Symbol Diagnosis Diagnosis method
F99 DC peak detection CU-2E:
If the current level exceeds 22.5A after startup, the compressor stops, and it is restarted 3 minutes later. When
this occurs on 7 consecutive occasions, operation stops, and the trouble display appears.
CU-3E/4E:
When "Output current trouble", which occurs when the prescribed current level is exceeded, has occurred on
16 consecutive occasions, operation stops, and the trouble display appears.
<Diagnosis checkpoint>
1. Check whether the compressor is defective (locked up or shorted winding). Check the outdoor unit control
P.C. Board.
86
CS-ME7CKPG / CS-ME10CKPG / CS-ME12CKPG / CS-ME14CKPG / CS-ME18CKPG / CU-2E15CBPG / CU-2E18CBPG / CU-3E23CBPG / CU-4E27CBPG
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