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Midea Heat pump fault H5

Ta room temperature sensor error

Heat pump

What it means

Ta room temperature sensor error. Sensor is located inserted on the PCB of the User Interface.

Likely causes

  1. Ta room temperature sensor failure inserted on User Interface PCB
  2. Set temperature reached

Where to start

  1. Locate sensor inserted on PCB of User Interface
  2. Measure T1 (leaving water temperature) and compare to T1S (set temperature) plus dT1SC hysteresis
  3. Check T1Stop operating limit value

The full answer, free

  • 6 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 113), right under the answer
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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 Heat pump. Check the model on the data plate before you order parts.

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