Carrier 38MBR series - Page 23

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DIAGNOSIS AND SOLUTION (CONT)
Table 14—Overload Current Protection Diagnosis and Solution (F0)
Error Code F0
Malfunction decision conditions An abnormal current rise is detected by checking the specified current detection circuit.
Supposed causes
S Power supply problems
S System blockage
S PCB faulty
S Wiring mistake
S Compressor malfunction
Yes
re
No
.
No
No
No
Check the power supply
Check for system blockage
Check the compressor
resistance values
Check the connections and wires
Check the reactor
Replace the outdoor main PCB
Correct the connections or
replace the wires
Replace the compressor
Clear the blockage
Stop the unit
No
Yes
Yes
Yes
No
Yes
Replace the outdoor unit