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Hitachi Yutaki M & Yutaki S fault EE

Compressor protection

Heat pump

What it means

Compressor failure. This alarm code appears when the following alarms 02, 07, 08, 45, 47 occur three times within 6 hours.

Likely causes

  1. Repeated occurrence of alarms 02, 07, 08, 45, 47 within 6 hours indicating compressor failure

Where to start

  1. Review history of alarms 02, 07, 08, 45, 47 occurrence frequency
  2. Check history of alarms 02, 07, 08, 45, 47 for repeated occurrence within 6 hours
  3. Set pump down duration

The full answer, free

  • 9 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 338), 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 Hitachi manual for the Yutaki M & Yutaki S. Check the model on the data plate before you order parts.

Other Hitachi Yutaki M & Yutaki S fault codes