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Samsung Heat pump fault E916

Mixing sensor short/open

Heat pump

What it means

Water mixing sensor has a short circuit or open circuit condition

Likely causes

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

Where to start

  1. Check mixing sensor connector for loose connections
  2. Measure mixing sensor resistance
  3. Inspect sensor wiring for damage or breaks

The full answer, free

  • 4 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 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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