Error code

Mitsubishi Electric PUHY code 4230

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Meaning

Heatsink overheat protection (Detail code 125): When the heat sink temperature (THHS) remains at or above TOH is detected. models TOH INV20Y 105°C Using INV30YC 94°C | DCL temperature fault (Detail code 126)(outdoor unit): When DCL temperature that equals or exceeds 170˚C is detected (applicable to INV30YC only)

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Possible causes

(1) Fan board failure (2) Outdoor unit fan failure (3) Air passage blockage (4) THHS failure 1) (1) Fan inverter board fault (2) Outdoor unit fan fault (3) DCL temperature sensor connector contact failure (4) DCL error

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