4TH GENERATION MULTI-ZONE SERVICE MANUAL
Table of Contents §. Safety Precautions 1. Precautions 2. Information servicing (For flammable materials) §. Specifications 1. Model Reference 2. Pipe Length and Drop Height 3. Indoor units combination 4. Refrigeration Cycle Diagrams 5. Electrical Wiring Diagrams §. Electronic Functions 1 Abbreviation 2 Electric Control Working Environment 3 Main Protection 4 Control and Functions §. Outdoor Unit Disassembly 1. Outdoor Unit Table 2. Dimension 3.
§. Troubleshooting 1. Safety Caution 2. General Troubleshooting 3. Complain Record Form 4. Information Inquiry 5. Outdoor Unit Point Check Function 6. Error Diagnosis and Troubleshooting Without Error Code 7. Quick Maintenance by Error Code 8. Troubleshooting by Error Code 9.
Safety Precautions Contents 1. Precautions .............................................................................................................2 2. Information servicing (For flammable materials) ................................................
1. Precautions CAUTION To prevent personal injury, or property or unit damage, adhere to all precautionary measures and instructions outlined in this manual. Before servicing a unit, refer to this service manual and its relevant sections. Failure to adhere to all precautionary measures listed in this section may result in personal injury, damage to the unit or to property, or in extreme cases, death.
2. Information servicing(For flammable materials) 2.1 • NO SMOKING signs shall be displayed. Checks to the area • Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimized. • For repair to the refrigerating system, the following precautions shall be complied with prior to conducting work on the system. 2.
• that capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking; • that there no live electrical components and wiring are exposed while charging, recovering or purging the system; • that there is continuity of earth bonding. 2.10 Repairs to sealed components • During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to any removal of sealed covers, etc.
• The refrigerant charge shall be recovered into the correct recovery cylinders. The system shall be flushed with OFN to render the unit safe. This process may need to be repeated several times. Compressed air or oxygen shall not be used for this task. Flushing shall be achieved by breaking the vacuum in the system with OFN and continuing to fill until the working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum.
• Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs. • The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of flammable refrigerants. In addition, a set of calibrated weighing scales shall be available and in good working order. • Hoses shall be complete with leak-free disconnect couplings and in good condition.
Specifications Contents 1. Model Reference.....................................................................................................2 2. Pipe Length and Drop Height................................................................................3 3. Indoor units combination......................................................................................4 4. Refrigeration Cycle Diagrams................................................................................5 5.
1. Model Reference Refer to the following table to determine the specific outdoor unit model.
2. Pipe Length and Drop Height The length and elevation of connection pipe are shown in the table below. if the pipe length exceeds max pipe length, additional refrigerant should be charged to ensure nominal cooling/heating capacity. 1 drive 2 1 drive 3 1 drive 4 1 drive 5 Max. length for all rooms (m) 30 45 60 75 Max. length for one IU (m) 15 15 15 15 Max. height difference between IU and OU (m) 10 10 10 10 10 10 10 10 Max.
3. Indoor units combination 3.1 Indoor unit combination for M2OA-18HFN1-MQ1 One unit Two units 9 9+9 12 9+12 12+12 3.2 Indoor unit combination for M3OH-27HFN1-MQ1 One unit Two units Three units 9 9+9 9+9+9 12 9+12 9+9+12 18 9+18 9+9+18 12+12 9+12+12 12+18 12+12+12 18+18 3.
Four units Five units 9+9+9+9 9+9+12+12 9+12+12+12 12+12+12+12 9+9+9+9+9 9+9+9+12+24 9+9+9+12 9+9+12+18 9+12+12+18 12+12+12+18 9+9+9+9+12 9+9+12+12+12 9+9+9+18 9+9+12+24 9+12+12+24 12+12+12+24 9+9+9+9+18 9+9+12+12+18 9+9+9+24 9+9+12+30 9+12+12+30 12+12+18+18 9+9+9+9+24 9+12+12+12+12 9+9+9+30 9+9+18+18 9+12+18+18 9+9+9+12+12 12+12+12+12+12 9+9+9+36 9+9+18+24 9+12+18+24 9+9+9+12+18
4. Refrigeration Cycle Diagrams 4.1 Refrigeration Cycle Diagram of inverter 1 drive 2 type 4.
4.3 Refrigeration Cycle Diagram of inverter 1 drive 4 type 4.
5.
5(8)
MAIN CONTROL BOARD COMP TOP HEAT_Y HEAT_D COMP. TOP OLP TEMP.
Outdoor unit printed circuit board diagram: 17122000051368
No.
No. 13 14 Name COMPRESSOR DC-FAN CN# Meaning U connect to compressor V 0V AC (standby) W 10-200V AC (running) CN32 connect to DC fan Note: This section is for reference only. Please take practicality as standard.
Outdoor unit printed circuit board diagram: 17122300001076
No.
Outdoor unit IPM board diagram: 17122000018251
No. Name CN# Meaning CN4 CN4 connect to main board L-Out CN5 CN5 connect to main board N-Out 2 CN_Reactor CN2/CN3 connect to reactor 3 CN_COMP CN_COMP connect to compressor 4 CN1 CN1 connect to main board CN21 5 FAN_DC CN14 connect to outdoor DC fan 1 Note: This section is for reference only. Please take practicality as standard.
Outdoor unit printed circuit board diagram: 17122000037804
No. Name 1 Power Supply CN# Meaning CN1 L1_in: connect to L1-line (230V AC input) CN3 L2_in: connect to L2-line (230V AC input) 2 TP CN8 Exhaust temp. sensor TP 3 TESTPORT CN35 used for testing 4 HEAT1 CN19/CN20 connect to chassis heater, 208-230V AC when is ON 5 HEAT2 CN24/CN25 connect to compressor heater, 208-230V AC when is ON 6 4-WAY CN17/CN18 connect to 4 way valve, 208-230V AC when is ON.
Outdoor unit IPM board diagram: 17122000042012
No. Name 1 Power Supply CN# Meaning CN3 connect to main board L-Out CN2 connect to main board N-Out connect to main board CN6 2 / CN9 3 FAN_DC FAN_1/FAN_2 connect to outdoor DC fan 1& DC fan 2 U1 4 CN_COMP V1 connect to compressor W1 Note: This section is for reference only. Please take practicality as standard.
Electronic Functions Contents 1 Abbreviation...........................................................................................................2 2 Electric Control Working Environment.................................................................2 3 Main Protection......................................................................................................2 4 Control and Functions............................................................................................
1. Abbreviation then restart untill TP<90°C (194°F). R32 models:TA=100°C (212°F), TB=103°C (217.4°F), 108°C (226.4°F) Unit element abbreviations Abbreviation Element T1 Indoor room temperature Other models: TA=105°C (221°F), TB=110°C (230°F), 115°C (239°F) T2 Middle indoor heat exchanger coil temperature 3.
3.4.2 Heating mode: 2. The EXV continues at 300p while indoor units maintain their operation. If the outdoor ambient temperature is higher than the set frequency during oil return, the unit stops the oil return process. 3.8 Low Outdoor Ambient Temperature Protection • When the compressor is off and T4 is lower than -35°C for 10 seconds, the unit stops and displays “LP” or “PC 0L”. • When the compressor is on and T4 remains lower than -40°C for 10 seconds, the unit stops and displays “LP” or “PC 0L”.
Total capacity Request=∑Capacity request of indoor unit /40× modify rate(ucOutHP) Note: The final result is an integer. If ucOutHP <1, round down, otherwise round up. Note: The final result is an integer. If ucOutHP <1, round down, otherwise round up. 4.2 4.1.2 4.2.1 Heating Mode: Outdoor Fan Control Cooling Mode T4 Capacity area a b c d e f Norm code (N) 3 2 1.5 1 0.
4.2.2 Heating Mode • Failure or protection (excluding discharge temperature protection and high/low pressure protection) causes the four-way valve to immediately shut down. T4 21 19 18 16 15 13 12 10 0 -2 Breeze fan speed Supper low fan speed Low fan speed Middle fan speed High fan speed Supper high fan speed To meet T4>T4HeatLimit_ADD_3, first determine the initial fan based on T4.
Outdoor Unit Disassembly Contents 1. Outdoor Unit Table.................................................................................................2 2. Dimension...............................................................................................................3 3. Outdoor Unit Disassembly.....................................................................................9 3.1 Panel Plate.................................................................................................
1. Outdoor Unit Disassembly 1.
2. Dimension 2.1.
2.2.
2.3.
2.4.
2.5.
2.6.
2.7.
2.8.
2.6.
3. Outdoor Unit Disassembly 3.1 Panel Plate 1. D30 Procedure Illustration 1) Turn off the air conditioner and the power breaker. 2) Remove three screws and then remove the shield. (see CJ_Multi_D30-001). Shield CJ_Multi_D30-001 Big Handle For US models, remove four screws and then remove the big handle. Remove three screws and then remove the water collecting cover. (see CJ_Multi_ D30-001(US). Water collecting cover CJ_Multi_D30-001(US) Note: This section is for reference only.
Procedure Illustration 3) Remove the screws of the top cover and then remove the top cover (4 screws). Two of the screws is located underneath the big handle (see CJ_ Multi_D30-002). CJ_Multi_D30-002 4) Remove the screws of the front right panel and then remove the front right panel (2 screws) (see CJ_Multi_D30003). Front Right Panel CJ_Multi_D30-003 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 5) Remove the screws of the front panel and then remove the front panel (9 screws) (see CJ_Multi_D30-004). Front Panel CJ_Multi_D30-004 6) Remove the screws of the rear net and then remove the rear net (6 screws) (see CJ_Multi_D30-005). (for some models) CJ_Multi_D30-005 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 7) Remove the screws of the right panel and then remove the right panel (12 screws) (see CJ_multi_D30-006 and CJ_Multi_D30-007). Right Panel CJ_Multi_D30-006 CJ_Multi_D30-007 Note: This section is for reference only. Actual unit appearance may vary.
3. B30 Procedure Illustration 1) Turn off the air conditioner and the power breaker. 2) Remove the screw of the shield and then remove it.(1 screw) (see CJ_ Multi_B30-001). Shield CJ_Multi_B30-001 3) Remove the screws of the top cover and then remove the top cover (3 screws). One of the screws is located underneath the big handle (see CJ_ B30_002). CJ_Multi_B30-002 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 4) Remove the screws of the front panel and then remove the front panel (8 screws) (see CJ_Multi_B30-003). CJ_Multi_B30-003 5) Remove the screws of the right panel (10 screws) (see CJ_Multi_B30-004). CJ_Multi_B30-004 Note: This section is for reference only. Actual unit appearance may vary.
4. CA30 Procedure Illustration 1) Turn off the air conditioner and the power breaker. 2) Remove the screws of the shield and then remove it.(3 screws) (see CJ_ Multi_CA30-001). Shield CJ_Multi_CA30-001 3) Remove the screws of the top cover and then remove the top cover (3 screws). One of the screws is located underneath the big handle (see CJ_ Multi_CA30-002). CJ_Multi_CA30-002 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 4) Remove the screws of the front panel and then remove the front panel (7 screws) (see CJ_Multi_CA30-003). CJ_Multi_CA30-003 5) Remove the screws of the right panel and then remove the right panel (12 screws) (see CJ_CA30_004). CJ_Multi_CA30-004 Note: This section is for reference only. Actual unit appearance may vary.
4. E30 Procedure Illustration Big Handle 1) Turn off the air conditioner and the power breaker. 2) Remove the screws of the big handle and then remove it.(3 screws) (see CJ_Multi_E30-001). 3) Remove the screws of the water collecting cover and then remove it.(3 screws) (see CJ_Multi_E30-001). water collectng cover CJ_Multi_E30-001 4) Unfix the four screws of the top cover and then remove it. (see CJ_Multi_ E30-002). CJ_Multi_E30-002 Note: This section is for reference only.
Procedure Illustration 5) Remove the two screws of the right front panel and then push it down to unhook the right fornt pannel from the nine hooks.(see CJ_Multi_E30003). CJ_Multi_E30-003 6) Remove the seven screws of the front panel and then remove the front panel (see CJ_Multi_E30-004). CJ_Multi_E30-004 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 1) Unfix the screws on the right side of the right panel.(9 screws)(see CJ_ Multi_E30-005). CJ_Multi_E30-005 2) Remove the screws on the back of the right panel and then remove the right panel and rear net.(9 screws).(see CJ_Multi_E30-006). CJ_Multi_E30-006 Note: This section is for reference only. Actual unit appearance may vary.
