Mitsubishi SRK50ZHX-S Technical Manual page 34

(4) Troubleshooting procedure (If the air conditioner runs)
Check the self-diagnosis display.
Is an error code displayed by
the self-diagnosis function?
Identify the faulty component by using the check
procedure corresponding to the content of the trouble.
Replace the faulty component, then perform an
operation check.
Note (1) Even in cases where only intermittent stop data are generated, the air conditioning system is normal. However, if the same protective operation recurs
repeatedly (3 or more times), it will lead to customer complaints. Judge the conditions in comparison with the contents of the complaints.
Confirm the contents of the customer complaint.
NO
The cause of the trouble can
be specifically identified.
See page 32.
NO
YES
Eliminate the cause of the trouble and perform an
operation check.
Using the Service Mode, access the self-diagnosis
displays generated in the past.
YES Is there a history of self-
diagnosis display items?
Using the Service Mode, access the stop history due
to protection control generated in the past.
YES
Is there a history of stops due
to protection control?
The air conditioning system is operating normally.
31
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YES
See pages 33~36.
NO
See pages 33~36.
(1)
NO