Models: ACMK-H65/5, ACMK-H130/5
| The fault | The fault code definition | possible cause | Solution | |
| code | ||||
| 1. The water flow switch and the power supply wires are not well connected | 1. reconnect the wires firmly | |||
| 2. The water flow switch malfunction | 2. Replace a normal water flow switch | |||
| E01 | The water flow switch protection | 3. Circulating the water pump malfunction | 3. Repair or replace the circulating water pump | |
| 4. The water filter clogging | 4. Clean or replace the water filter | |||
| 5. The evaporator tubes have a dirty plugging phenomenon | 5. Clean the evaporator tubes | |||
| E05 | 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 | ||
| Return the water temperature | 1. The temperature sensor broken | 1. Replace the sensor | ||
| E07 | 2. Sensor plug insert again to PCB | 2. Reconnect the sensor firmly | ||
| sensor the fault | ||||
| 3. Main control board malfunction | 3. Replace the main control board | |||
| The water outlet temperature sensor | 1. The temperature sensor broken | 1. Replace the sensor | ||
| E08 | 2. Sensor plug insert again to PCB | 2. Reconnect the sensor firmly | ||
| the fault | ||||
| 3. Main control board malfunction | 3. Replace the main control board | |||
| The outdoor ambient temperature | 1. The temperature sensor broken | 1. Replace the sensor | ||
| E09 | 2. Sensor plug insert again to PCB | 2. Reconnect the sensor firmly | ||
| sensor the fault | 3. Main control board malfunction | 3. Replace the main control board | ||
| 1. The temperature sensor broken | 1. Replace the temperature sensor | |||
| E12 | Anti-hyperthermal protection | 2. Circulating the water pump malfunction | 2. Repair or replace the circulating water pump | |
| in heating mode | 3. The water filter clogging | 3. Clean or replace the water filter | ||
| 4. The evaporator tubes have a dirty plugging phenomenon | 4. Clean the evaporator tubes | |||
| The water flow shortage protection | 1. The return of the water temperature or the water inlet sensor broken | 1. Replace the temperature sensor | ||
| 2. The water filter clogging | 2. Clean or replace the water filter | |||
| E13 | (Chilled the water big temperature | |||
| 3. Circulating the water pump malfunction | 3. Repair or replace the circulating water pump | |||
| difference) | ||||
| 4. The evaporator tubes have a dirty plugging phenomenon | 4. Clean the evaporator tubes | |||
| 1. The connection plug loose | 1. reconnect firmly | |||
| E15 | Communication the fault between | 2. Wired controller malfunction | 2. replace a new one | |
| wired 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 | |||
| 1. The connection plug loose | 1. reconnect firmly | |||
| Communication the fault between | 2. The communication wire between modules is a short circuit | 2. replace a new one | ||
| E30 | or open circuit | |||
| different 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 |
| E18 | Subsystem1#highpressure | 1. the outdoor ventilation is insufficient | 1. Improve or enhance the ventilation | ||
| protection | 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 | ||||
| E19 | Subsystem 2#high pressure | motor lose | |||
| protection | 4. the outdoor fan stops working | 4. Eliminate the malfunction cause | |||
| 5. the connection between the high-pressure switch and the main | 5. Reconnect the wire plug to the main control board | ||||
| Subsystem 3#high pressure | |||||
| E20 | control board lose | ||||
| protection | 6. High-pressure switch malfunction | 6. Replace the high-pressure switch | |||
| 7. the outdoor exchanger is dirty or sticky | 7. Clean the heat exchanger | ||||
| Subsystem 4#high pressure | |||||
| E21 | 8. there are some airs in the refrigerant line | 8. Refill the freon unit after vacuuming it | |||
| protection | 9. The capillary or the filter is blocked | 9. Replace the capillary or filter | |||
| E22 | Subsystem 1#low pressure | 1. Circulating the water pump malfunction | 1. Repair it or change a normal one | ||
| 2. Clean the water filter | |||||
| protection | 2. The water filter clogging | ||||
| 3. Clean the evaporator tubes | |||||
| E23 | Subsystem 2#low pressure | 3. The evaporator tubes have a dirty plugging phenomenon | |||
| 4. The connection between the low-pressure switch and the main | |||||
| protection | 4. Reconnect the wire to the main control board | ||||
| control board lose | |||||
| Subsystem 3#low pressure | |||||
| E24 | 5. Low-pressure switch malfunction | 5. Replace the low-pressure switch | |||
| protection | 6. Refrigerant leak | ||||
| 6. Find out the leak point, repair the welding, refill the freon unit | |||||
| Subsystem 4#low pressure | |||||
