Carrier 42/38KCR024713 Service Manual page 30

Including the indoor room, indoor evaporator and outdoor condenser temperature sensor.
Is connector connection good?
10.7 Outdoor unit protects
Check if the power supply is good
Change outdoor PCB and check if the error is still
exit
mpressor failure
10.8 EEROM error
EEROM error, indoor PCB is defective, change indoor PCB or change EEPROM if it's changeable.
10.9 Indoor unit communication error.
Check the if the signal wire is well connection
Change indoor PCB and check if the error is still
exit
Outdoor PCB failure, change outdoor PCB
28
10.6 Temperature sensor error.
Replace the sencor,
Yes
Yes
Ye
s
o C
Service manual
No
Repair the connector.
Power supply failure
Outdoor PCB failure
Connect the signal wire well or change
the signal wire if it's the problem of the
wires.
Indoor PCB failure
No
No
No
No