TradeAssistIQHome

Midea R32 M thermal Arctic Mono fault EE

Hydronic system EEPROM error

Heat pump

What it means

Hydronic system EEPROM error (serial number 15). Displayed on user interface and hydronic system main PCB.

Likely causes

  1. EEPROM fault on hydronic system main PCB
  2. Hydronic box main PCB fault
  3. Damaged cables between hydronic box main PCB and outdoor unit main PCB
  4. Outdoor unit main PCB fault
  5. Incorrect or abnormal input power supply (N or L)
  6. Main board fuse damaged/blown

Where to start

  1. Check whether the input voltage of the hydronic box main PCB CN501 and CN502 is 220V
  2. Check whether the voltage of CN27 and CN28 on the outdoor unit main PCB is 220V
  3. Check whether the input voltage N or L of the outdoor unit main PCB is 220V

The full answer, free

  • 5 more checks in order
  • The readings and component tests from the manual
  • How to put it right, step by step
  • The manual page for this fault (page 66), right under the answer
Ask about EE freeCreate a free account

Safety: Isolate the outdoor unit and any backup heater, and give the inverter capacitors time to discharge before you open the electrics. Anything on the refrigerant circuit needs F-gas certification.

From the Midea manual for the R32 M thermal Arctic Mono. Check the model on the data plate before you order parts.

Other Midea R32 M thermal Arctic Mono fault codes