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Inside View
Damper Assembly
Damper Assembly
Run diagnostic mode
10
to test the damper. (
See
Diagnostics and Service Information
.)
The damper assembly regulates the cool air
supplied to the fresh food section. It is located
inside the fan housing.
The damper is cycled based on inputs from
the fresh food and freezer thermistors.
The damper opens when the fresh food
thermistor temperature is 1.5 degrees above
the logic board set point, and closes when it is
within that range.
The damper opens anytime the refrigerator
door is open except during defrost.
The damper cycles 24 times (cycles open and
closed every 10 seconds for 4 minutes) after
defrost when the compressor fi rst comes on.
Check for approximately 18 VDC at K6 on the
power supply board between pin #1 and pin #2
(damper in the closed position), and pin #2 and
pin #3 (damper in the open position). Check for
resistance of approximately 10
Ω
at K6 on the
power supply board between pin #1 and pin #2
and pin #2 and pin #3.
Damper Capacitors
The damper capacitors help to quite the damper
door when it is opening and closing. The damper
capacitors are connected to the power supply
board located in the sliding tray above the
machine compartment (see
Power Supply Board
for access).
•
•
•
•
Fan Housing
If the damper door is chattering or knocking when
it is opening and closing, replace the capacitors.
Run diagnostic mode
10
to test the damper. If the
problem persists, replace the damper assembly.
Damper Capacitors
To remove the damper assembly:
1. Remove the evaporator cover. (See
Evaporator Cover.
)
2. Remove the fan housing. (See
Evaporator
Fan.
)
3. The damper assembly is held in place by
1 front tab and 3 channel guides. Pull the
damper assembly forward past the front tab
until it stops.
Damper Door
Front Tab
Channel Guides
Channel Guide
(
Continued next page
)
