Whirlpool WRS571CIHZ Refrigerator: Clicking Sound and... | appliancefaults.com

Technical Background:

The MCU (Microcontroller Unit) on the electronic control board manages the compressor, fans, and defrost cycles. When a fault is detected (e.g., compressor overload, fan failure), the MCU may attempt to restart the compressor, resulting in a clicking sound. Voltage is supplied to the compressor via a relay controlled by the MCU. The start relay and overload protector are crucial for compressor operation.

Symptoms:

The homeowner observes a clicking sound coming from the refrigerator approximately every 5 minutes. The refrigerator is not cooling properly in either the fresh food or freezer compartments.

Possible Causes:

Failed Start Relay/Overload
Defective Compressor
Faulty Condenser Fan Motor
Malfunctioning Electronic Control Board (ECB)
Locked Rotor
Icemaker issues

Solution:

1

Unplug the refrigerator from the 120V AC outlet.
2

Locate and inspect the start relay/overload on the compressor. Use a multimeter to test for continuity. Replace if faulty.
3

Check the compressor windings with a multimeter for shorts or opens. Resistance should be within specified range (refer to service manual).
4

Verify the condenser fan motor is running freely. If not, test the motor windings and replace if necessary.
5

Inspect the electronic control board (ECB) for any visible damage (burnt components). Test the voltage to the compressor from the ECB (should be 120V AC when calling for cooling).
6

If compressor windings test good and voltage is present, but compressor still clicks, the compressor may be internally locked and need replacement.
7

Inspect icemaker components, specifically the water valve and icemaker motor, for proper operation. Freezing up of the icemaker can contribute to cooling problems.

Safety Warning:

Always disconnect power (Lock Out/Tag Out - LOTO) before servicing. Refrigeration systems contain high voltage components. Use extreme caution when working near electrical components.

Prevention:

Clean the condenser coils every 6 months using a vacuum cleaner with a brush attachment. Ensure proper ventilation around the refrigerator. Check door seals regularly for air leaks.

Expert Tip:

Many Whirlpool refrigerators have a diagnostic mode. Press and hold the freezer temperature DOWN and refrigerator temperature UP buttons simultaneously for 3-5 seconds to enter service mode. Consult the service manual for error codes.

Frequently Asked Questions

•What are the typical resistance values for the compressor windings on this model?

Refer to the Whirlpool WRS571CIHZ service manual. Typically, you'll find resistance values between 2-10 ohms between the common and start terminals, and between the common and run terminals.

•How do I test the electronic control board output voltage?

Use a multimeter set to AC voltage. Connect the leads to the compressor terminals on the ECB. Ensure the refrigerator is calling for cooling (e.g., temperature set below current temperature). You should read approximately 120V AC.

•What type of refrigerant does this model use, and what are the EPA regulations for handling it?

The Whirlpool WRS571CIHZ typically uses R600a refrigerant. Technicians must be EPA Section 608 certified to handle and recover refrigerant. It is illegal to vent refrigerant into the atmosphere.

Whirlpool WRS571CIHZ Refrigerator: Clicking Sound and Not Cooling - Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What are the typical resistance values for the compressor windings on this model?

•How do I test the electronic control board output voltage?

•What type of refrigerant does this model use, and what are the EPA regulations for handling it?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: