Alert Code 345 — Relay O Failure

Was bedeutet 345 ?

This critical alert means the O relay on a system component has failed. Either the pilot relay contacts did not close or the relay coil did not energize.

• O relay failure
• Stage 1 failure

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1. 1

   This alert automatically clears after the fault is recovered following a reset.

2. 2

   If the error applies to specific outdoor unit models (XC20, XC25, XP20, XP25) and persists, the outdoor control may need replacement. Contact a qualified technician.