| E25 | 7. The capillary or the filter is blocked | after vacuuming it | |||
| protection | |||||
| 7. Replace the capillary or filter | |||||
| Subsystem 1# air discharge | 1. the outdoor ventilation is insufficient | 1. Improve or enhance the ventilation | |||
| 2. the outdoor fan blade is broken | 2. Replace the fan blade | ||||
| E26 | temperature overhigh | ||||
| protection | 3. the connection between the fan blade and the outdoor fan | 3. Tighten or replace the sleeve | |||
| motor lose | |||||
| Subsystem 2# air discharge | |||||
| E27 | 4. the outdoor fan stops working | 4. Eliminate the malfunction cause | |||
| temperature overhigh | 5. the connection between the discharge temperature sensor | 5. Reconnect the wire plug to the main control board | |||
| protection | |||||
| and the main control board lose | |||||
| Subsystem 3# air discharge | 6. the outdoor exchanger is dirty or sticky | 6. Clean the heat exchanger | |||
| 7. discharge temperature sensor deviation | 7. Replace the sensor | ||||
| E28 | temperature overhigh | ||||
| 8. Refrigerant leak | 8. Find out the leak point, repair the welding, refill the freon unit | ||||
| protection | |||||
| after vacuuming it | |||||
| Subsystem 4# air discharge | 9. The indoor capillary or the filter is blocked | ||||
| 9. Replace the capillary or filter | |||||
| E29 | temperature overhigh | 10. there are some airs in the refrigerant line | 10. Find out the leak point, repair the welding, refill the freon | ||
| protection | unit after vacuuming it | ||||
| 1. the water outlet temperature sensor malfunction | 1. Replace a normal one | ||||
| 2. Circulating the water pump malfunction | 2. Repair it or change a normal one | ||||
| E33 | Anti-freezing protection in | 3. The water filter clogging | 3. Clean the water filter | ||
| cooling mode | 4. The evaporator tubes have a dirty plugging phenomenon | 4. Clean the evaporator tubes | |||
| 5. Refrigerant leak | 5. Find out the leak point, repair the welding, refill the freon unit | ||||
| after vacuuming it | |||||
| E34 | Subsystem 1# the compressor | 1. The outdoor ventilation is insufficient | 1. Improve or enhance the ventilation | |
| overcurrent protection | 2. Tighten or replace the sleeve | |||
| 2. The connection between the fan blade and the outdoor fan | ||||
| Subsystem 2# the compressor | ||||
| E35 | motor lose | 3. Eliminate the malfunction cause | ||
| overcurrent protection | 3. the outdoor fan stops working | |||
| 4. Replace the fan blade | ||||
| 4. The outdoor fan blade is broken | ||||
| Subsystem 3# the compressor | ||||
| E36 | 5. Clean the heat exchanger | |||
| 5. The outdoor exchanger is dirty or sticky | ||||
| overcurrent protection | 6. Replace the capillary or filter | |||
| 6. Pipeline ice blocking or dirty | ||||
| Subsystem 4# the compressor | 7. Release some refrigerant | |||
| E37 | 7. Refrigerant overcharged | |||
| overcurrent protection | ||||
| E38 | Subsystem 1# 4-way valve the fault | 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 | |||
| E39 | Subsystem 2# 4-way valve the fault | |||
| blow-by | ||||
| E40 | Subsystem 3# 4-way valve the fault | 3. The outdoor ambient temperature sensor or exchanger coil | 3. Replace a normal one | |
| temperature sensor malfunction | ||||
| E41 | Subsystem 4# 4-way valve the fault | |||
| 4. The main PCB failure | 4. Replace the main PCB board | |||
| E42 | Subsystem 1# discharge | |||
| temperature sensor the fault | ||||
| E43 | Subsystem 2# discharge | 1. Sensor is an open or short circuit | 1. Replace the sensor | |
| temperature sensor the fault | ||||
| 2. Sensor plug insert again | 2. Reinsert firmly | |||
| Subsystem 3# discharge | ||||
| E44 | 3. Main control board malfunction | 3. Replace the main control board | ||
| temperature sensor the fault | ||||
| E45 | Subsystem 4# discharge | |||
| temperature sensor the fault | ||||
| E46 | Subsystem 1# exchanger coil | |||
| temperature sensor the fault | ||||
| E47 | Subsystem 2# exchanger coil | 1. Sensor is an open or short circuit | 1. Replace the sensor | |
| temperature sensor the fault | ||||
| 2. Sensor plug insert again | 2. Reinsert firmly | |||
| Subsystem 3# exchanger coil | ||||
| E48 | 3. Main control board malfunction | 3. Replace the main control board | ||
| temperature sensor the fault | ||||
| E49 | Subsystem 4# exchanger coil | |||
| temperature sensor the fault | ||||
| E53 | Module type dip switch setting | Module type dip switch setting incorrect | Reset the Module type dip switch setting concerning the | |
| incorrect | wiring diagram | |||
| E54 | Module address repeat | Module address dip switch setting incorrect | reset address setting dip switch concerning wiring | |
| diagram as needed | ||||