Error code

Mitsubishi Electric PUH code F9

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Meaning

2 or more connectors open Abnormal if two more out of connector (63L, 51CM) circuits are open for 3 minutes continuously after power on.

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Possible causes

(1) Disconnection or contact failure of connector (63L, 51CM) on outdoor controller board (2) Disconnection or contact failure of (63L, 51C) (3) Defective (63L, 51C) (defective parts) (4) Defective outdoor controller board

Solution

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