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Error code

Mitsubishi Electric klima code U4

No approved translation for this record yet; showing the original text.

Meaning

(PAC-SK52ST) (Refer to 9-10.) Heatsink thermistor(TH8) is in the power module. Thermistors Symbol TH3,TH32

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Possible causes

(1) Disconnection or contact failure of connectors ( Outdoor controller circuit board: ) TH3, TH32, TH33, TH7/6 Outdoor power circuit board: CN3 (2) Defective thermistor (3) Defective outdoor controller circuit board Name <Suction>, <Ref.

Solution

Solution steps are not shared for faults that may be dangerous.

No do-it-yourself solution is given for this fault. For your safety, call an authorised service.

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