VIEW TOP VIEW INTAKE Air Volume Indoor Air (Lo) m3/min (cfm) Cooling; 12.6 (440) Heating; 14.0 (490) — Indoor Air (Me) m3/min (cfm) Cooling; 14.
Drain Hose Power Cord Length Number of core-wire Dimensions Height Width Depth Net Weight Compressor Motor Rated Air Circulation Motor Fan Speed Heat Exchanger Unit mm m Inner diameter Length inch (mm) inch (mm) inch (mm) lb (kg) Type Type Output Type Material Type Rate Output Lo (Cool/Heat) Me (Cool/Heat) Hi (Cool/Heat) W W rpm rpm rpm Description Tube material Fin material Fin Type Row / Stage FPI Size (W × H × L) Refrigerant Control Device Refrigeration Oil Refrigerant (R410A) Thermostat Protec
4 Dimensions 10
5 Refrigeration Cycle Diagram 12
6 Block Diagram 13
7 Wiring Diagram 14
8 Operation Details 8.1. BASIC FUNCTION Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting.
Table (b): Outdoor Air Temperature Shifting Mode: Outdoor Temperature, X (°C): Cooling/Soft Dry 38 30 23 Temperature Shift (°C) Manual Operation Auto Operation 1.50 2.00 1.25 1.25 1.25 1.25 1.75 1.75 -2.25 -1.50 -1.75 -1.00 -0.75 0.00 0.25 0.25 1.25 1.00 0.75 1.00 1.50 1.00 1.50 1.00 X X X 38 30 X 23 21 X 17 X 21 13 X 17 9 X 13 5 X 9 1 X 5 -3 X 1 X -3 Heating Table (c): Powerful Mode Shifting Mode: Cooling Soft Dry Heating Period, X X X X X X X (min): 20 20 20 20 20 20 Temperature Shift (°C) -2.
8.1.2. Compressor Operation Frequency Intake Air Temperature - Internal Setting Temperature (°C) Cooling & Soft Dry Heating -2.0 1.5 -1.5 1.0 -1.0 0.5 -0.5 0.0 0.0 -0.5 0.5 -1.0 1.0 -1.5 1.5 -2.0 2.0 -2.5 2.5 -3.0 Nil -3.5 Nil -4.0 Zone 1 2 3 4 5 6 7 8 9 10 11 12 Cooling 1 1 14 20 27 35 43 46 46 46 Nil Nil Freq. H Soft Dry Heating 1 1 1 1 8 11 8 15 8 22 11 27 11 36 11 39 11 39 11 39 Nil 39 Nil 39 Remark Fc, Fh Fc, Fh Fc, Fh Fh Fh Operating Frequency Calculation Formula: CompHz = Freq. A × Freq.
8.1.4. 8.1.4.1. Soft Dry Operation Thermostat control • Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -2.5°C. • Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature > Compressor OFF point. 8.1.5. 8.1.5.1. Heating Operation Thermostat control • Compressor is OFF when Intake Air Temperature - Internal Setting > +1.5°C.
Values of T1, T2, and T3 depend on remote control setting temperature, as shown in below table. After the adjustment of T1, T2 and T3 values, the operation mode for that particular environment and remote control setting is judged and performed, based on the above operation mode chart, every 30 minutes.
B. Indoor Fan Control i. Indoor fan control operation outline 1. Cooling / Dry 2.
ii. Auto Fan Speed 1. Cooling 2. Heating Note: a. UP: • If move from Lo, the fan speed will be shifted to Maximum 1520 rpm (E21CK), 1480 rpm (E18CK). • If move from Maximum, the fan speed no change. • In up zone, 10 rpm is added for every 10s until Maximum 1520 rpm (E21CK), 1480 rpm (E18CK). b. DOWN: • The fan speed will be decreased one step every 10 sec. until Minimum 1270 rpm. c. Current Output Fixed: • Maintain at present fan speed. d.
iii. Max Capacity Condition a) During Cooling operation, if all to the following condition is fulfilled, the indoor fan speed is set to Shi. 1. Indoor intake temperature 24°C. 2. Operation frequency 72 Hz (E18CK), 95 Hz (E21CK) & above. 3. Remote Control setting temperature 16°C. 4. Remote Control setting fan speed Hi. 5. Outdoor temperature 6. Operation start 30°C. within 30 minutes. * If any of above conditions is not valid, the condition is ended.
D. Deodorizing Control i. Control condition Control at cooling/dry operation and auto fan speed. No Deodorizing Control is performed during ON timer standby operation and during Anti-freezing control prevention. ii. Operation The odor status is arranged as below and it is shifted as follow. * When COMP is ON 1→2→3 (Shift to 4 when COMP is OFF) * When COMP is OFF 4 → 5 → 4 ←→ 5 (Shift to 1 when COMP is ON) * Start from 4 if the Thermostat is OFF during the start operation.
Basic Rotation Speed 8.1.9. Airflow Direction 1. There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes). 2. Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger temperature and intake air temperature) and manual (angles of direction can be adjusted using remote control).
1. Automatic vertical airflow direction can be set using remote control; the vane swings up and down within the angles as stated above. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below. When the air conditioner is stopped using remote control, the vane will shift to close position. 2.
8.1.10. Quiet operation (Cooling Mode/Cooling area of Dry Mode) A. Purpose To provide quiet cooling operation compare to normal operation. B. Control condition a. Quiet operation start condition • When “quiet” button at remote control is pressed. Quiet LED illuminates. b. Quiet operation stop condition 1. When one of the following conditions is satisfied, quiet operation stops: a. Powerful button is pressed. b. Stop by OFF/ON switch. c. Timer “off” activates. d. When change mode to fan only mode. e.
8.1.10.2. Quiet operation (Heating) A. Purpose To provide quiet heating operation compare to normal operation. B. Control condition a. Quiet operation start condition • When “quiet” button at remote control is pressed. Quiet LED illuminates. b. Quiet operation stop condition 1. When one of the following conditions is satisfied, quiet operation stops: a. Powerful button is pressed. b. Stop by OFF/ON switch. c. Timer “off” activates. d. When change mode to fan only mode. e. Quiet button is pressed again. 2.
8.1.11. Powerful Mode Operation When the powerful mode is selected, the internal setting temperature will shift to achieve the setting temperature quickly. (a) Cooling Operation (b) Soft Dry Operation (c) Heating Operation 8.1.12. Delay ON Timer Control Delay ON timer can be set using remote control, the unit with timer set will start operate earlier than the setting time. This is to provide a comfortable environment when reaching the set ON time.
8.1.14. Auto Restart Control 1. When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within three to four minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be selected randomly) after power supply resumes. 2. This type of control is not applicable during ON/OFF Timer setting. 8.1.15.
8.1.17. Indoor Power Relay Control Power relay will turn on during operation or in progress of stopping operation. Although operation stops, the power relay continues on for three minutes. However, during instantaneous power failure (< 0.5s), power relay will turn off. Then, it will turn on 2 minutes after power recover and the unit will operate as previous operation condition. 8.1.18. Ionizer Operation Purpose To provide fresh air effect to users by discharging minus ion to air. Control Condition a.
3. Ionizer operation status is not memorised by micon. After OFF, when operation is “ON” again, air conditioner operates without ionizer operation. c. Timer during ionizer operation Refer to case study in next page for detail. 8.1.18.1. Ionizer Problem Detection Control i. Purpose To inform user of ionizer problems and detection. ii. Two types of problem detection control: Control Detection Method Protection Recovery ERROR PROTECTION (i) Actual ion: ON (i) Actual ion ON for 10s & OFF for 30 min.
