GE PFSS5NJWSS User Manual page 11

Evaporator Fan (cont.)
Yellow Wire (Signal)
The yellow wire is the input wire from the main control board. The main control
board provides 6.5 VDC effective voltage for low speed, 8 VDC effective voltage
for medium speed, and 9.5 VDC effective voltage for high speed. The fan
operates in low speed only when the fresh food thermistor is satisfied.
Note: When testing these motors:
• You cannot test with an ohmmeter.
• DC common is not AC common.
• Verify 2 voltage potentials:
a. Red to white - power for internal controller (13.7 VDC)
b. Yellow to white - power for fan (5.5 to 12 VDC)
• Observe circuit polarity.
• Motors can be run for short periods using a 9 volt battery. Connect the white
wire to the negative (-) battery terminal only. Connect the red and yellow wires
to the positive (+) battery terminal.
11
mabe CONFIDENTIAL AND PROPRIETARY INFORMATION-NOT FOR PUBLIC DISCLOSURE. January 2008