5. X330 Procedure Illustration 1) Turn off the air conditioner and the power breaker. 2) Remove the screw of the shield and then remove it.(1 screw) (see CJ_ Multi_X330_001). CJ_Multi_X330_001 3) Remove the screws of the top cover and then remove the top cover (4 screws). (see CJ_Multi_X330_002). CJ_Multi_X330_002 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 4) Remove the screws of the front panel and then remove the front panel (8 screws) (see CJ_Multi_X330_003). 5) Remove the screws of the right panel and then remove the right panel (9 screws) (see CJ_Multi_X330_005). CJ_Multi_X330_003 CJ_Multi_X330_004 Note: This section is for reference only. Actual unit appearance may vary.
6. X430 Procedure Illustration 1) Turn off the air conditioner and the power breaker. 2) Remove the screws of the shield and then remove it.(4 screws). For US models, remove the screws of big handle assembly and water collector then remove them.(6 screws) (see CJ_Multi_X430_001). For US models CJ_Multi_X430_001 3) Remove the screws of the top cover and then remove the top cover (3 screws). One of the screws is located underneath the big handle (see CJ_ Multi_X430_002).
Procedure Illustration 4) Remove the screws of the front panel and then remove the front panel (7 screws) (see CJ_Multi_X430_003). CJ_Multi_X430_003 5) Remove the screws of the right panel and then remove the right panel (14 screws, two of them are used to fix the optional rear net) (see CJ_Multi_ X430_004). CJ_Multi_X430_004 Note: This section is for reference only. Actual unit appearance may vary.
3.2 Electrical parts WARNING: Antistatic gloves must be worn when you disassemble the electronic box. Note: Remove the air outlet grille(refer to 1.1 Panel Plate) before disassembling electrical parts. PCB Board 1 Procedure Illustration 1) Remove the screws of the ground wirings. (3 screws) (CJ_MultiPCB_001-1). CJ_Multi-PCB_001-1 Top Cover 2) Unfix the hooks and screw and then open the electronic control box cover (5 hooks and 1 screw)(see CJ_MultiPCB_001-2).
Procedure Illustration 3) Disconnect the connector for outdoor DC fan from the electronic control board (see CJ_Multi-PCB_001-3). 6,) /TJ[IZUX 4) Remove the connector for the compressor (see CJ_MultiPCB_001-3). 5) Pull out the two blue wires connected with the four way valve (see CJ_MultiPCB_001-3). 6) Pull out connectors of the condenser coil temp. sensor(T3),outdoor ambient temp. sensor(T4) and discharge temp. sensor(TP) (see CJ_Multi-PCB_001-3).
PCB Board 2 Procedure Illustration 1) Remove the screws of the top cover. (2 screws) (CJ_Multi-PCB_002-1). CJ_Multi-PCB_002-1 2) Unfix the screws and then turn over the IPM board (4 screws ) (see CJ_ Multi-PCB_002-2). CJ_Multi-PCB_002-2 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 3) Disconnect the connector for outdoor DC fan from the electronic control board (see CJ_Multi-PCB_002-3). 4) Remove the connector for the compressor (see CJ_MultiPCB_002-4). 5) Pull out the two blue wires connected with the four way valve (see CJ_MultiPCB_002-4). Compressor 6) Pull out connectors of the condenser coil temp. sensor(T3),outdoor ambient temp. sensor(T4) and discharge temp. sensor(TP) (see CJ_Multi-PCB_002-4).
PCB board 3 Procedure Illustration 1) Remove the screws of the top cover. (2 screws) (see CJ_MultiPCB_003-1). CJ_Multi-PCB_003-1 2) Unfix the hooks and then open the electronic control box cover (4 hooks) (see CJ_Multi-PCB_003-2). 3) Disconnect the connector for fan motor from the electronic control board (see CJ_Multi-PCB_003-3). 4) Remove the connector for the compressor (see CJ_MultiPCB_003-3).
Procedure Illustration 9) Unfix the hooks and then remove the electronic installing box . (2 screws) (see CJ_Multi_PCB_003-4）. CJ_Multi-PCB_003-4 10)Remove one screw of module board. (see CJ_Multi_PCB_003-5). CJ_Multi-PCB_003-5 Electronic expansion valve T2B 11)Disconnect the connectors of the module board. (see CJ_Multi_ PCB_003-6). connected to main board CJ_Multi-PCB_003-6 Note: This section is for reference only. Actual unit appearance may vary.
PCB board 4 Procedure Illustration 1) Remove the screws and then remove the reactor 1. (2 screws) (see CJ_ Multi_PCB_004-1). CJ_Multi-PCB_004-1 2) Remove the screws and then remove the reactor 2 (see CJ_Multi_ PCB_004-2). CJ_Multi-PCB_004-2 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 3) Unfix five screws and then remove the radiating pipe. (see CJ_Multi_ PCB_004-3). 4) Unfix two screws on the main board (see CJ_Multi_PCB_004-3). 5) Disconnect the connectors on the main board.(see CJ_Multi_PCB_0043). CJ_Multi-PCB_004-3 6) Unfix two screws on the upper board (see CJ_Multi_PCB_004-4). 7) Remove the connectors on the upper board (see CJ_Multi_PCB_004-4). CJ_Multi-PCB_004-4 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 8) Unfix two screws on the bottom board. (see CJ_Multi_PCB_004-5). 9) Disconnect the connectors on the bottom board (see CJ_Multi_ PCB_004-5). CJ_Multi-PCB_004-5 Note: This section is for reference only. Actual unit appearance may vary.
PCB board 5 Procedure Illustration 1) Disconnect the connector for compressor and release the ground wire(1 screw). (see CJ_ODU_Multi_ PCB_005-1). 2) Pull out the wires from electrical supporting plate and turn over the electronic control assembly. (see CJ_ODU_Multi_PCB_005-2). CJ_ODU_Multi_PCB_005-1 CJ_ODU_Multi_PCB_005-2 3) Remove the electronic installing box subassembly (4 hooks) (see CJ_ODU_ Multi_PCB_005-3). CJ_ODU_Multi_PCB_005-3 Note: This section is for reference only.
