Amana Refrigerator Humming or Buzzing Noise:... | appliancefaults.com

Technical Background:

The refrigerator's Main Control Unit (MCU) regulates power to various components. A buzzing sound often indicates a motor failing or a component struggling to operate due to insufficient voltage or a mechanical issue. Motors receive 120V AC unless they are DC voltage.

Symptoms:

The homeowner reports a loud humming or buzzing noise coming from their Amana refrigerator. The noise may be constant or intermittent and may be louder at certain times.

Possible Causes:

Loose compressor mounting bolts
Faulty condenser fan motor
Icemaker water valve buzzing
Evaporator fan motor obstruction or failure
Relay or overload issues on the compressor
Defective damper control

Solution:

1

Unplug the refrigerator or switch off the breaker.
2

Inspect and tighten the compressor mounting bolts using a 1/2-inch wrench or socket.
3

Check the condenser fan for obstructions; remove any debris. Test the condenser fan motor by applying 120V AC directly to it. Replace if necessary.
4

Listen closely to the icemaker area; a buzzing water valve often indicates a fault. Replace the water valve.
5

Access the evaporator fan motor (usually behind an interior panel in the freezer). Check for ice buildup or obstructions. Test the motor for continuity using a multimeter; replace if open.
6

Check the compressor relay and overload using a multimeter for continuity. Replace if faulty.
7

Verify the damper control operates smoothly; replace if defective.

Safety Warning:

Always disconnect power to the refrigerator at the breaker panel before performing any repairs. Use Lock-Out/Tag-Out (LOTO) procedures. Some components carry 120V AC – exercise extreme caution.

Prevention:

Clean the condenser coils every 6 months with a vacuum cleaner brush attachment. Regularly check the evaporator fan for ice buildup. Ensure the refrigerator is level to minimize compressor vibration.

Expert Tip:

Many Amana refrigerators have a service mode. Typically, holding down the freezer temperature DOWN and refrigerator temperature UP buttons simultaneously for 5-10 seconds will access the service mode allowing component testing. Use caution and refer to the service manual.

Frequently Asked Questions

•How do I access the evaporator fan in my Amana refrigerator?

Typically, you'll need to remove the back panel inside the freezer compartment. This often involves unscrewing several screws and potentially removing ice buildup. Be careful not to damage any wiring.

•How do I test the condenser fan motor with 120V AC?

You will need a pigtail adapter with alligator clips. Connect the clips to the condenser fan motor leads. Plug the pigtail adapter into a known good 120V AC outlet. If the fan does not start, the motor is likely faulty. Use extreme caution when working with live voltage.

•Where is the compressor relay and overload located?

The compressor relay and overload are usually located in a housing attached directly to the side of the compressor. You may need to remove a cover to access them. They are usually push on connections to the compressor terminals.

Amana Refrigerator Humming or Buzzing Noise: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the evaporator fan in my Amana refrigerator?

•How do I test the condenser fan motor with 120V AC?

•Where is the compressor relay and overload located?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: