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SERVICING
Vent Door
Shipping Screw
9. Lift up on the right side of the fan motor assembly to
release the housing.
10. Slide whole assembly to the right as you are looking
at it and lift the assembly straight up.
11. Remove the two screws securing the heater
assembly, Figure C.
12. Remove heater assembly and disconnect wires from
the heater.
Remove
Screws
FIGURE B
FIGURE C
CHECKING HEATER ASSEMBLY
1. With power off to the unit and heater, remove the
heaters in question and visually inspect the element
for broken condition.
Vent
2. Remove the wires from the element and check for
Control
Lever
continuity through the heater. If there is no continuity
the heater needs to be replaced.
DRAIN PAN VALVE (HEAT PUMP MODELS ONLY)
Vent
Control
1. Remove the chassis from the wall sleeve.
2. Remove the mounting screw and remove the drain
valve.
The drain pan operates to remove condensate from base
pan. This is a thermal operated device that opens at 40°F
and closes at 60°F.
CHECKING OPERATION OF THE DRAIN VALVE
1. Cool the valve to 40°F or below and the plunger
should open.
2. Warm the valve up to 60°F and the plunger should
close.
CAPACITOR CHECK
1. Remove front cover.
2. Remove the two mounting screws, one on each side
of the control board cover. Tilting the control panel
out, disconnect ribbon connector from control board.
DO NOT PULL ON RIBBON. GRASP THE BLACK
RIBBON CONNECTOR AND PULL GENTLY.
3. Disconnect all wiring to the capacitor. Label the wires
to ensure proper reassembly.
4. Remove the screw securing the capacitor mounting
clamp to the center partition. Remove the capacitor.
Remove
Screws
RESISTANCE CHECK
Discharge capacitor and remove wire leads.
45
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