Kaisai KMK-60RY1, Service Manual

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M thermal Split
70 202004
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4.13 H7 Troubleshooting
Digital display output 4.13.1
Description 4.13.2

Abnormal main circuit voltage.

Split stops running.

Error code is displayed on outdoor unit main PCB and user
interface.
Possible causes 4.13.3

Power supply voltage not within 90%~110% of rated voltage.

Outdoor unit main PCB is damaged.
Procedure 4.13.4
H7
Power supply voltage is not within
90%~110% of rated voltage
Yes
Provide normal power supply
No
Replace outdoor unit main PCB
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