Voltage/Amperage Related Diagnostics -Odf Rule Out; Voltage/Amperage Related Diagnostics - Mcs Operational Lights - Friedrich VRP12K Service And Parts Manual

Voltage/Amperage Related Diagnostics –ODF Rule Out
The Outdoor Fan Motor (ODF), like the Compressor, is
a BLDC Motor. Troubleshooting this component is the
same as the compressor.
Ohm at the connector at the MCS first for the same
resistance (+/‑0.1) across any two phases, then check
each phase to ground.

Voltage/Amperage Related Diagnostics - MCS Operational Lights

169
TROUBLESHOOTING
Operation LED
Processor A
Processor B
If a fault LED is
produced on motor
engagement, rule out
firmware, then motor.
Lastly, change the
MCS board.