Error code

Mitsubishi Electric PFD code 4230

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Meaning

Radiator panel overheat protection: If the cooling fan stays ON for 5 minutes or longer during inverter operation, and 100°C if THHS is detected.

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Possible causes

(1) The wiring is defective. (2) The INV boar’s fuse (F01) is defective. (3) The cooling fan (MF1) is defective. (4) The THHS sensor is defective. (5) The air passage is clogged. (6) The IPM is defective. (7) The circuit board is defective.

Solution

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