Check The Outdoor Fan 12K - Friedrich VRP Series Service & Parts Manual

Check the Outdoor Fan 12k

Caution: Wait for 2 minutes after removing power from the unit to allow capacitors to discharge before
handling the Inverter Board, disconnecting leads or connectors, or taking ohm readings.
1. Remove Power from the Unit.
2. Check Fuse located in wiring between the Inverter Board and Outdoor Fan Motor. Replace fuse if open.
3. Turn unit on.
4. Check outdoor fan connector from aiden at J8 as shown in figure below.
There are 4 wires:
Voltage for Power (Red) = 310VDC
Motor Return Voltage (White) = 15VDC
PWM (Yellow) = 0‑6.5VDC (Oscillating)
Feedback (Blue) = VDC (Oscillating)
Ground (Black)
91
COMPONENT TESTING
Figure 605 (Outdoor Fan)