Midea Package Air-cooled Modular Chiller Error Codes
Midea Chiller Error Codes
Error Codes Cause
E0 Water-flow detection error (the third time)
E1 Power phases sequence failure
E2 Communication failure
E3 Total outlet water Temperature sensor failure (available for main unit)
E4 Outlet water temperature sensor in double-pipe heat interchanger error
E5 Pipe temperature sensor in condenser A error
E6 Pipe temperature sensor in condenser B error
E7 Outdoor Temperature sensor failure
E8 Error of the Air Exhaust Temp. Sensor at Digital Compressor
E9 Water-flow check trouble(wire controller and control board can recover automatically when the trouble is displayed for the first and second times
EA Main unit detect that auxiliary unit’s quantity have decreased.
Eb Freeze-proof temperature sensor 1 in double-pipe heat interchanger error
EC Wire controller can not search the modules on line
ED Wire control and module unit communication error
Ed 1-hour consecutive 4-times PE protection
EE Wire control and computer communication error
EF Inlet water temperature sensor error
P0 System A high-pressure protection or discharge gas temperature protection
P1 System A low-pressure protection
P2 System B high-pressure protection or discharge gas temperature protection
P3 System B low-pressure protection
P4 System A current protection
P5 System B current protection
P6 System A Condenser high-temperature protection
P7 System B Condenser high-Temperature protection
P8 Digital compressor discharge Temperature protection, when it is above 125℃
Pb System anti-freeze protection
PE Low-temperature protection of double-pipe heat interchanger
F1 Eeprom failure
F2 Failure of reduction of wired controller number at parallel connection of multiple wired controller (reserved)
CP Anti-freeze protection of plate heat exchanger for 5/7kW
CL Protection when temperature difference between inlet & outlet water in cooling mode is too large for 5/7kW.
CH Protection when temperature difference between inlet & outlet water in heating mode is too large for 5/7kW
C8 Water flow switch protection malfunction
C0 Temperature sensor malfunction of plate heat exchanger for 5/7kW.
d8 Remote control
HH Inlet water temperature sensor malfunction for 5/7kW models.
Midea Chiller Remote Control
Troubleshooting and Solutions Troubles: Over high air discharge pressure(Cooling operation).
Air or other non-condensing gas still in the system.
Fins in the condenser are dirty or foreign substance blocking fins.
Insufficient chilling air volume or condenser fan error.
Excessive high air suction pressure.
Excessive refrigerant charging volume.
Over high ambient temperature.
Discharge gas from refrigerant charging inlet. Re-vacuum the system if necessary.
Clean condenser fins.
Check and repair the condenser fan, recover the normal operation.
See “Excessive high air suction pressure”.
Discharge the excessive refrigerant.
Check ambient temperature.
Troubles: Over low air discharge pressure (Cooling operation).
Surrounding temperature is lower.
Refrigerant leak or insufficient.
Low suction pressure.
Measure the surrounding temp.
Leak-hunting or recharging.
Refer to the “low suction pressure”.
Troubles: Over high air suction pressure (Cooling operation).
High temperature of the inlet chilled-water.
Discharge the additional refrigerant.
Check the heat insulation of water pipeline.
Troubles: Compressor stops because of freeze-proof protection
Insufficient chilling water flow volume.
Gas still in water loop.
Thermal resistor error.
Error comes from pump or flow-type water volume control. Check and repaired or replace a new one.
Upon error have been confirmed, please replace a new one.
Troubles: Compressor can‟t start.
Over current relay trip up, fuse burnt out.
Control circuit without power though.
High voltage or low voltage protection.
Coils in contactor are burnt out.
Wrong connection of phase sequence.
Water system error and flow type volume controller short connection.
Error signal delivered from wired controller.
Replace damaged assembly.
Check the wring of control system.
Reference to mention in above the parts of air suction and discharge pressure error.
Replace damaged assembly.
Re-connect and adjust the any 2 wires among 3 phases.
Check water system.
Find out the error type and carry out the corresponding measure to settle.
Midea Chiller Parts
65kW module refrigeration system sketch drawing(Fixed speed)
Midea AC Error Codes and Troubleshooting
Midea Chiller Service Manual PDF
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