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7. Remove the 2 ground wires from the top right
corner of the heater assembly.
8. Remove the 3 Phillips-head screws that hold the
heater assembly in place.
Caution:
When reinstalling the indoor coil cover, be
sure to use the original short machine screw on the
top left of the indoor coil housing. Damage to the
indoor coil housing may result if the wrong screw
length is used.
Indoor Coil Cover
Evaporator
WARNING:
The evaporator fi ns are very sharp. Wear
Kevlar gloves when handling the evaporator.
11. Remove the two Phillips-head screws from both
the right and the left side of the evaporator.
Carefully lift the evaporator to clear the base
pan. Gently swing the evaporator out enough to
remove the blower wheel.
10. Lift the heater assembly up and out.
Heater Wiring Harness
RY103
6. Remove the 9 Phillips-head screws holding the
indoor coil cover in place. Remove the cover.
9. Disconnect
the
heater
wiring
harness.
Disconnect the black wire from the relay at
RY103 on the power supply board.
Note:
On 3800 series models, an additional 1- or 2-
pin wire harness must be disconnected.
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