Diagnosis And Solution - Carrier 40MPHA Service Manual

DIAGNOSIS AND SOLUTION

E0/F4/EA (EEPROM Parameter Error)
Description: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip.
Recommended parts to prepare:
S
Indoor PCB
S
Outdoor PCB
Troubleshooting and Repair:
Shut off the power supply and turn it
Is it still displaying the error
If the EEPROM chip is welded on main
PCB, replace the main PCB directly.
Otherwise, check if the EEPROM chip
is plugged in the main PCB
Replace the indoor /outdoor
Remarks:
The location of the EEPROM chip on the indoor and outdoor PCB is shown in Figures 15 and 16:
Fig. 15 – EEPROM Chip (Indoor Unit)
NOTE: These images are for reference only.
on 2 minutes later.
code?
YES
Is it plugged correctly?
main PCB .
NO The unit is operating normally
NO Correct the connection .
Fig. 16 – EEPROM Chip (Outdoor Unit)
23