Diagnosis And Solution - ComfortStar CZP09CD Service Manual

17.4 Diagnosis and Solution

17.4.1 EEPROM parameter error diagnosis and solution
Error Code
Malfunction conditions
Potential causes
Trouble shooting:
EEPROM: a type of read-only memory. The contents can be erased and reprogrammed using a
pulsed voltage. To locate the EEPROM chip,
Indoor PCB
Note: The two photos above are only for reference purposes only. The design of the devices
depicted may vary by model.
E0/ EH 00/EH 0A/F4/ EC 51
Indoor or outdoor PCB main chip does not receive feedback from
EEPROM chip.
Installation mistake
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Faulty PCB
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194
Outdoor PCB