Carrier 40MPHA - Page 34

34
DIAGNOSIS AND SOLUTION (CONT)
F0 (Overload current protection diagnosis and solution)
Description: An abnormal current rise is detected by checking the specified current detection circuit.
Recommended parts to prepare:
S Power supply problems
S System blockage
S Faulty PCB
S Wiring mistake
S Compressor malfunction
Troubleshooting and Repair:
Check the power supply
Do any exist?
Are they within acceptable
parameters?
Are they properly connected ?
Is it in working order ?
Replace the outdoor unit
Is it in working order ?
Check system for blockages .
YES
Stop the unit .
NO
Clear the blockageNO
Check the compressor resistance values
YES
Replace the compressor .NO
Check the connections and wires
YES
Ensure proper connections or
replace the wires .
NO
Check the reactor
YES
YES
Replace outdoor PCB
NO