Procedure Illustration 4) Remove the fixing board (2 hooks) (see CJ_ODU_Multi_PCB_005-4). CJ_ODU_Multi_PCB_005-4 5) Disconnect the connectors from the electronic control board (see CJ_ODU_Multi_PCB_005-5). CJ_ODU_Multi_PCB_005-5 6) Then remove the electronic control board (4 hooks).(see CJ_ODU_Multi_ PCB_005-6). CJ_ODU_Multi_PCB_005-6 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 7) Unfix the hooks and then remove the electronic installing box . (2 screws) (see CJ_Multi_PCB_005-7）. CJ_Multi-PCB_005-7 8) Remove one screw of module board. (see CJ_Multi_PCB_005-8). CJ_Multi-PCB_005-8 9) Disconnect the connectors of the module board. (see CJ_Multi_ PCB_005-9). CJ_Multi-PCB_005-9 Note: This section is for reference only. Actual unit appearance may vary.
PCB board 6 Procedure Illustration 1) Remove 5 screws of the cover of electrical control box cover and remove it. (see CJ_ODU_Multi_ PCB_006-1). CJ_ODU_Multi_PCB_006-1 2) Cut the ribbon by a shear and disconnect the 4-way valve connector. (see CJ_ODU_Multi_ PCB_006-2). CJ_ODU_Multi_PCB_006-2 3) Ture over the electronic control box subassembly. (see CJ_ODU_Multi_ PCB_006-3). CJ_ODU_Multi_PCB_006-3 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 4) Remove the electronic installing box subassembly (4 hooks) (see CJ_ODU_ Multi_PCB_006-4). CJ_ODU_Multi_PCB_006-4 5) Remove the support of electronic control box.(see CJ_ODU_Multi_ PCB_006-5). CJ_ODU_Multi_PCB_006-5 Note: This section is for reference only. Actual unit appearance may vary.
Procedure Illustration 6) Disconnect the connectors from the electronic control board (see CJ_ODU_Multi_PCB_006-6). 7) Remove 2 screws and then remove the electronic control board.(see CJ_ODU_Multi_PCB_006-6). CJ_ODU_Multi_PCB_006-6 8) Pull out the connector, remove one screw and then remove the key board subassembly on terminal board. (see CJ_Multi_PCB_006-7). CJ_Multi-PCB_006-7 Note: This section is for reference only. Actual unit appearance may vary.
3.3 Fan Assembly Note: Remove the panel plate (refer to 1.1 Panel Plate) before disassembling fan. Procedure Illustration 1) Remove the nut securing the fan with a spanner (see CJ_ODU_ FAN_001). 2) Remove the fan. CJ_ODU_FAN_001 Note: This section is for reference only. Actual unit appearance may vary.
3.4 Fan Motor Note: Remove the panel plate and the connection of fan motor on PCB (refer to 1.1 Panel Plate and 1.2 Electrical parts) before disassembling fan motor. Procedure Illustration 3) Remove the fixing screws of the fan motor (4 screws) (see CJ_ODU_MOTOR_001). 4) Remove the fan motor. CJ_ODU_MOTOR_001 Note: This section is for reference only. Actual unit appearance may vary.
3.5 Sound blanket Note: Remove the panel plate (refer to 1.1 Panel plate) before disassembling sound blanket. Procedure Illustration 1) Remove the sound blanket (side and top) (see CJ_ODU_BLANKET_001). Sound Blanket(top) Sound Blanket(side) CJ_ODU_BLANKET_001 Note: This section is for reference only. Actual unit appearance may vary.
3.6 Four-way valve (for heat pump models) WARNING: Evacuate the system and confirm that there is no refrigerant left in the system before removing the four-way valve and the compressor. (For R32 & R290, you should evacuate the system with the vacuum pump; flush the system with nitrogen; then repeat the two steps before heating up the brazed parts. The operations above should be implemented by professionals.) Note: Remove the panel plate, connection of four-way valve on PCB (refer to 1.1 Panel plate and 1.
3.7 Compressor WARNING: Evacuate the system and confirm that there is no refrigerant left in the system before removing the four-way valve and the compressor. (For R32 & R290, you should evacuate the system with the vacuum pump; flush the system with nitrogen; then repeat the two steps before heating up the brazed parts. The operations above should be implemented by professionals.) Note: Remove the panel plate, connection of compressor on PCB (refer to 1.1 Panel plate and 1.
Procedure Illustration 3) Remove the hex nuts and washers securing the compressor, located on the bottom plate (see CJ_ODU_COMP_003). CJ_ODU_COMP_003 Suction Pipe 4) Heat up the brazed parts and then remove the the discharge pipe and the suction pipe (see CJ_ODU_COMP_004). 5) Lift the compressor from the base pan assembly with pliers. Discharge Pipe CJ_ODU_COMP_004 Note: This section is for reference only. Actual unit appearance may vary.
Troubleshooting Contents 1. Safety Caution........................................................................................................3 2. General Troubleshooting.......................................................................................4 2.1 Error Display (Indoor Unit)...............................................................................4 2.2 Error Display (Outdoor Unit)............................................................................6 3.
Troubleshooting Contents 8.7 PC 01(Over voltage or too low voltage protection)/PC 10(Outdoor unit low AC voltage protection)/PC 11(Outdoor unit main control board DC bus high voltage protection)/PC 12(Outdoor unit main control board DC bus high voltage protection /341 MCE error) Diagnosis and Solution 38 8.8 PC40(Communication malfunction between IPM board and outdoor main board diagnosis and solution) ................................................................................40 8.
1. Safety Caution WARNING Be sure to turn off all power supplies or disconnect all wires to avoid electric shock. While checking indoor/outdoor PCB, please equip oneself with antistatic gloves or wrist strap to avoid damage to the board. WARNING Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before troubleshooting. Test the voltage between P and N on back of the main PCB with multimeter.
2. General Troubleshooting 2.1 Error Display (Indoor Unit) When the indoor unit encounters a recognized error on different models , 1. the running LED with flash in a corresponding series, the timer LED may turn on or begin flashing; 2. an error code will be displayed; 3. both 1 and 2.
For other errors: The display board may show a garbled code or a code undefined by the service manual. Ensure that this code is not a temperature reading. Troubleshooting: Test the unit using the remote control. If the unit does not respond to the remote, the indoor PCB requires replacement. If the unit responds, the display board requires replacement. 88 flash frequency: ... ...
2.
3. Complain Record Form Complain Record Form Request No.: Date: Installation Date: Service Date: Customer Information Name Telephone No. Home Address Email Product Information Indoor Unit Model Outdoor Unit Model Serial No. of indoor unit Serial No.
