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Samsung Heat pump fault E205

Communication error between outdoor unit inv micom - fan motor micom

Heat pump

What it means

Communication error between the outdoor unit inverter micom and fan motor micom.

Likely causes

  1. Wiring fault between inverter micom and fan motor micom
  2. Damaged wiring

Where to start

  1. Check for visible damage to wiring
  2. Inspect connectors for corrosion

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 83), 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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