8.2. 8.2.1. 8.2.1.1. Protection Control Features Protection Control For All Operations Time Delay Safety Control 1. The compressor will not start for three minutes after stop of operation. 2. This control is not applicable if the power supply is cut off and on again or after 4-way valve deices condition. 8.2.1.2. 30 Seconds Forced Operation 1. Once the compressor starts operation, it will not stop its operation for 30 seconds. 2.
8.2.1.4. IPM (Power transistor) Prevention Control A. Overheating Prevention Control 1. When the IPM temperature rises to 110°C, compressor operation will stop immediately. 2. Compressor operation restarts after three minutes the temperature decreases to 95°C. B. DC Peak Current Control 1. When electric current to IPM exceeds set value of 25.0 ± 4.0 A, the compressor will stop operate. Then, operation will restart after three minutes. 2.
8.2.1.7. CT Disconnection Detection 1. Control Starting Condition a. Total Current is below 0.74 ~ 0.94 Amp. b. Operating Frequency is 72 Hz (E18CK), 95 Hz (E21CK) +1 and above. c. Continuously for 20s. 2. Control Contents a. Abnormal signal transmitted to indoor unit after 3 minutes outdoor power is supplied. (Indoor unit stop) 3. Control Cancellation Condition Starting condition, (1) is not fulfilled. 8.2.1.8.
8.2.2. 8.2.2.1. Protection Control For Cooling & Soft Dry Operation Outdoor Air Temperature Control The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below. 8.2.2.2. Cooling Overload Control i.
8.2.2.3. Anti-Freezing Control 1. When indoor heat exchanger temperature is lower than 2°C continuously for six minutes, compressor will stop operating. 2. Compressor will resume its operation three minutes after the indoor heat exchanger is higher than 10°C. 3. At the same time, indoor fan speed increase +40 rpm compared to its normal operation. 4. If indoor heat exchanger temperature is higher than 10°C for five minutes, the fan speed will return to its normal operation. 8.2.2.4.
8.2.3. 8.2.3.1. Protection Control For Heating Operation Anti Cold Draft Control Indoor fan speed varies in accordance to indoor heat exchanger temperature, based on type of air volume and direction, as shown below. 1. Manual Fan Speed 2.
Note: a. UP: • If move from Lo, the fan speed will be shifted to Maximum 1520 rpm (E21CK), 1480 rpm (E18CK). • If move from Maximum, the fan speed no change. • In up zone, 10 rpm is added for every 10s until Maximum 1520 rpm (E21CK), 1480 rpm (E18CK). b. DOWN: • The fan speed will be decreased one step every 10 sec. until Minimum 1270 rpm. c. Current Output Fixed: • Maintain at present fan speed. d. Instantaneous Maximum: • Fan speed will be increased to maximum auto fan speed. e.
8.2.3.4. Overload Protection Control The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown in below figures. 8.2.3.5. Outdoor Temperature Control • Outdoor temperature is detected and the following control is perform. • Control operates after more than 1 minute the compressor has started.
8.2.3.6. Deice Control A. Deice operation (Normal Deice Operation) 1. Detection methods Outdoor heat exchanger temperature sensor, timer. 2. Deice operation time chart Notes a. During deice operation, the relationship between outdoor pipe temperature and time T1 is such operation will proceed to next stage. b. The deice will be performed only after 1 hour from when the operation has started. c. When Comp. OFF by the sequence No.
3. Explanation of operation 1) Before the deice is started, compressor frequency is set to the specified value for T0-timer. 2) After deice is started, the 4-way valve, OD Fan and ID fan are OFF. 3) After 4-way valve is OFF for 30 s, compressor frequency is set to the specified value. 4) Before deice is ended, if the outdoor heat exchanger temperature exceeds a°C, set compressor frequency and expansion valve to the specified values. 5) When outdoor heat exchanger temperature exceeds b°C, or 10.