Parameter Checking information by Remote controller Displaying code Displaying code meaning T1 Room temperature T2 Indoor coil temperature T3 Outdoor coil temperature T4 Ambient temperature Tb Outlet temperature of indoor coil TP Discharge temperature TH Sunction temperature FT Targeted Frequency Fr Actual Frequency IF Indoor fan speed OF Outdoor fan speed LA EXV opening steps CT Compressor continuous running time ST Causes of compressor stop.
4. Information Inquiry • To enter information inquiry status, complete the following procedure within 10 seconds: • Press LED 3 times. • Press SWING 3 times. • Finish 1 and 2 within 10 seconds, you will hear beeps for two seconds, which means the unit goes into parameter checking mode. • Use the LED(or DO NOT DISTURB) and SWING(or AIR DIRECTION) buttons to cycle through information displayed. • Pressing LED(or DO NOT DISTURB) displays the next code in the sequence.
Displayed code Displayed value Explanation T1 Room temperature T2 Indoor coil temperature T3 Outdoor coil temperature T4 Ambient temperature Tb Meaning Additional Notes 1. All displayed temperatures use actual values. 2. All temperatures are displayed in °C regardless of remote used.
Displayed code Explanation Displayed value Meaning Additional Notes A0 A1 0 1 2 3 0-FF 4 5 6 L Reserved 2-28 5-20 - 5-25 A U T A 5 T Troubleshooting 11 -
5. Outdoor Unit Point Check Function • A check switch is included on the outdoor PCB. • Push SW1 to check the unit’s status while running. The digital display shows the following codes each time the SW1 is pushed.
17 Indoor unit A evaporator outlet temperature (T2BA) 18 Indoor unit B evaporator outlet temperature (T2BB) 19 20 If the temperature is lower than -9oC, the digital display Indoor unit C evaporator outlet shows “-9.” If the temperature is higher than 70oC, the digital temperature (T2BC) display shows “70.
37 EXV open angle for A indoor unit 38 EXV open angle for B indoor unit 39 EXV open angle for C indoor unit 40 EXV open angle for D indoor unit 41 EXV open angle for E indoor unit 42 Frequency limit symbol Actual data/4. If the value is higher than 99, the digital display shows single and double digits. For example, if the digital display shows “2.0”, the EXV open angle is 120×4=480p.
For key board models, Number of Presses 0 Display Remark Normal display Displays running frequency, running state, or malfunction code Display Number of indoor unit 1 Quantity of indoor units with working connection 1 1 2 2 3 3 4 4 2 Outdoor unit running mode code 3 Indoor unit A capacity 4 Indoor unit B capacity 5 Indoor unit C capacity The capacity unit is horse power.
22 Indoor unit A room temperature (T1A) 23 Indoor unit B room temperature (T1B) 24 Indoor unit C room temperature (T1C) 25 Indoor unit D room temperature (T1D) 26 Indoor unit E room temperature (T1E) 27 Indoor unit A evaporator temperature (T2A) 28 Indoor unit B evaporator temperature (T2B) 29 Indoor unit C evaporator temperature (T2C) 30 Indoor unit D evaporator temperature (T2D) 31 Indoor unit E evaporator temperature (T2E) 32 Condenser pipe temperature (T3) 33 Outdoor ambient tempe
45 Frequency limit symbol Bit7 Frequency limit caused by IGBT radiator Bit6 Frequency limit caused by PFC Bit5 Frequency limit caused by T4. Bit4 Frequency limit caused by T2. Bit3 Frequency limit caused by T3. Bit2 Frequency limit caused by T5. Bit1 Frequency limit caused by current Bit0 Frequency limit caused by voltage The display value is a hexidecimal number. For example, the digital display show 2A, then Bit5=1, Bit3=1, and Bit1=1.
6. Error Diagnosis and Troubleshooting Without Error Code WARNING Be sure to turn off unit before any maintenance to prevent damage or injury. 6.1 Remote maintenance SUGGESTION: When troubles occur, please check the following points with customers before field maintenance. No. 6.
Problem Solution 1 Unit will not start Page 22~23 2 Compressor will not start but fans run Page 22~23 3 Compressor and condenser (outdoor) fan will not start Page 22~23 4 Evaporator (indoor) fan will not start Page 22~23 5 Condenser (Outdoor) fan will not start Page 22~23 6 Unit runs, but shortly stops Page 22~23 7 Compressor short-cycles due to overload Page 22~23 8 High discharge pressure Page 22~23 9 Low discharge pressure Page 22~23 10 High suction pressure Page 22~23 11
Test method / remedy ☆ ☆ Troubleshooting 20 ☆ Turn the AC later Turn the AC later Turn off SILENCE function.
Shipping plates remain attached Interference from cell phone towers and remote boosters The air inlet or outlet of either unit is blocked Heavy load condition Possible causes of trouble Bad airproof Others Loosen hold down bolts and / or screws 1.
Test method / remedy ☆ Troubleshooting 22 ☆ ☆ ☆ ☆ Rectify piping so as not to contact each other or with external plate ☆ Choose AC of lager capacity or add the number of AC Compressor is noisy ☆ ☆ ☆ Remove them ☆ ☆ ☆ ☆ ☆ Contact of piping with other piping or external plate Poor choices of capacity Shipping plates remain attached Loosen hold down bolts and / or screws Heavy load condition Poor installation of feeler bulb Leaking power element on expansion valve Expansion valve or capill
Test method / remedy ☆ ☆ Condenser (Outdoor) fan will not start ☆ ☆ Unit runs, but shortly stops ☆ ☆ Compressor short-cycles due to overload ☆ ☆ ☆ ☆ Troubleshooting 23 Check resistance with multimeter ☆ Evaporator (indoor) fan will not start ☆ ☆ Check resistance with multimeter Compressor and condenser (outdoor) fan will not start Replace the stepping motor ☆ Test voltage ☆ Test continuity of coil & contacts Compressor will not start but fans run Test continuity of coil & contacts ☆ ☆
7. Quick Maintenance by Error Code If you do not have the time to test which specific parts are faulty, you can directly change the required parts according the error code. You can find the parts to replace by error code in the following table.
