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Freezer Defrost Heater
The defrost heater is located on the sides and
bottom of the evaporator.
The defrost heater wiring is attached to the
evaporator with 4 plastic wire ties and the heater is
held in 4 slots) at the bottom of the evaporator.
To remove the defrost heater:
Remove the 4 plastic wire ties.
1.
Remove the foam air block.
2.
3. Peel off the re
fl
ective tape.
4. Carefully bend open the tabs that form the 4
slots and pull down the heater.
5. Carefully pull the evaporator out and up to
remove the heat conducting tab from the drain
inlet in the recess.
Tab
Heat Tab
Refl ective Tape
Slot
Foam Air Block
(
Continued next page
)
6. Using a small
fl
at bladed screwdriver, reach
behind the drain tray and bend straight the 2
lock tabs that hold the evaporator to the drain
tray.
7. Separate the drain tray from the evaporator.
8. Remove the defrost heater from the evaporator.
Note:
When installing the heater to the drain tray,
be sure heat tab is inserted into the drain tray outlet.
Rear View of Drain Tray
Lock Tab (1 of 2)
Duct Heater
The duct heater is attached to the inside of the
freezer evaporator cover. The duct heater prevents
water from freezing and blocking air
fl
ow to the ice
room.
The duct heater is in a parallel circuit with the
freezer defrost heater. The heaters are in series with
the bimetal defrost safety thermostat. Both heaters
operate at 120 VAC when the freezer defrost circuit
is energized by the main control board and the
defrost safety thermostat is closed.
