Midea MSV1-09HRDN1, Service Manual

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Service manual
13.3 Resetting phenomenon often occurs during operation
(That is automatically entering to the status when power is on.)
The reason is that the instantaneous voltage of main chip is less than 4.5V. Check according to the
following procedure:
Resetting phenomenon often occurs during operation .
After changing indoor PCB , check if the failure realease .
Yes
After changing indoor fan motor , check if the failure realease .
Yes
YES
Yes
Power supply circuit has problems .
Indoor PCB is defective.
13.4 Operation lamp flashes and Timer lamp off
Is connector connection good ?
Is voltage being applied to the fan motor ?
Fan motor is defective
Yes
No
Repair the connector .
No
Indoor PCB is defective.
13.5 Operation lamp flashes and Timer lamp on
Is connector connection good ?
Replace the sencor ,
No
Repair the connector .
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