Part requiring replacement Error Code EC 07/ (O)EC 71 PC 08/(O)PC 44/ PC 46/ PC 49 PC 00/PC 04 PC 01/(O)PC 10/PC 11/PC 12 (O)PC 0F x x x x x x x x x x x x x x x x x x x x x EC 51 EC 56 Outdoor fan motor x x T3 Sensor x x x x T4 Sensor x x x TP Sensor x x T2B Sensor x Reactor or inductance x x x Compressor x x x IPM module board x x x x Bridge rectifier x x x x PFC module x x x x x x Additional refrigerant x x x x x x x Electric c
Part requiring replacement Error Code PC 40 EC 72 PC 43 PC 45 (O)Pc 06 (O)PC 30 PC 03/ (O)pc 31 x x x x x x x x (O)Pc 0a x Outdoor PCB Outdoor fan motor x x x x T3 Sensor x x x x x T4 Sensor x x x x x TP Sensor x x x x T2B Sensor x x x x x x x x Reactor or inductance x x x x x x x x Compressor x x x x x x x IPM module board x x x x x x x Bridge rectifier x x x x x x x x PFC module x x x x x x x x Additional refrigera
8. Troubleshooting by Error Code 8.1 EH 00 /EC 51 (EEPROM parameter error diagnosis and solution) Description: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Recommended parts to prepare: • Indoor PCB • Outdoor PCB Troubleshooting and repair: EH 00 EC 51 Shut Shut off off the the power power supply supply and and turn turn itit on on 22 minutes minutes later. later.
8.2 EL 01(Indoor and outdoor unit communication error diagnosis and solution) Description: Indoor unit does not receive the feedback from outdoor unit during 110 seconds and this condition happens 4 times continuously.
Indoor / outdoor units communication error Start: Power off , then Power on the A/C by the Breaker. (reconnect the power wire). Is it still displaying the error code? Yes Check wiring on the outdoor and indoor terminal follow the wiring diagram. Is all connecting correctly? Reconnect the wiring No No Reconnect the wiring Yes Turn on all indoor unit by remote controller.
Remarks: • Use a multimeter to test the resistance of the reactor which does not connect with capacitor. • The normal value should be around zero ohm. Otherwise, the reactor must have malfunction. Note: The picture and the value are only for reference, actual condition and specific value may vary.
8.3 EH 03 / EC 07 (Fan Speed Is Operating Outside of Normal Range)/EC 71(Over Current Failure of Outdoor DC Fan Motor) Diagnosis and Solution Description: When indoor / outdoor fan speed keeps too low or too high for a certain time, the LED displays the failure code and the AC turns off. Recommended parts to prepare: • Connection wires • Fan assembly • Fan motor • PCB Troubleshooting and repair: Power off, then restart the unit after 2 minutes.
Index: 1. Indoor or Outdoor DC Fan Motor(control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector. If the value of the voltage is not in the range showing in below table, the PCB must has problems and need to be replaced. • DC motor voltage input and output (voltage: 220-240V~): No. Color Signal Voltage 1 Red Vs/Vm 192V~380V 2 --- --- --- 3 Black GND 0V 4 White Vcc 13.5-16.5V 5 Yellow Vsp 0~6.
8.4 EH 60/EH 61/EC 53/EC 52/EC 54/EC 56 /(ODU)EC 50 (Open circuit or short circuit of temperature sensor diagnosis and solution) Description: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure code. Recommended parts to prepare: • Connection wires • Sensors • PCB Troubleshooting and repair: Check the connection between temperature sensor and PCB. Is it properly wired? NO Ensure proper connections. YES Measure the resistance value of the sensor.
8.5 PC 08(Current overload protection)/PC 44(Outdoor unit zero speed protection) /PC 46(Compressor speed has been out of control)/PC 49(Compressor overcurrent failure) Description: An abnormal current rise is detected by checking the specified current detection circuit.
Current protection of compressor Was the protection activated in standby? Yes No Is the power voltage is normal? Restart the unit when the power supply returns to normal No Yes Is outdoor terminal voltage normal？ No Is the power wiring wired correctly? Reconnect the power wiring No Are L and N wired properly? Reconnect L and N No Is the bridge rectifier wired properly? Reconnect the bridge rectifier Yes Is the voltage between L and N is normal？ Yes Is the input voltage of the bridge rectifier
8.6 PC 00(IPM malfunction diagnosis and solution)&(IDU)PC 04(Inverter compressor drive error diagnosis and solution) Description: PC 00/(ODU)P6:When the voltage signal the IPM sends to the compressor drive chip is abnormal, the LED displays the failure code and the AC turns off.
IPM IPM module module protection protection No Restart Restart the the unit unit when when the the power power supply supply returns returns to to normal normal No IsIs the the power power voltage voltage normal? normal? Yes IsIs the the outdoor outdoor terminal terminal voltage voltage normal？ normal？ No Are Are the the power power wires wires connected connected properly? properly? Reconnect Reconnect the the power power wires wires No Are Are LL and and N N wired wired correctly? correctly? Recon
8.7 PC 01/E5(Over voltage or too low voltage protection)/PC 10(Outdoor unit low AC voltage protection)/PC 11(Outdoor unit main control board DC bus high voltage protection)/PC 12(Outdoor unit main control board DC bus high voltage protection /341 MCE error) Diagnosis and Solution Description: Abnormal increases or decreases in voltage are detected by checking the specified voltage detection circuit.
Voltage Voltage protection protection Check Check whether whether the the power power voltage voltage isis normal. normal.
8.8 PC 40(Communication malfunction between IPM board and outdoor main board diagnosis and solution) Description: The main PCB cannot detect the IPM board.
8.9 (ODU)PC 0F(PFC module protection diagnosis and solution) Description: Outdoor PCB detects PFC signal is low voltage or DC voltage is lower than 340V for 6s when quick check.
8.
8.
Check Check the the connection connection between between temperature temperature sensor sensor and and PCB. PCB. No High High temperature temperature protection protection of of condenser condenser No Correct Correct the the connection connection Yes Check Check whether whether the the condenser condenser temperature temperature isis Higher Higher than than 65°C 65°C Check Check whether whether the the resistance resistance of of condenser condenser temp. temp.
8.12 EH 02 (Zero crossing detection error diagnosis and solution) Description: When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal. Recommended parts to prepare: • Connection wires • Indoor main PCB Troubleshooting and repair: Check the connections and power supply. Is it normal? NO Correct the connections. Turn on the unit when the power supply is good. YES Indoor main PCB is defective. Replace indoor main PCB.
8.13 PC 02 (Top temperature protection of compressor diagnosis and solution) Description: If the sampling voltage is not 5V, the LED will display the failure. Recommended parts to prepare: • Connection wires • Overload protector • Outdoor PCB Troubleshooting and repair: Check if the air flow system of indoor and outdoor units are obstructed? Clear up the air inlet and outlet or the heat exchanger of indoor and outdoor units. Yes No Turn off the power supply and turn it on 10 minutes later.
8.14 (IDU)PC 03/(ODU)PC 30 (High pressure protection diagnosis and solution) Description: Outdoor pressure switch cut off the system because high pressure is higher than 4.
High High pressure pressure protection protection Are Are the the high high pressure pressure switch switch and and main main control control boar boar wired wired correctly? correctly? No Connect Connect high high pressure pressure switch switch and and mian mian control control board board Yes IsIs the the high high pressure pressure protector protector broken? broken? Method: Method: Disconnect Disconnect the the plug. plug.
8.15 (IDU)PC 03/(ODU)PC 31 (Low pressure protection diagnosis and solution) Description: Outdoor pressure switch cut off the system because low pressure is lower than 0.13 MPa, the LED displays the failure code.
Low Low pressure pressure protection protection Are Are the the low low pressure pressure protector protector and and main main control control board board wired wired properly? properly? No Reconnect Reconnect the the low low pressure pressure protector protector and and main main control control board board Yes IsIs the the low low pressure pressure protector protector broken? broken? Method: Method: Disconnect Disconnect the the plug. plug.
8.16 EC 72 (Lack phase failure of outdoor DC fan motor diagnosis and solution) Description: When the three-phase sampling current of the DC motor is abnormal, especially when the current of one or more phases is always small and almost 0, the LED displays the failure code. Recommended parts to prepare: • Connection wire • Fan motor • Outdoor PCB Troubleshooting and repair: Power off,then restart the unit 2 minutes later.
8.17 PC 43 (Outdoor compressor lack phase protection diagnosis and solution) Description: When the three-phase sampling current of the compressor is abnormal, especially when the current of one or more phases is always small and almost 0, the LED displays the failure code Recommended parts to prepare: • Connection wire • Compressor • Outdoor PCB Troubleshooting and repair: Power off,then restart the unit 2 minutes later.
8.18 PC 45 (Outdoor unit IR chip drive failure diagnosis and solution) Description: When the IR chip detects its own parameter error, the LED displays the failure code when power on. Recommended parts to prepare: • Inverter module PCB. Troubleshooting and repair: Power off,then restart the unit 2 minutes later. Yes Replace the inverter module PCB. 8.
8. Check Procedures 8.1 Temperature Sensor Check WARNING Be sure to turn off all power supplies or disconnect all wires to avoid electric shock. Operate after compressor and coil have returned to normal temperature in case of injury. 1. Disconnect the temperature sensor from PCB (Refer to Chapter 5&6. Indoor&Outdoor Unit Disassembly). 2. Measure the resistance value of the sensor using a multi-meter. 3. Check corresponding temperature sensor resistance value table (Refer to Chapter 8. Appendix).
Resistance Value KSN133D42UFZ ATN150D30UFZA ATF235D22UMT GKT176MBH KTM240D57UMT 1.82Ω 1.03Ω 0.75 Ω 1.75 Ω 0.62 Ω Blue-Red Blue-Black Red-Black Resistance Value ATM150D23UFZ ATF235D22UMT ATF310D43UMT ATQ360D1UMU EAPQ420D1UMUA KTM180D68UMT 1.72Ω 0.75Ω 0.65 Ω 0.37 Ω 0.37 Ω 1.91 Ω ASM135D23UFZ KTF310D43UMT KSN140D21UFZ KSN140D58UFZ KTN150D30UFZA KTM240D57UMT 1.75Ω 0.65Ω 1.28 Ω 1.86 Ω 1.28 Ω 0.
1.2 IPM Continuity Check WARNING Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before troubleshooting. 1. Turn off outdoor unit and disconnect power supply. 2. Discharge electrolytic capacitors and ensure all energy-storage unit has been discharged. 3. Disassemble outdoor PCB or disassemble IPM board. 4. Measure the resistance value between P and U(V, W, N); U(V, W) and N.
Normal voltage of P and N 208-240V(1-phase,3-phase) 380-415V(3-phase) around 310VDC around 530VDC In standby In operation With passive PFC module With partial active PFC module >200VDC 1.3 >310VDC With fully active PFC / module >370VDC >450VDC Reactor Check Measure the resistance and voltage (to ground) of the reactor. The normal resistance should be around 0.1 ohm. Otherwise, the reactor must have malfunction. 1.4 4-way valve Check 1.
1.5 EXV Check 1. Turn off outdoor unit and disconnect power supply. 2. Disconnect the connectors of EXV. 3. Measure the resistance value between Red and Blue(Yellow); Brown and Orange(White).
Appendix Contents i) Temperature Sensor Resistance Value Table for T1, T2, T3, and T4 (°C – K).......2 ii) Temperature Sensor Resistance Value Table for TP (for some units)(°C --K)......3 iii) Pressure On Service Port........................................................................................
i) Temperature Sensor Resistance Value Table for T1,T2,T3 and T4 (°C – K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm -20 -4 115.266 20 68 12.6431 60 140 2.35774 100 212 0.62973 -19 -2 108.146 21 70 12.0561 61 142 2.27249 101 214 0.61148 -18 0 101.517 22 72 11.5 62 144 2.19073 102 216 0.59386 -17 1 96.3423 23 73 10.9731 63 145 2.11241 103 217 0.57683 -16 3 89.5865 24 75 10.4736 64 147 2.03732 104 219 0.56038 -15 5 84.
ii) Temperature Sensor Resistance Value Table for TP(for some units) (°C --K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm -20 -4 542.7 20 68 68.66 60 140 13.59 100 212 3.702 -19 -2 511.9 21 70 65.62 61 142 13.11 101 214 3.595 -18 0 483 22 72 62.73 62 144 12.65 102 216 3.492 -17 1 455.9 23 73 59.98 63 145 12.21 103 217 3.392 -16 3 430.5 24 75 57.37 64 147 11.79 104 219 3.
iii) Pressure On Service Port Cooling chart(R410A): °F(°C) BAR PSI MPa ODU(DB) 0(-17) 5(-15) 15 (-9.44) 45 (7.22) 75 (23.89) 85 (29.44) 95 (35) 105 (40.56) 115 (46.11) 120 (48.89) 70/59 (21.11/15) 6.4 6.5 7.3 8.0 8.2 7.8 8.1 8.6 10.1 10.6 75/63 (23.89/17.22) 6.7 6.8 7.9 8.6 8.6 8.3 8.7 9.1 10.7 11.2 80/67 (26.67/19.44) 7.1 7.2 8.5 9.5 9.3 8.9 9.1 9.6 11.2 11.9 90/73 (32.22/22.78) 7.7 7.8 9.6 10.5 10.3 9.5 10.0 10.6 12.4 13.0 70/59 (21.
Heating chart(R410A): °F(°C) BAR PSI MPa ODU(DB/WB) 57/53 (13.89/11.67) 47/43 (8.33/6.11) 37/33 (2.78/0.56) 27/23 (-2.78/-5) 17/13 (-8.33/10.56) 0/-2 (-17/-19) -17/-18 (-27/-28) 55(12.78) 30.3 28.5 25.3 22.8 20.8 18.5 16.5 65(18.33) 32.5 30.0 26.6 25.4 23.3 20.5 19.0 75(23.89) 33.8 31.5 27.8 26.3 24.9 21.5 20.0 55(12.78) 439 413 367 330 302 268 239 65(18.33) 471 435 386 368 339 297 276 IDU(DB) 75(23.89) 489 457 403 381 362 312 290 55(12.78) 3.
Cooling chart(R22): °F(°C) BAR PSI MPa ODU(DB) 0(-17) 5(-15) 15 (-9.44) 45 (7.22) 75 (23.89) 85 (29.44) 95 (35) 105 (40.56) 115 (46.11) 120 (48.89) 70/59 (21.11/15) 4.0 4.1 4.6 5.0 5.1 4.9 5.1 5.4 6.3 6.6 75/63 (23.89/17.22) 4.2 4.3 4.9 5.4 5.4 5.2 5.4 5.7 6.7 7.0 80/67 (26.67/19.44) 4.4 4.5 5.3 5.9 5.8 5.6 5.7 6.0 7.0 7.4 90/73 (32.22/22.78) 4.8 4.9 6.0 6.6 6.4 5.9 6.3 6.6 7.8 8.1 70/59 (21.11/15) 58 59 67 73 74 71 74 78 91 96 75/63 (23.
Heating chart(R22): °F(°C) ODU(DB/WB) 57/53 (13.89/11.67) 47/43 (8.33/6.11) 37/33 (2.78/0.56) 27/23 (-2.78/-5) 17/13 (-8.33/10.56) 0/-2 (-17/-19) -17/-18 (-27/-28) 55(12.78) 18.9 17.8 15.8 14.3 13.0 11.6 10.3 65(18.33) 20.3 18.8 16.6 15.9 14.6 12.8 11.9 75(23.89) 21.1 19.7 17.3 16.4 15.6 13.4 12.5 55(12.78) 274 258 229 207 189 168 149 65(18.33) 294 273 241 231 212 186 172.6 IDU(DB) BAR PSI MPa 75(23.89) 306 286 251 238 226 194 181 55(12.78) 1.
Cooling chart(R32): °F(°C) BAR PSI MPa ODU(DB) 0(-17) 5(-15) 15 (-9.44) 45 (7.22) 75 (23.89) 85 (29.44) 95 (35) 105 (40.56) 115 (46.11) 120 (48.89) 70/59 (21.11/15) 6.5 6.6 7.4 8.2 8.4 8.0 8.3 8.8 10.3 10.8 75/63 (23.89/17.22) 6.8 6.9 8.1 8.8 8.8 8.5 8.9 9.3 10.9 11.4 80/67 (26.67/19.44) 7.2 7.3 8.7 9.7 9.5 9.1 9.3 9.8 11.4 12.1 90/73 (32.22/22.78) 7.9 8.0 9.8 10.7 10.5 9.7 10.2 10.8 12.6 13.3 70/59 (21.
Heating chart(R32): °F(°C) ODU(DB/WB) 57/53 (13.89/11.67) 47/43 (8.33/6.11) 37/33 (2.78/0.56) 27/23 (-2.78/-5) 17/13 (-8.33/10.56) 0/-2 (-17/-19) -17/-18 (-27/-28) 55(12.78) 30.9 29.1 25.8 23.3 21.2 18.9 16.8 65(18.33) 33.2 30.6 27.1 25.9 23.8 20.9 19.4 75(23.89) 34.5 32.1 28.4 26.8 25.4 21.9 20.4 55(12.78) 448 421 374 337 308 273 244 65(18.33) 480 444 394 375 346 303 282 IDU(DB) BAR PSI MPa 75(23.89) 499 466 411 389 369 318 296 55(12.78) 3.
System Pressure Table-R22 Pressure Temperature Pressure Temperature Kpa bar PSI °C °F Kpa bar PSI °C °F 100 1 14.5 -41.091 -41.964 1600 16 232 41.748 107.146 150 1.5 21.75 -32.077 -25.739 1650 16.5 239.25 43.029 109.452 200 2 29 -25.177 -13.319 1700 17 246.5 44.281 111.706 250 2.5 36.25 -19.508 -3.114 1750 17.5 253.75 45.506 113.911 300 3 43.5 -14.654 5.623 1800 18 261 46.706 116.071 350 3.5 50.75 -10.384 13.309 1850 18.5 268.25 47.
System Pressure Table-R410A Pressure Temperature Pressure Temperature Kpa bar PSI °C °F Kpa bar PSI °C °F 100 1 14.5 -51.623 -60.921 2350 23.5 340.75 38.817 101.871 150 1.5 21.75 -43.327 -45.989 2400 24 348 39.68 103.424 200 2 29 -36.992 -34.586 2450 24.5 355.25 40.531 104.956 250 2.5 36.25 -31.795 -25.231 2500 25 362.5 41.368 106.462 300 3 43.5 -27.351 -17.232 2550 25.5 369.75 42.192 107.946 350 3.5 50.75 -23.448 -10.
System Pressure Table-R32 Pressure Temperature Pressure Temperature Kpa bar PSI °C °F Kpa bar PSI °C °F 100 1 14.5 -51.909 -61.436 1850 18.5 268.25 28.425 83.165 150 1.5 21.75 -43.635 -46.543 1900 19 275.5 29.447 85.005 200 2 29 -37.323 -35.181 1950 19.5 282.75 30.448 86.806 250 2.5 36.25 -32.15 -25.87 2000 20 290 31.431 88.576 300 3 43.5 -27.731 -17.916 2050 20.5 297.25 32.395 90.311 350 3.5 50.75 -23.85 -10.93 2100 21 304.5 33.
