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8.4 Diagnosis and Solution

8.4.1 Indoor unit trouble shooting

8.4.1.1

Indoor unit EEPROM parameter error

diagnosis and solution.

Malfunction conditions

Indoor or outdoor PCB main chip does not receive feedback

from EEPROM chip.

Potential causes

●

Installation mistake

●

Faulty PCB

Trouble shooting:

Yes

Replace the indoor/outdoor

main PCB.

Power off, then restart the

unit 3 minutes later. Does

a problem still remain?

EEPROM: a type of read-only memory. The contents can be erased and reprogrammed using a pulsed

voltage. To locate the EEPROM chip,.

Midea MCH4U-36PHH2 User Manual

Questions and Answers: