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The duct door motor is a DC motor used to open
the duct door. The motor receives 13 VDC from
the dispenser board when the paddle switch is
activated and 2.5 VDC to hold the door open for 5
seconds once the paddle is released.
Duct Door Motor Diagnosing
The motor has a resistance of 15 ohms. To verify
duct door motor operation, activate the paddle
switch or use Service Mode Test t5 and verify
voltage at the J5 connector on the dispenser
board. Test t5 will operate the motor for 10
seconds.
Paddle Switch Pressed
• J5
black
to J5
black
/
silver
: 13 VDC
Duct Door Motor Removal
1. Remove the dispenser board.
2. Remove the ice funnel.
3.
Use a flat-blade screwdriver to pry the duct
door motor and duct door away from the
recess.
4.
Pull the duct door off the shaft of the duct
door motor.
The duct door is used to keep ambient air from
entering the ice box. When ice is called for, the
duct door motor turns to open the duct door. The
duct door spring then return the duct door to the
closed position within 5 seconds of releasing the
paddle. If the door is not fully closing, check the
duct door spring to make sure it is not broken or
installed incorrectly.
Duct Door Removal
• Follow duct door motor removal steps.
Foamed into the dispenser door is a 100-ohm
DC heater designed to keep the recess from
condensating. The heater is in parallel with the
fill tube heater, both are controlled by the main
board.
Recess Heater Diagnosing
The recess heater can be operated using Service
Mode Test t6. Test t6 will operate the heater for
60 seconds.
J2 to J5 on Main Board
• J2 pin 8 (
red
/
silver
) to J5 pin 3 (
violet
/
white
):
13 VDC
Spring
Duct Door Motor
Duct Door
Recess Heater