Frigidaire LGUB2642LF2 Service Manual page 128

Component Teardown
Evaporator Housing Removal - continued
The liner has a tab that extends down to the drain tube to
conduct heat during defrosts to melt any ice accumulation
in the drain tube. There is also a piece of aluminum tape
that wraps onto the front wall of the Housing. The tape
conducts heat to the back of the Auger Motor to melt any
ice off of it during defrosts.
push out
1. After completing the Air Handler Removal procedure,
connector
push the harness connector out of the clip on the front of
the Housing. Figure 6-64.
2. Pull the harness up and out of the "L" shaped slot on
the Housing.
3. Carefully pull the Housing outward so that the drain
tube is free of the drain conduit, and then downward to
remove it from the Evaporator. Note: If there is frost
buildup on the Evaporator, the housing will be tighter, and
you may need to hold the refrigerant lines with one hand
while removing the Housing to avoid damage to the lines.
Figure 6-64
Heater and Bimetal Thermostat Removal and
Replacement
Disconnect power from the unit before performing this
procedure.
The Defrost Heater is a contact heater. Its rating is 70W
@ 115V. The resistance through the heater should be
189Ω ± 7.5%. The heater is pressed into channels in the
front face of the Evaporator. There are wire ties that are
wrapped around the heater and the Evaporator tubing to
hold the heater in place. The Bimetal Thermostat is wired
in series with the heater. The Thermostat will open at
approximately 47°F and close at approximately 25°F. The
Heater and Thermostat must be replaced together. The
replacement Heater and Thermostat will come as a com-
plete assembly.
1. After completing the Evaporator Housing Removal
procedure, cut the wire ties that hold the Heater to the
Evaporator.
2. Unclip the Thermostat from the refrigerant line.
Figure 6-65
3. Carefully spread the Heater front to rear enough to the
clear of the Evaporator, and then pull it down and to the
right off the evaporator.
4. To replace the Heater and Thermostat Assembly, care-
fully spread the heater enough to be clear of the Evapora-
tor and slip it onto the Evaporator from the right side.
5. Align the heater so that it sits in the channels in the
front of the Evaporator as shown. It is not necessary to
reattach the wire ties.
6. Snap the Thermostat onto the rear-most refrigerant
line as shown. Figure 6-65.
IMPORTANT: Failure to connect the Thermostat as
shown could cause the Thermostat to interfere with the
Fan blades, creating noise or an inoperable fan.
6-22