Whirlpool Gas Cooktop Popping Sound When Turning Off:... | appliancefaults.com

Technical Background:

The cooktop's spark module is responsible for igniting the gas. When a burner is turned off, the gas valve should close, and the spark module should cease firing. If the spark module continues to send voltage to the igniter after the gas valve closes, or if the gas valve closes abruptly, a “pop” sound can occur. The MCU controls the spark module and the gas valve. If the MCU malfunctions it can cause these issues.

Symptoms:

The homeowner observes a loud “pop” sound occurring immediately after turning off a burner on their Whirlpool gas cooktop. This occurs every time, or intermittently.

Possible Causes:

Spark module malfunction
Faulty igniter
Loose wiring connections
Gas valve sticking
Incorrect gas pressure regulator setting
Debris around the burner ports.

Solution:

1

Turn off the breaker to the cooktop at the breaker panel. Verify no voltage (120V AC) at the cooktop receptacle using a multimeter.
2

Disconnect the cooktop from the gas supply. Use pipe dope when reconnecting. Leak test with soapy water.
3

Remove the cooktop grates and burner caps.
4

Inspect the spark module for any signs of damage (burnt marks, cracks). Use a multimeter to check for continuity between the input and output terminals.
5

Check the igniters for proper resistance (typically around 1000-2000 ohms). Replace if outside this range or visibly damaged.
6

Inspect all wiring connections for looseness or corrosion. Tighten or replace as needed. Use a 1/4-inch nut driver.
7

Reassemble the cooktop, reconnect the gas supply, and turn the breaker back on. Perform a leak test using soapy water on all gas connections. Verify the gas pressure regulator is set to the correct pressure (typically 4 inches water column).

Safety Warning:

Always disconnect power to the appliance before performing any repairs. Lock Out/Tag Out (LOTO) procedures must be followed. Gas appliances can be dangerous if not properly repaired. If you are not comfortable working with gas, contact a qualified technician. High voltage is present in the spark ignition system.

Prevention:

Regularly clean the burner caps and burner heads to prevent debris buildup. Check the burner flames periodically for proper color (blue with a slight yellow tip). A yellow or orange flame indicates incomplete combustion, which can lead to soot buildup and potential problems.

Expert Tip:

Some Whirlpool cooktops have a service mode accessible by pressing and holding specific burner knobs while turning the power on. Consult the service manual for your specific model for the access sequence and diagnostic codes.

Frequently Asked Questions

•How do I check the gas pressure regulator setting?

You will need a manometer to measure the gas pressure. Connect the manometer to the test port on the gas regulator. Turn on a burner and observe the pressure reading. It should be within the range specified in the cooktop's service manual, typically around 4 inches water column.

•Where can I find a replacement spark module?

You can find replacement spark modules at most appliance parts retailers, both online and in brick-and-mortar stores. Be sure to have your cooktop's model number handy to ensure you get the correct part. Websites like AppliancePartsPros.com or RepairClinic.com are good resources.

•What is the proper way to clean a gas burner?

First, ensure the cooktop is cool and the gas supply is shut off. Remove the burner grates, caps, and heads. Wash the burner caps and heads with warm soapy water. Use a small wire brush or a burner cleaning tool to clean the burner ports. Ensure all ports are clear of debris before reassembling.

Whirlpool Gas Cooktop Popping Sound When Turning Off: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I check the gas pressure regulator setting?

•Where can I find a replacement spark module?

•What is the proper way to clean a gas burner?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: