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DIAGNOSIS AND SOLUTION (CONT)
Table 13—EEPROM Parameter Error Diagnosis and Solution (E0/F4)
Error Code E0/F4
Malfunction conditions Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip.
Potential causes
S Installation mistake
S Faulty PCB
Troubleshooting
Power off, then restart the unit
2 minutes later
Replace the indoor/outdoor
main PCB
Yes
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.
Fig. 15 – Outdoor PCB
NOTE: Fig. 15 is for illustration purposes only and may differ from your actual unit.
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