3. Deice condition: OD air temp. t 0°C. OD heat exchanger temp. 0°C for 14 min. OD heat exchanger temp. -8°C for 10 min. 4. Auto clean deice time chart Similar to deice operation 2 except for frequency values. a. Detection methods Outdoor heat exchanger temp. sensor, timer, indoor air temp. sensor. b. Deice operation control time chart.
Notes 1. During deice operation, the relationship between outdoor pipe temperature and time T1 is such proceed to next operation. 2. The deice will be performed only after 1 hour from when the operation has started. 3. When Comp. OFF by the sequence No. 1, 6, 7 compressor can restart back without 3 minutes waits (immediate restart).
9 Operating Instructions 47 Ionizer DO NOT TOUCH 45 46 46 45 46 46 46 46 49 48 44
48 49 50 47 45
Select ON Timer Set time Confirm or OFF Timer Set time Current time OK? –> Setting: page 48 46 Confirm or ON & OFF Timer Set time Confirm
Soaps Neutral household detergents ( pH7) every 6 months see page 44 see page 48 47
refer page 47 48
48 49
NEVER install, remove or reinstall yourself Do NOT pull out the plug by the cable Do NOT insert finger or other objects into the unit! —> especially dangerous for children! 50
44 45 46 46 46 47 47 47 / 48 47 / 48 51
10 Installation And Servicing Air Conditioner Using R410A 10.1. OUTLINE 10.1.1. About R410A Refrigerant 1. Converting air conditioners to R410A Since it was declared in1974 that chlorofluorocarbons (CFC), hydro chlorofluorocarbons (HCFC) and other substances pose a destructive danger to the ozone layer in the earth´s upper stratosphere (20 to 40 km above the earth), measures have been taken around the world to prevent this destruction.
d. R410A refrigerating machine oil Conventionally, mineral oil or a synthetic oil such as alkylbenzene has been used for R22 refrigerating machine oil. Because of the poor compatibility between R410A and conventional oils like mineral oil, however, there is a tendency for the refrigerating machine oil to collect in the refrigerating cycle. For this reason, polyester and other synthetic oils which have a high compatibility with R410A are used as refrigerating machine oil.
10.2.2. R410A Tools 1. Cooper tube gauge for clearance adjustment (used when flaring with the conventional flaring tool (clutch type)) • This gauge makes it easy to set the clearance for the copper tube to 1.0-1.5 mm from the clamp bar of the flaring tool. Fig. 1 Copper tube gauge for clearance adjustment 2. Flaring tool (clutch type) • In the R410A flaring tool, the receiving hole for the clamp bar is enlarged so the clearance from the clamp bar can be set to 0-0.
5. Charging hose • The pressure resistance of the charging hose has been raised to match the higher pressure of R410A. The hose material has also been changed to suit HFC use, and the size of the fitting has been changed to match the manifold ports. Fig. 4 Manifold gauge charging hose Pressure resistance Material Table 8 Difference between R410A and conventional charging hoses Conventional hoses R410A hoses Working pressure 3.4 MPa (35 kgf/cm 3) 5.1 MPa (52 kgf/cm 3) Bursting pressure 17.
8. Electronic scale for refrigerant charging • Because of the high pressure and fast vaporizing speed of R410A, the refrigerant cannot be held in a liquid phase inside the charging cylinder when charging is done using the charging cylinder method, causing bubbles to form in the measurement scale glass and making it difficult to see the reading. (Naturally, the conventional R22 charging cylinder cannot be used because of the differences in the pressure resistance, scale gradation, connecting port size, etc.
10.3. REFRIGERANT PIPING WORK 10.3.1. Piping Materials It is recommended that you use copper and copper alloy jointless pipes with a maximum oil adherence of 40 mg/10m. Do not used pipes that are crushed, deformed, or discolored (especially the inside surface). If these inferior pipes are used, impurities may clog the expansion valves or capillaries. Because the pressure of ACs using R410A is higher than those using R22, it is essential that you select materials that are appropriate for these standards.
