Resetting Phenomenon Often Occurs During Operation; Operation Lamp Flashes And Timer Lamp Off; Operation Lamp Flashes And Timer Lamp On - Midea MSQ-07CR Service Manual

The reason is that the instantaneous voltage of main chip is less than 4.5V. Check according to the following procedure:
After changing indoor fan motor, check if the failure realease.
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13.4.

Resetting phenomenon often occurs during operation.

(That is automatically entering to the status when power is on.)
Resetting phenomenon often occurs during operation.
Yes
After changing indoor PCB, check if the failure realease.
Yes
YES
Power supply circuit has problems.
13.5.

Operation lamp flashes and Timer lamp off.

Is connector connection good?
Is voltage being applied to the fan motor?
Yes
Fan motor is defective
13.6.

Operation lamp flashes and Timer lamp on.

Is connector connection good?
Replace the sencor,
Service manual
Yes
Indoor PCB is defective.
No
Repair the connector.
No
Indoor PCB is defective.
No
Repair the connector.