Carrier 42QFD048D8S Service Manual page 88

TS01-ODU: Outdoor EEPROM parameter error or
Compressor driven chip EEPROM parameter error diagnosis and solution
Description: Outdoor PCB main chip does not receive feedback from EEPROM chip or compressor driven chip.
Recommended parts to prepare:
• Outdoor PCB
Troubleshooting and repair:
Shut off the power supply and
turn it on 2 minutes later.
Is it still displaying
NO The unit is operating normally.
the error code?
YES
Replace the outdoor main PCB.
Remarks:
EEPROM: A read-only memory whose contents can be erased and reprogrammed using a pulsed voltage.
The location of the EEPROM chip on the outdoor PCB is shown in the following image:
Note: For certain models, outdoor PCB could not be removed separately. In this case, the outdoor electric
control box should be replaced as a whole. This pictures are only for reference, actual appearance may vary.
 Troubleshooting 