Light Bulb; Light Bulb Assembly; Defrost Timer; Light Switch - Maytag ATB1821AR series Service Manual

Disassembly Procedures
To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test
procedures require power to be connected. Discharge capacitor through a resistor before attempting to service.
Ensure all ground wires are connected before certifying unit as repaired and/or operational.
Light Bulb Cover (some models)
1. To remove the light cover squeeze and unsnap the
light cover.
2. Remove light bulb.

Light Bulb Assembly

1. Remove the light cover as descibed above. Retain all
parts.
2. Remove light bulb.
3. Models with Fresh Food air tunnel only. Remove the
screw cover insert located above the center
cantilever rail. Remove the support spacer located
behind the screw cover insert.The fresh food air
tunnel can then be slid downward. This allows space
between the control housing and tunnel to ease
diassembly.
4. Remove two screws holding the Control Housing
Assembly to Fresh Food ceiling.
5. Remove Control Housing Assembly by dropping it
down and sliding it forward to release drain tube from
back wall.
6. Disconnect wire harness plug from ceiling.
7. On back side of Control Housing Assembly
disconnect wires from light bulb socket.
8. Squeeze tabs on back side of Light Bulb Socket to
release it from housing.

Defrost Timer

1. After following procedures 1-6 on removing light bulb
assembly.
2. While holding the timer push the tab at the rear of the
housing to release the timer and lift the timer out of
housing.
3. Disconnect plug from timer.
4. Reverse procedure to reassemble.

Light Switch

1. After following procedures 1-6 on removing light bulb
assembly.
2. Disconnect wires from light switch.
3. Squeeze tab to release light switch from light
assembly.
4. Reverse procedure to reassemble.

Cold Control

1. After following procedures 1-6 on removing light bulb
assembly.
2. Disconnect wires from Cold Control.
©2005 Maytag Services
!
WARNING
3. Release Cold Control by pushing down on the tabs
that hold it in the control housing, slide the control
past the clips to remove control.
4. Remove Capillary Tube from assembly.
5. Reverse procedure to reassemble.
Freezer Compartment
Evaporator Cover
NOTE: Freezer compartment should now be empty and
walls should be clear of anything that will
obstruct removal of back panel.
1. Remove 4 screws from Evaporator Cover.
2. Pull forward to reveal wiring, disconnect harness plug
attached to rear wall.
3. Remove Evaporator cover.
4. Reverse procedure to reassemble.

Freezer Temperature Control

1. Follow instructions
2. Remove Evaporator cover.
3. On backside of Evaporator cover squeeze tabs to
release the Freezer Air Tunnel from the cover.
4. Reverse procedure to reassemble.

Evaporator Fan, Evaporator Motor

1. Follow instructions for removing Evaporator Cover.
2. Remove screws that anchor evaporator fan bracket to
Evaporator Cover. Pull fan and bracket away from
Evaporator Cover.
3. Free fan bracket from wiring harness by
disconnecting wires to motor.
4. Carefully pull the evaporator fan blade off motor shaft.
5. Separate bracket and motor by removing screws from
retainer bracket to release motor from bracket.
6. When reinstalling motor reference position of
terminals of new motor the same as old motor.
7. Reverse procedure to reassemble.

Defrost Terminator (Thermostat)

1. Follow instructions for removing Evaporator Cover.
2. Terminator is fastened to the suction line with a spring
clip.
3. Snap terminator from tubing and unplug harness from
back wall of cabinet.
4. Remove terminator from unit.

Defrost Heater

1. Follow instructions for removing Evaporator Cover.
2. Pull the evaporator away from back wall of cabinet.
3. Disconnect plugs from both sides of heater plugging
into back wall of cabinet .
4. Tilt the evaporator up taking care not to kink heat
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