COMFORT-AIRE Century VMH-SV Series Service Manual page 120

TS01-IDU: Indoor EEPROM parameter error diagnosis and solution
Description: Indoor PCB main chip does not receive feedback from EEPROM chip.
Recommended parts to prepare:
• Indoor 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 indoor 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 indoor PCB is shown in the following image:
Note: This pictures are only for reference, actual appearance may vary.
 Troubleshooting 
Troubleshooting