Nominal diameter Outside diameter (mm) 1/4 3/8 1/2 6.35 9.52 12.70 Nominal diameter Outside diameter (mm) 1/4 3/8 1/2 6.35 9.52 12.70 Table 11 R410A flaring dimensions Wall thickness (mm) R410A flaring tool, clutch type Clutch type 0.8 0 - 0.5 1.0 0.8 0 - 0.5 1.0 0.8 0 - 0.5 1.0 A (mm) Conventional flaring tool Wing-nut type - 1.5 1.5 - 2.0 - 1.5 1.5 - 2.0 - 1.5 2.0 - 2.5 Table 12 R410A flaring dimensions Wall thickness (mm) R410A flaring tool, clutch type Clutch type 0.8 0 - 0.5 0.5 0.8 0 - 0.
b. Copper pipes Use only copper pipes with the thickness given in table 10, and with minimal impurities. Because the surface of the pipe is exposed, you should take special care, and also take measures such as marking the pipes to make sure they are easily distinguished from other piping materials, to prevent mistaken use. 3. Precautions during refrigerant piping work Take the following precautions on-site when connecting pipes.
10.4.2. Transferring (Using New Refrigerant Piping) 1. Removing the unit a. Collecting the refrigerant into the outdoor unit by pumping down The refrigerant can be collected into the outdoor unit (pumping down) by pressing the TEST RUN button, even when the temperature of the room is low. • Check to make sure that the valve stems of the 2-way valve and 3-way valve have been opened by turning them counterclockwise. (Remove the valve stem caps and check to see that the valve stems are fully opened position.
5. Set the refrigerant cylinder onto the electronic scale, then correct the hose the cylinder and to the connection port for the electronic scale. (1)(2) Precaution: Be sure to set up the cylinder for liquid charging. If you use a cylinder equipped with a siphon tube, you can charge the liquid without having to turn the cylinder around 6. Remove the charging hose of the manifold gauge from the vacuum pump adaptor, and connect it to the connection port of the electronic scale. (2)(3) 7.
10.4.6. Brazing As brazing requires sophisticated techniques and experiences, it must be performed by a qualified person. In order to prevent the oxide film from occurring in the pipe interior during brazing, it is effective to proceed with brazing while letting dry nitrogen gas (N2) flow. 1. Attach a reducing valve to the nitrogen gas cylinder. 2. Attach a reducing valve to the nitrogen gas cylinder. 3.
11 Installation Instructions 1. Philips screw driver 2. Level gauge Required tools for Installation Works 5. Spanner 9. Gas leak detector 6. Pipe cutter 10. Measuring tape 3. Electric drill, hole core drill 7. Reamer (ø70 mm) 4. Hexagonal wrench (4 mm) 8. Knife 11. Thermometer 13. Multimeter 14. Torque wrench 18 N●m (1.8 kgf●m) 55 N●m (5.5 kgf●m) 65 N●m (6.5 kgf●m) 15. Vacuum pump 12. Megameter 16. Gauge manifold 11.1.
1. The equipment must be earthed. It may cause electrical shock if grounding is not perfect. 2. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause fire. 3. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture. 1. Selection of the installation location.
Attached accessories Indoor/Outdoor Unit Installation Diagram Applicable piping kit CZ-4F5, 7, 10AN (E18CK, E21CK) SELECT THE BEST LOCATION INDOOR UNIT • There should not be any heat source or steam near the unit. • There should not be any obstacles blocking the air circulation. • A place where air circulation in the room is good. • A place where drainage can be easily done. • A place where consideration. noise prevention is taken into • Do not install the unit near the door way.
11.2. INDOOR UNIT 11.2.1. SELECT THE BEST LOCATION (Refer to “Select the best location” section) 11.2.3. TO DRILL A HOLE IN THE WALL AND INSTALL A SLEEVE OF PIPING 1. Insert the piping sleeve to the hole. 11.2.2. HOW TO FIX INSTALLATION PLATE 2. Fix the bushing to the sleeve. 3. Cut the sleeve until it extrudes about 15 mm from the wall. The mounting wall is strong and solid enough to prevent it from the vibration.
