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DIAGNOSIS AND SOLUTION (CONT)
Error Code
Malfunction conditions
Potential causes
Troubleshooting
EEPROM: A read−only memory whose contents can be erased and reprogrammed using a pulsed voltage. For the location of EEPROM
chip, refer to the following images.
NOTE: Fig. 16 is for illustration purposes only and may differ from your actual unit.
Table 17—EEPROM Parameter Error Diagnosis and Solution (E0/F4)
E0/F4
Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip.
S
Installation mistake
S
Faulty PCB
Power off, then restart the unit
2 minutes later
Replace the indoor/outdoor
main PCB
Fig. 16 – Outdoor PCB
Yes
20
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