Roper Refrigerator: Compressor Hot, Fans Running... | appliancefaults.com

Technical Background:

The Main Control Unit (MCU) sends a 120V AC signal to the compressor relay, which energizes the compressor. The start relay assists the compressor during startup. The overload protector shuts down the compressor if it overheats. Fan motors circulate air across the evaporator and condenser coils to facilitate heat transfer.

Symptoms:

My Roper refrigerator's compressor is extremely hot to the touch, but both the evaporator fan inside the freezer and the condenser fan at the back are running. The refrigerator is not cooling properly.

Possible Causes:

Faulty Start Relay/Overload.
Defective Compressor.
Condenser Coil Blockage.
Refrigerant Overcharge.
Sealed System Restriction.

Solution:

1

Unplug the refrigerator from the outlet.
2

Locate the compressor access panel, usually at the rear of the refrigerator, near the bottom.
3

Remove the access panel with a 1/4-inch nut driver.
4

Use a multimeter to test the compressor start relay/overload for continuity. Replace if faulty.
5

Clean the condenser coils using a vacuum cleaner with a brush attachment.
6

Check the compressor windings for shorts to ground using a multimeter. High resistance indicates a good winding.
7

If the above steps do not resolve the issue, consult a certified HVAC/Refrigeration technician for sealed system diagnosis and repair. This requires specialized equipment and knowledge of refrigerant handling.

Safety Warning:

Disconnect the refrigerator from the power source (Lock Out/Tag Out) before performing any repairs. High voltage components are present and can cause serious injury or death. Refrigerant systems contain pressurized refrigerant which can cause frostbite. Only a qualified technician should handle sealed system repairs.

Prevention:

Clean the condenser coils every 6 months using a vacuum cleaner with a brush attachment. This improves airflow and reduces the workload on the compressor.

Expert Tip:

Some Roper refrigerators have a service mode. To enter it, press and hold the freezer temperature DOWN and refrigerator temperature UP buttons simultaneously for 5 seconds. This may allow you to run diagnostic tests on the compressor and fans.

Follow-up Questions:

Frequently Asked Questions

•What is a 'short to ground' on the compressor windings?

A short to ground means that the electrical insulation on the compressor motor windings has failed, and electricity is leaking to the metal casing of the compressor. This is a dangerous condition and usually means the compressor is beyond repair.

•How do I test the start relay/overload with a multimeter?

Set your multimeter to the ohms setting (resistance). With the refrigerator unplugged, remove the start relay/overload from the compressor. Place one probe on each terminal of the relay. A reading of close to zero ohms (continuity) indicates a good relay. An open circuit (infinite resistance) indicates a faulty relay that needs replacement.

•What type of refrigerant does my Roper refrigerator use?

Most modern Roper refrigerators use R134a or R600a refrigerant. This information is typically found on a sticker located on the back of the refrigerator near the compressor. Note: Working with R600a requires extra precautions due to its flammability.

Roper Refrigerator: Compressor Hot, Fans Running Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is a 'short to ground' on the compressor windings?

•How do I test the start relay/overload with a multimeter?

•What type of refrigerant does my Roper refrigerator use?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: