Aux X type Chiller AC Error Codes

Models: ACMX-H65/5, ACMX-H95/5, ACMX-H130/5, ACMX-H65/5R1

the fault code the fault code definition possible cause Solution
1 、 The water flow switch and the power supply wires are not well 1. reconnect the wires firmly
connected 2. Replace a normal water flow switch
E01 2. The water flow switch malfunction
The water flow switch protection 3. Repair or replace the circulating water pump
3. Circulating the water pump malfunction
4. Clean or replace the water filter
4. The water filter clogging
5. Clean the evaporator tubes
5. The evaporator tubes have a dirty plugging phenomenon
E03 The outdoor fan NO1.  &NO3. overload 1. The outdoor unit ventilation is insufficient 1. Improve or enhance the ventilation
protection
E04 The outdoor fan NO2.  overload protection 2. The fan motor stuck 2. Replace the fan motor
E05 Input the power supply phase sequence 1. Phase loss 1. reconnect the wires firmly
protection 2. Phase dislocation 2. change the two-phase sequence of the power supply
E07 Return the water temperature to the fault 1. The temperature sensor broken 1. Replace the sensor
2. Sensor plug insert again to PCB 2. Reconnect the sensor firmly
3. Main control board malfunction 3. Replace the main control board
E08 The water outlet temperature is the fault 1. The temperature sensor broken 1. Replace the sensor
2. Sensor plug insert again to PCB 2. Reconnect the sensor firmly
3. Main control board malfunction 3. Replace the main control board
1. The temperature sensor broken 1.  Replace the temperature sensor
2. Repair or replace the circulating water pump
E12 Anti-hyperthermal protection 2. Circulating the water pump malfunction
3.  Clean or replace the water filter
in heating mode 3. The water filter clogging
4. Clean the evaporator tubes
4. The evaporator tubes have a dirty plugging phenomenon
1 The return of the water temperature or the water inlet sensor 1.  Replace the temperature sensor
The water flow shortage protection broken 2. Clean or replace the water filter
E13 2. The water filter clogging 3.  Repair or replace the circulating water pump
(Chilled the water big temperature difference)
3. Circulating the water pump malfunction 4. Clean the evaporator tubes
4. The evaporator tubes have a dirty plugging phenomenon
1. The connection plug loose 1. Reconnect firmly
E15 Communication the fault between wired 2. Wired controller malfunction 2. Replace a new one
controller and PCB 3. The communication wire is an open or short circuit 3. Replace a normal one
4. Main control board malfunction 4. Replace a new one
E16 Circulating the water anti-freezing protection 1.  The outdoor ambient temperature is too low 1. Start the heating mode
in winter 2. The outdoor ambient temperature sensor malfunction 2. Replace The outdoor ambient temperature sensor

 

1. The outdoor ventilation is insufficient 1. Improve or enhance the ventilation
E26 High discharge temperature protection of 2. The outdoor fan blade is broken 2. Replace the fan blade
the compressor 1# 3. The connection between the fan blade and the outdoor fan 3. Tighten or replace the sleeve
motor lose
4. The outdoor fan stops working 4. Eliminate the malfunction cause
5. The connection between the discharge temperature sensor 5. Reconnect the wire plug to the main control board
E27 High discharge temperature protection of and the main control board lose
the compressor 2# 6. The outdoor exchanger is dirty or sticky 6. Clean the heat exchanger
7. Discharge temperature sensor deviation 7. Replace the sensor
8. Refrigerant leak 8. Find out the leak point, repair the welding, refill
High discharge temperature protection of unit after vacuuming it
E28 9. The indoor capillary or the filter is blocked 9. Replace the capillary or filter
the compressor 3# 10. There are some airs in the refrigerant line 10. Find out the leak point, repair the welding, refill
the unit after vacuuming it
1. The connection plug loose 1. Reconnect firmly
E30 Communication the fault between different 2. The communication wire between modules is short 2. Replace a new one
circuit or open circuit
modules
3. The communication wire is an open or short circuit 3. Replace a normal one
4. Main control board malfunction 4. Replace a new one
1. The water outlet temperature sensor malfunction 1. Replace a normal one
2. Repair it or change a normal one
2. Circulating the water pump malfunction
E33 3. Clean the water filter
Anti-freezing protection in cooling mode 3. The water filter clogging
4. Clean the evaporator tubes
4. The evaporator tubes have a dirty plugging phenomenon
5. Refrigerant leak 5. Find out the leak point, repair the welding, refill the freon
unit after vacuuming it
E34 Over-current protection of the compressor 1# 1. The outdoor ventilation is insufficient 1. Improve or enhance the ventilation
2. Tighten or replace the sleeve
2. The connection between the fan blade and the outdoor fan
motor lose 3. Eliminate the malfunction cause
3. The outdoor fan stops working
E35 Over-current protection of the compressor 2# 4. Replace the fan blade
4. The outdoor fan blade is broken
5. The outdoor exchanger is dirty or sticky 5. Clean the heat exchanger
6. Replace the capillary or filter
6. Pipeline ice blocking or dirty
E36 Over-current protection of the compressor 3# 7. Release some refrigerant
7. Refrigerant overcharged
1. 4-way valve coil open or short circuit 1. Replace valve coil
2. Valve block cannot get the designated position or Valve 2. Replace valve body
E38 The four-way valve malfunction blow-by
3. The outdoor ambient temperature sensor malfunction or 3. Replace a normal one
exchanger coil temperature sensor
4. The main PCB failure 4. Replace the main PCB board

 

1. The outdoor ventilation is insufficient 1. Improve or enhance the ventilation
2. The outdoor fan blade is broken 2. Replace the fan blade
3. The connection between the fan blade and the outdoor fan 3. Tighten or replace the sleeve
motor lose
E39 4. The outdoor fan stops working 4. Eliminate the malfunction cause
High-pressure protection 5. The connection between the high-pressure switch and the main 5. Reconnect the wire plug to the main control board
control board lose
6. High-pressure switch malfunction 6. Replace the high-pressure switch
7. The outdoor exchanger is dirty or sticky 7. Clean the heat exchanger
8. There are some airs in the refrigerant line 8. Refill the freon unit after vacuuming it
9. The capillary or the filter is blocked 9. Replace the capillary or filter
1. Circulating the water pump malfunction 1. Repair it or change a normal one
2. The water filter clogging 2. Clean the water filter
3. The evaporator tubes have a dirty plugging phenomenon 3. Clean the evaporator tubes
E40 Low-pressure protection 4. The connection between the low-pressure switch and the main 4. Reconnect the wire to the main control board
control board lose
5. Low-pressure switch malfunction 5. Replace the low-pressure switch
6. Refrigerant leak 6. Find out the leak point, repair the welding, refill the freon
unit after vacuuming it
7. The capillary or the filter is blocked 7. Replace the capillary or filter
1. Sensor is an open or short circuit 1. Replace the sensor
E41 Exchanger coil bottom temperature 2. The sensor separates from the copper tube 2. Refix the sensor correctly
sensor the fault 3. Sensor plug insert again 3. Reinsert firmly
4. Main control board malfunction 4. Replace the main control board
E42 Discharge temperature sensor the fault of 1. Sensor is an open or short circuit 1. Replace the sensor
the compressor 1#
2. The sensor separates from the copper tube 2. Refix the sensor correctly
E43 Discharge temperature sensor the fault of
the compressor 2# 3. Sensor plug insert again 3. Reinsert firmly
E44 Discharge temperature sensor the fault of 4. Main control board malfunction 4. Replace the main control board
the compressor 3#
1. Sensor is an open or short circuit 1. Replace the sensor
E50 Suction temperature sensor the fault 2. The sensor separates from the copper tube 2. Refix the sensor correctly
3. Sensor plug insert again 3. Reinsert firmly
4. Main control board malfunction 4. Replace the main control board
1. Sensor is an open or short circuit 1. Replace the sensor
E51 Evaporator temperature sensor the fault 2. The sensor separates from the copper tube 2. Refix the sensor correctly
3. Sensor plug insert again 3. Reinsert firmly
4. Main control board malfunction 4. Replace the main control board
E52 1. The outdoor ventilation is insufficient 1. Improve or enhance the ventilation
Cooling overload protection 2. Replace the fan blade
2. The outdoor fan blade is broken
3. Tighten or replace the sleeve

 

3. The connection between the fan blade and the outdoor fan 4. Eliminate the malfunction cause
motor lose
4. The outdoor fan stops working 5. Replace the sensor
5. Exchanger coil bottom temperature sensor malfunction 6. Clean the heat exchanger
6. The outdoor exchanger is dirty or sticky 7. Refill the freon unit after vacuuming it
7.  There are some airs in the refrigerant line 8. Replace the capillary or filter
8. The capillary or the filter is blocked
E53 Module type dip switch setting incorrect Module type dip switch setting incorrect Reset Module type dip switch setting with reference
to the wiring diagram
E54 Module address repeat Module address dip switch setting incorrect Reset address setting dip switch concerning
wiring diagram as needed

 

 

 

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