R410A DC Inverter VRF V4 Plus W Series 50Hz
MCAC-VTSM-2016-04
220 Troubleshooting
low-pressure accumulator.
3. Add oil to the compressor from the
discharge pipe
.
4. The type of the oil is FVC-68D, make sure the type of the oil is right because different compressor need
different type of oil, if the type is wrong there will be various kinds of problems.
3.14 C4: TSC temperature too high or too low protection; F0: C4 protection appears 3 times in 60
minutes
F0 error will display when system appear 3 times C4 protection in 60 minutes, it cannot resume automatically,
and it can resume only by restarting the machine. The error should be promptly investigated and handled, so
as not to cause further damage.
Replace the temperature sensor
C4/F0
Max(TSC1, TSC2)
>
52
o
C or
Min(TSC1, TSC2)
<
4
o
C
The
maximum
outlet
water
temperature too high or minimum
outlet water temperature is too low
TSC1
or
TSC2
temperature
sensor fault
Outdoor main PCB is damaged
Adjustment of water temperature
and water flow
Replace the outdoor main PCB
No
No
No
Yes
Yes
Yes
The discharge pipe is connected to
the oil pool of the compressor by the
inner oil balance pipe, add oil from
the discharge pipe with a funnel