3. For the embedded piping (This can be used for left rear piping & left bottom piping also.
11.2.5. CONNECT THE CABLE TO THE INDOOR UNIT 1. The inside and outside connecting cable can be connected without removing the front grille. 2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 × 2.5 mm2 (E18CK, E21CK) flexible cord, type designation 245 IEC 57 or heavier cord. • Ensure the color of wires of outdoor unit and the terminal Nos. are the same to the indoor’s respectively.
AUTO SWITCH OPERATION The below operations will be performed by pressing the “AUTO” switch. 1. AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto Switch is pressed. 2. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE) The Test Run operation will be activated if the Auto Switch is pressed continuously for more than 5 sec. to below 8 sec. A “beep” sound will occur at the fifth sec., in order to identify the starting of Test Run operation 3.
CUTTING AND FLARING THE PIPING 1. Please cut using pipe cutter and then remove the burrs. 2. Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe. 3. Please make flare after inserting the flare nut onto the copper pipes. 11.3.4.
11.3.5. CONNECT THE CABLE TO THE OUTDOOR UNIT 1. Remove the control board cover from the unit by loosening the screw. 2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 × 2.5 mm2 (E18CK, E21CK) flexible cord, type designation 245 IEC 57 or heavier cord. 3. Secure the cable onto the control board with the holder (clamper). 4. Attach the control board cover back to the original position with the screw. 11.3.6. PIPE INSULATION 1.
12 Servicing Information Caution: • Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70°F (30 - 40°C) higher. Please use a high temperature soldering iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C). • Pb free solder will tend to splash when heated too high (about 1100° F/600°C). 12.1. Troubleshooting 1.
2. Troubleshooting Air Conditioner Refrigeration cycle system In order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan. The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions, the standard values for them are shown in the table to the right.
1.
Error Codes Table Diagnosis display H11 H14 H15 H16 Abnormality / Protection control Abnormality Judgement Emergency operation Primary location to verify • Internal / external cable connections Indoor / outdoor abnormal communication > 1 min after starting Indoor fan operation operation only Indoor intake air temperature sensor abnormality Outdoor compressor temperature sensor abnormality Outdoor Current Transformer open circuit Continue for 5 sec. — Continue for 5 sec.
12.3. Remote Control • Remote Control Reset When the batteries are inserted for the first time, or the batteries are replaced, all the indications will blink and the remote control might not work. If this happen, remove the cover of the remote control and push the reset point once to clear the memory data.
12.4. Indoor Electronic Controllers Removal Procedures 1. The Electronic Controller, a Signal Receiver and an Indicator (Fig. 3) can be seen by the below steps: • Open the Intake Grille and remove the screw at the front of the Front Grille. (Fig. 1). • Remove the 3 caps and 3 screws at the bottom of the Front Grille. (Fig. 1) • Remove the Front Grille by releasing the 3 hooks at the top of the Front Grille. (Fig. 1) Fig. 1 • Unhook the tabs at the Control Board to remove the Control Board Cover. (Fig.
12.5. Cross Flow Fan and Indoor Fan Motor Removal Procedures 1. In order to remove the Cross Flow Fan and Indoor Fan Motor, Control Board need to be taken out by releasing all the connectors as indicated below. a. Release the Earth Wire screw. (Fig. 5) b. Release the Intake Air Sensor. (Fig. 5) c. Release the Piping Sensor. (Fig. 5) d. Release the CN-REC connectors. (Fig. 5) e. Release the CN-STM1. (Fig. 5) f. Release the CN-STM2. (Fig. 5) g. Release connectors generator Ionizer. (Fig. 5) Fig. 5 2.
