Outdoor Power System / Compressor Protection

What does 5-time blink 2.5-second OFF mean?

This fault is triggered when the compressor stops three consecutive times within one minute of startup due to overcurrent protection or startup failure protection. It points to significant issues within the outdoor unit's power delivery, compressor, or refrigeration system. Leaving this unresolved risks severe damage to the compressor and other critical components.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Inspect the compressor for signs of overheating, unusual noises, or visible damage; consider measuring compressor winding resistance if applicable.

2. 4

   Consult the outdoor unit service manual's 'How to check of inverter/compressor' section for detailed diagnostic procedures.

3. 5

   Troubleshoot the inverter P.C. board according to the outdoor unit service manual if other issues are not identified.