GE Profile PGCS1RKZ

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Temperature can cause some fan speed variation.
Fan speed can vary +/- 5%, depending on the
temperature, with higher temperatures causing
slightly higher speeds.
High Speed (10.5 VDC measured)
Medium Speed (7.5 VDC measured)
Low Speed (5.5 VDC measured)
10.5 VDC
7.5 VDC
5.5 VDC
13.6 VDC
0 VDC
0 VDC
0 VDC
13.6 VDC
13.6 VDC
Super High Speed (12.0 VDC measured)
12.0 VDC
13.6 VDC
0 VDC
BLUE
WHITE/SILVER (COMM)
YELLOW/BLACK
YELLOW
+12V RED
COND FAN
EVAP FAN
RED
YELLOW
WHITE
RED
YELLOW
BLUE
WHITE
J2-1
J2-3
J2-4
J2-5
J2-8
MAIN CONTROL BOARD
Supply voltage from the main control board (J2-8 to
J2-3) remains at a constant 13.6 VDC.
The speed of the fan is controlled by the signal
voltage output from the main control board (J2-5
to J2-3). Voltage output from the control board to
the fan is 13.6 VDC; however, to regulate the speed
of the fan, the main control board uses pulse width
modulation (PWM).
When operating, voltage is sent in pulses (much like
a duty cycle) as opposed to an uninterrupted fl ow.
This pulsing of 13.6 VDC produces effective voltage
being received at the motor, that is equivalent to a
reduction in voltage.
Fan speed is selected and maintained by the main
control board regulating the length and frequency
of the 13.6 VDC pulse.
Voltage can be checked on the fan harness:
• Supply voltage (red and white wires) = 13.6 VDC
• Signal voltage (yellow and white wires) = 5.5 -
12 VDC, depending on speed of fan.
2. Carefully pull the water valve out from the
cabinet.
3. Disconnect the 2 wire harnesses to the inverter.
4. Remove the 1/4-in. hex-head screw and the
inverter ground wire from the cabinet.
Inverter
The inverter is accessed from the back of the
refrigerator and is located on the left side of the
compressor behind the water valve. The water valve
must be removed to access the inverter.
To remove the inverter:
1. Remove the 1/4-in. hex-head screw that holds
the water valve to the cabinet.
Note: The inverter is attached to the compressor by
a lip above the compressor terminals, a tab (located
at the bottom rear corner), and a Phillips-head
screw.
Water
Valve
Disconnect
Inverter
Ground Wire
Disconnect
Inverter
(Continued next page)