6. Remove the Bearing. (Fig. 9) 7. Remove the screws at the left of the Evaporator. (Fig. 9) Fig. 9 8. Push up the Evaporator and pull out the Cross Flow Fan from shaft. By then, Fan Motor can be taken out. (Fig. 10). REMINDER - To reinstall the Fan Motor, put it back in place, adjust the position of the Fan Motor’s leadwire appropriately as shown in the Fig. 8 before installing the Cross Flow Fan. Fig.
12.6. Outdoor Electronic Controller Removal Procedure 1. Remove the top panel and front panel • Be save to return the wiring to its original position • There are many high voltage components within the heat sink cover so never touch the interior during operation. Wait at least two minutes after power has been turned off. Fig. 16 2. Remove the Outdoor Electronic Controller Fig. 18 Fig. 19 Caution! When handling electronic controller, be careful of electrostatic discharge.
13 Technical Data 81
Outdoor Temp. (°C) Indoor wet bulb temp. 17.0°C 19.0°C 19.5°C 22.0°C TC 5.26 30 SHC 3.99 IP 1.51 5.77 6.29 4.17 4.33 1.54 1.57 TC 6.25 30 SHC 4.74 IP 2.02 6.86 7.48 4.96 5.14 2.06 2.10 TC 4.91 5.30 5.40 5.88 35 SHC 3.82 4.01 4.16 IP 1.63 1.65 1.66 1.69 TC 4.57 40 SHC 3.67 IP 1.74 TC 4.16 46 SHC 3.49 IP 1.88 5.02 5.47 3.86 4.01 1.77 1.80 4.56 4.97 3.67 3.83 1.91 1.95 TC 5.43 40 SHC 4.37 IP 2.33 TC 4.94 46 SHC 4.15 IP 2.51 5.97 6.50 4.59 4.77 2.37 2.42 5.42 5.91 4.37 4.
14 Exploded View Note: The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
15 Replacement Parts List REF. NO.
16 Exploded View Note: The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
17 Replacement Parts List REF NO.
18 Electronic Circuit Diagram • CS-E18CKE CS-E21CKE SCHEMATIC DIAGRAM 1/3 TO OUTDOOR 1 2 3 1 2 3 ELECTRONIC CONTROL UNIT 1 2 3 4 5 6 7 8 9 10 TEMPERATURE FUSE CN-MAIN PH10 (WHT) WHT AC5 WHT AC3 FG1 (YLW/GRN) FG2 (YLW/GRN) C29 C31 C30 (BLK) AC6 (RED) AC2 (BRW) AC1 C5 100µ + 16V R9 330Ω C6 47µ 25V C3 1000p (MB) P RY-PWR AC4 + L RY-PWR (BLK) CN-HA 4 3 2 1 DISPLAY C9 0.
SCHEMATIC DIAGRAM 2/3 RECEIVER R14 510Ω CN-RCV C4 1000p (MB) R4 20kΩ R5 20kΩ 6 IC2 R8 5.1kΩ C2 0.022µ R6 100Ω (2125) IC2 C1 0.
SCHEMATIC DIAGRAM 3/3 ELECTRONIC CONTROL UNIT (CONVERTER UNIT) F001 CN001 11 10 9 8 7 6 5 4 3 2 1 C003 L001 Z001 C002 C005 DB004 C004 Z002 R056 TH002 D007 R030 TH001 R046 CN002 1 2 3 4 5 6 7 L002 R003 R028 Q002 R029 4 b R008 4 1 R002 1 PC004 R113 3 R004 ZD005 PC002 3 feedback PC003 1 4 R118 R001 R005 3 2 Q102 Q001 4.
• CU-E18CKE CU-E21CKE SCHEMATIC DIAGRAM 1/5 REACTOR FG1 GRN GRY2 GRY1 JUMPER R177 100k R150 R149 + R170 100k PTC2 R148 ZNR107 DC-2 LJP111 BROWN DC-1 LJP105 BLUE R151 + C101 LJP110 R171 YELLOW 100k R147 + C103 850 400V C102 65 350V + C104 850 400V + + C105 C106 PTC1 R146 ZNR108 TERMINAL 1 2 3 1 2 3 LJP103 YELLOW R145 R144 AC-BLK R141 ZNR102 ERZVEAV511 C2 C4 1.0 250V R140 C3 1.0 250V R143 ZNR103 ERZVEAV511 R142 C6 1.
SCHEMATIC DIAGRAM 2/5 TANK TEMP. SENSOR (50k 3950) CN-TANK 1 2 3 LJP112 BROWN FUSE 3.15A 250V R2 499k 1/4W 1% R28 499k 1/4W 1% R1 499k 1/4W 1% R8 499k 1/4W 1% R139 8.25k 1% R134 7.68k 1% 15 10 1 15 10 43 C15 100 6.3V 10 CN203 + R205 3k Q201 c 2SC2412K R203 CN201 LJP113 BLACK CN201 LJP109 BLACK R206 15k b R204 100k e R263 5.6k C229 3900p R226 1k 14 R201 1k 14 10 D210 RB500V-40 CN201 C230 3900p R207 1k D200 RB500V-40 C203 0.047 25V R237 20k C210 0.
SCHEMATIC DIAGRAM 3/5 IC4 2 x fHz 5 12 RY-2 RY-1 23 24 4 R212 R213 R214 10k 10k 10k 21 30 41 38 6 5 13 12 CN201 CN201 CN201 4 CN202 3 CN202 4 7 6 13 12 7 37 36 35 5 40 8 7 CN201 10 CN201 11 7 CN201 6 1 CN202 R215 R216 R217 10k 10k 10k R218 10k R249 R211 10k C227 0.56 6.3V 85 84 83 82 81 80 79 78 77 76 (2.5V)VDD2 P50 P47 P46 (3.3V)VDD P45 P44 P43 86 (COMP)P51 87 (GND)VSS 88 (U)PWM00 89 (V)PWM01 90 (X)NPWM00 91 (3.
SCHEMATIC DIAGRAM 4/5 FM CN-FW1 (XH7-5) 4 WAYS VALVE CN-HOT (VH3-2) 1 2 3 4 5 6 7 1 2 3 C51 C52 C53 C54 C55 C56 C65 0.22 630V C74 0.047 25V R102 10k R48 R47 14 6 R46 5 3 1 13 4 2 12 10 8 11 9 IC3 TC74HCT700AF D20 ERA15-06 C75 0.047 25V x6 R43 150 R37 R38 R39 R40 R41 R42 x6 R45 680 R31 R32 R33 R34 R35 R36 R44 10k x 6 C57 0.047 25V 7 C66 100 6.
SCHEMATIC DIAGRAM 5/5 T101 ETXMJ326X1C 1 D7 ERA2204-04 d NJM78M15F IC1 + C21 + R21 470 25V (FC) C29 0.22 630V (MF) C22 0.01 C23 0.01 C24 100 25V e 2 D8 ERB83-006 f + C25 470 25V 3 R24 10 1W + C28 470 25V (FC) 6 R20 10 1W R23 4 D9 ERA22-04 5 b R19 10 1W NJM78M05F IC2 + C27 100 16V C26 0.01 R25 4.7k 1/4W R26 c a C30 47 + 25V (FC) AUO1A x 3 D12 C31 + 47 25V (FC) R30 33 2W Q1 C32 0.
How to use electronic circuit diagram TIMER TABLE Name Time 4 way valve abnormality Outdoor air temp. for Hz No. decision Anti-dew formation control Anti-freezing control Thermo OFF delay Low pressure control (gas leakage) compressor OFF time Time delay safety control 4 min. 30 min. 20 min. 6 min. 3 min. 3 min. 2 min. 58 sec. 20 sec. 90 sec. 20 sec. 120 sec. 2 min. 10 sec. 20 sec. 1 hour 120 min. 30 min. 4 min. 30 min. 2 min. Odour timer status shift time Intake air temp.
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