Mars DVH Series - Page 41

Service Manual - DVH 09/12/18/24 SF Series
Service Manual - DVH 09/12/18/24 SF Series
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9.3.6 Overload current protection diagnosis and solution (F0)
Error Code
F0
Malfunction conditions
An abnormal current rise is detected when checking the
specified current detection circuit.
Possible causes ● Power supply problems.
● System blockage
● PCB faulty
● Wiring error
● Compressor malfunction
Troubleshooting:
Check the power supply. Is it
normal?
Check the connections and
wires .Is it well connected?
Stop the unit. Check the power
supply
No
Yes
No
Correct the connections or
replace the wires.
Yes
Replace the outdoor main PCB
Yes
Check the reactor .Is it
normal?
No
Replace the reactor
Is there any blockage?
No
Yes Clear the blockage
Check the compressor
resistance values refer to the
[
Compressor checking ]. Is it
normal?
Yes
No Replace the compressor