Whirlpool Cooktop Clicking But Not Lighting: Air-Gas... | appliancefaults.com

Technical Background:

The cooktop uses a spark module that sends a high-voltage pulse to the igniter when a burner knob is turned on. This spark ignites the gas. The air-gas mixture is critical for proper ignition. The Main Control Unit (MCU) monitors and controls this process. Voltage paths include 120V AC to the spark module, then a stepped-up voltage (several thousand volts) to the igniter.

Symptoms:

The cooktop burners are clicking repeatedly when you turn the knob, but the gas is not igniting, and no flame appears. There might be a faint smell of gas, or no smell at all. The other burners may be working correctly, or they may exhibit the same issue.

Possible Causes:

Clogged burner ports affecting gas flow.
Faulty igniter not producing a strong enough spark.
Defective spark module failing to send voltage to the igniter.
Incorrect air shutter adjustment causing improper air-gas mixture.
Blocked gas supply line or regulator problem.
Grounding issue affecting spark strength.

Solution:

1

Turn off the gas supply to the cooktop.
2

Disconnect power to the cooktop at the breaker panel.
3

Clean the burner ports using a small wire or burner port cleaning tool. Remove any debris that could be blocking the gas flow.
4

Inspect the igniter for cracks or damage. Use a multimeter to test for continuity; it should show a low resistance reading. If open, replace the igniter.
5

Check the air shutter adjustment. Loosen the screw and adjust the shutter until the flame is blue with a small yellow tip. Secure the screw.
6

Reconnect power to the cooktop at the breaker panel. Turn on the gas supply.
7

Test the cooktop burners. If the problem persists, the spark module may be faulty and require replacement. Consult a qualified technician.

Safety Warning:

Lock Out/Tag Out (LOTO) the breaker before servicing. Gas leaks can be explosive. Ensure adequate ventilation when working on gas appliances. High voltage is present in the spark ignition system. Avoid contact with the igniter and spark module when the unit is powered on.

Prevention:

Regularly clean the burner grates and burner heads to prevent debris from clogging the ports. Check the flame color periodically. A yellow or orange flame indicates an improper air-gas mixture. Schedule annual licensed technician maintenance.

Expert Tip:

Many Whirlpool cooktops have a hidden service mode. Simultaneously press and hold the 'Timer' and 'Cook Power' buttons for 5 seconds. This may display error codes or allow you to run diagnostic tests.

Frequently Asked Questions

•How do I properly adjust the air shutter?

The air shutter is typically a small adjustable plate near the burner. Loosen the screw securing it and rotate the shutter until the flame burns blue with a small yellow tip. Tighten the screw to secure the adjustment. A mostly blue flame indicates a good air-gas mixture.

•How can I test the spark module?

Testing the spark module requires specialized tools and knowledge. You can use a multimeter to check for voltage input (120V AC). However, the output is a high-voltage pulse and is best left to a qualified technician. If you suspect a faulty spark module, replacing it is often the easiest solution.

•What is the proper gas pressure for my cooktop?

Natural gas cooktops typically operate at a manifold pressure of 4 inches of water column (WC). Liquid Propane (LP) cooktops operate at 10 inches WC. Consult your appliance's service manual for the exact specifications. Pressure testing requires a manometer.

Whirlpool Cooktop Clicking But Not Lighting: Air-Gas Mixture Fix

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I properly adjust the air shutter?

•How can I test the spark module?

•What is the proper gas pressure for my cooktop?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: