Maytag ATB1821AR series Service Manual page 21

Troubleshooting Chart
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.
Symptom
Refrigerator section too cold
Freezer and refrigerator sections too
warm
Freezer section too cold
Unit runs continuously
Unit runs continuously. Temperature
normal.
Noisy operation
©2005 Maytag Services
!
WARNING
Possible Causes
Refrigerator temperature control set
too cold
Refrigerator airflow not properly
adjusted
Temperature controls set too warm
Poor door seal
Dirty condenser or obstructed grille
Faulty control
Refrigerant shortage or restriction
Ice on evaporator
Freezer temp control set too cold
Airflow restricted between freezer
and fresh food compartment
Temperature control set too cold
Dirty condenser or obstructed grille
Poor door seal
Interior light remains on
Faulty condenser fan or evaporator
fan
Faulty control
Refrigerant shortage or restriction
Refrigerant overcharge
Air in system
Ice on evaporator
Loose flooring or floor not firm
Cabinet not level
Tubing in contact with cabinet, other
tubing, or other metal
Drip pan vibrating
Fan hitting another part
Worn fan motor bearings
Compressor mounting grommets
worn or missing. Mounting hardware
loose or missing
Free or loose parts causing or
allowing noise during operation
21
Corrective Action
Adjust refrigerator temperature
control.
Check air flow.
Reset temperature controls.
Level cabinet. Adjust hinges.
Replace gasket.
Check condenser and grille. Clean.
Test control. Replace if failed.
Check for leak or restriction. Repair,
evacuate and recharge system.
Adjust freezer temperature control.
Remove restriction
Adjust temperature control.
Check condenser and grille. Clean.
Level cabinet. Adjust hinges.
Replace gasket.
Check switch. Replace if necessary.
Check fan and wiring. Replace if
necessary.
Test control. Replace if failed.
Check for leak or restriction. Repair,
evacuate and recharge system.
Check for overcharge. Evacuate and
recharge system.
Check for low side leak. Repair,
evacuate and recharge system.
See "Ice on evaporator".
Repair floor or brace floor.
Level cabinet.
Adjust tubing.
Adjust drain pan.
Ensure fan properly aligned and all
attaching hardware and brackets are
tight and not worn. Tighten or
replace.
Check motor for loss of lubricant or
worn bearings. Replace if necessary.
Tighten hardware. Replace
grommets if necessary.
Inspect unit for parts that may have
worked free or loose or missing
screws. Repair as required.
16025860