High Pfc Module Protection (Odu P6) (Only For A-Vmh36Qc-1) - Heat Controller A-VMH18DC-1 Service Manual

Heat Controller, Inc.

9.3.2.11 High PFC module protection (ODU P6) (Only for A-VMH36QC-1)

PFC module protecton
Check whether the connecting line
between main board and the PFC
module is connected tightly
Check whether the voltage range
of P-N on IPM module is normal?
DC277-356V for 18-27KBtu/h;
DC277-410V for 36KBtu/h
Check whether the inductance
of PFC module is good? If the
inductance is good, the resistance of
the two ports is 0
Replace the PFC module
9.3.2.12 Inverter compressor drive protection (ODU P7)
The trouble shooting is same process as the IPM module protection, trouble shooting.
Refer to this section.
No
Yes
No
Yes
No
No
Yes
VMH SerieS
Connect it tightly,
check normal or not
Replace the outdoor main board
Replace the inductance
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Service Manual