ā 32 ā
ORANGE
ORANGE ORANGE
PINK
OVER TEMPERATURE
THERMOSTAT
J7-9
MAIN CONTROL BOARD
PINK
R=265
R=472
AIR DUCT HE
ATER
ORANGE
NEUTRAL OUTPUT
SUPPLY DUCT HEATER
J8(AIR/SUPPLY)
DUCT HEATER)
BLACK
Air Duct and Supply Duct Heaters
Air duct and supply duct heaters are connected in
parallel and located inside the left-side fresh food
door.
Air Duct and Supply Duct heaters will come on
with abnormally high door-open time and high
humidity. (Abnormal = approximately 70 fresh food
door openings for 12 seconds or more in a 16-hour
period.)
Applied voltage to this circuit can be tested at the
main control board J8 to J7-9.
To replace the air duct and supply duct heaters, it is
necessary to replace the left-side fresh food door.
Duct Port Heater
The duct port heater is located inside the left-side
fresh food door around the ice compartment port
holes.
The duct port heater cycles on temperatures and
ice compartment conditions. (Mid-settings = heater
on time approximately 30%)
Applied voltage to this circuit can be tested at the
main control board J7-5 to J7-9.
To replace the duct port heater, it is necessary to
replace the left-side fresh food door.
ORANGE
ORANGE
NEUTRAL OUTPUT
ORANGE ORANGE ORANGE
PINK
J7-9
MAIN CONTROL BOARD
PINK
J7-5
WHITE
WHITE
ORANGE
R=1102
PINK
OVER TEMPERATURE
THERMOSTAT
DUCT PORT
HEATER
RED/YELLOW
(Continued next page)
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