TradeAssistIQHome

Midea R32 M thermal Arctic Mono fault H9

Zone 2 water outlet temperature sensor error

Heat pump

What it means

Error code 48. Zone 2 water outlet temperature sensor (Sensor T1B) fault detected by user interface and hydronic system main PCB.

Likely causes

  1. Temperature sensor not connected properly or has malfunctioned. Damaged hydronic system main PCB.
  2. Sensor T1B circuit fault
  3. Sensor damage or disconnection

Where to start

  1. Identify sensor type based on fault code
  2. Locate corresponding port on refrigerant system main PCB for that model
  3. Check connection at identified port

The full answer, free

  • 31 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 67), right under the answer
Ask about H9 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