38MBR: Service Manual
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20
EEPROM Parameter Error - Diagnosis and Solution (E0/F4)
Troubleshooting
EEPROM:
A read-only memory whose contents can be erased and reprogrammed using a pulsed voltage. For the location of the EEPROM chip, refer
to the Fig. 18.
Fig. 18 — Outdoor PCB
Figure 18 is for illustration purposes
only
and may differ from your actual unit.
Error Code
E0/F4
Malfunction decision conditions
Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip.
Supposed Causes
• Installation mistake
• PCB faulty
Power
OFF
.
Wait 2 minutes then power ON the unit.
Replace the indoor /outdoor main PCB.
.
Yes
