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Samsung Heat pump fault E906

Outdoor EVA in sensor error

Heat pump

What it means

Outdoor unit liquid refrigerant sensor has open or short circuit condition

Likely causes

  1. EVA IN sensor wiring disconnected
  2. EVA IN sensor short circuit
  3. EVA IN sensor open circuit
  4. Sensor connector corrosion or damage

Where to start

  1. Check outdoor unit EVA IN sensor connector
  2. Measure sensor resistance
  3. Inspect sensor wiring for damage

The full answer, free

  • How to put it right, step by step
  • The manual page for this fault (page 85), 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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