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Samsung Gen 6 fault E440

Heating operation is not available since the outdoor air temperature is over 35 degrees

Heat pump

What it means

Heating operation blocked due to high outdoor air temperature.

Likely causes

  1. Incorrect operation setting state
  2. Faulty temperature sensor
  3. Outdoor air temperature over 35 degrees

Where to start

  1. Check the operation setting state
  2. Check temperature sensor
  3. Check the outdoor temperature.

The full answer, free

  • The readings and component tests from the manual
  • How to put it right, step by step
  • The manual page for this fault (page 55), 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 Samsung manual for the Gen 6. Check the model on the data plate before you order parts.

Other Samsung Gen 6 fault codes