Mitsubishi Electric CITY MULTI PUMY-P112VKM6 Service Manual page 41

1500 (U7): Superheat due to low discharge temperature trouble
Diagnosis of failure
Continued from the previous page.
Is the resistance detected?
Check the voltage and appearance of the indoor
controller board.
Is the voltage normal?
Is it free from any trace of overheating
or burning?
Check the 63HS voltage.
Is the voltage(*) detected?
*For the voltage, refer to "How to check the components".
OCH790 _41
No
Yes
No
Yes
No
Yes
Replace the indoor LEV.
Replace the indoor controller board.
Replace the 63HS.
Replace the outdoor multi controller circuit
board.
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