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38MGRBQ: Service Manual
DIAGNOSIS AND SOLUTION (CONT)
E0/ EC 51 (Outdoor unit EEPROM parameter error) diagnosis and solution
ERROR CODE
MALFUNCTION DECISION
CONDITIONS
SUPPOSED CAUSES
Troubleshooting
EEPROM: a type of memory. The contents can be erased and reprogrammed using a pulsed voltage (see figure 39).
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
E0/ EC 51
PCB main chip does not receive feedback from EEPROM chip
Installation mistake
Faulty PCB
Outdoor EEPROM malfunction
Power off, then restart the
unit 3 minutes later
Replace the outdoor main PCB
Fig. 39 — EEPROM
Yes
45
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