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Samsung Heat pump fault E507

Comp down due to high pressure or high pressure switch open

Heat pump

What it means

Compressor shut down due to detected high pressure condition or the high pressure switch opening.

Likely causes

  1. Excessive refrigerant pressure
  2. High pressure switch fault
  3. Blocked condenser/heat exchanger
  4. Fan failure causing poor heat rejection

Where to start

  1. Check system refrigerant pressure
  2. Check high pressure switch continuity

The full answer, free

  • The manual page for this fault (page 84), 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 Heat pump. Check the model on the data plate before you order parts.

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