Whirlpool Cooktop Clicking But Not Lighting? How to Fix... | appliancefaults.com

Technical Background:

The cooktop's MCU (Microcontroller Unit) sends a signal to the spark module when a burner knob is turned on. The spark module then generates a high-voltage spark at the igniter. This spark ignites the gas flowing from the burner. A cracked igniter may not properly arc to ground, and low voltage to the spark module prevents proper ignition.

Symptoms:

The homeowner reports that the Whirlpool cooktop burner clicks repeatedly when the knob is turned, but the burner does not light.

Possible Causes:

Cracked or faulty igniter
Clogged burner ports
Weak or failed spark module
Gas supply issue (shutoff valve closed)
Defective spark switch
Incorrect system

Solution:

1

Turn off the breaker to the cooktop at the breaker panel.
2

Locate the igniter for the burner that is not lighting. Visually inspect the igniter for cracks or damage.
3

Using a multi-meter, test the igniter for continuity. A healthy igniter should show continuity. If open, replace it.
4

Inspect the burner ports for clogs. Use a small wire or burner cleaning tool to clear any debris.
5

Check the gas supply valve to ensure it is fully open. Also, check the gas regulator if accessible.
6

If the igniter and burner are clear, test the spark module. This usually requires a specialized meter or visual inspection during operation with extreme care (high voltage).
7

If still not igniting, the spark switch might be defective. This requires tracing the wiring diagram and testing with a multimeter after verifying no voltage is present with a non-contact tester.

Safety Warning:

Lock Out, Tag Out (LOTO) the breaker before working on the cooktop. The spark module generates high voltage. Avoid contact with the igniter and spark module while the cooktop is powered on. Gas leaks are a fire and explosion hazard. If you suspect a gas leak, evacuate the area and contact the gas company immediately.

Prevention:

Regularly clean the burner ports with a burner cleaning tool. Avoid spills that can clog the ports. Annually, inspect the igniters for visible damage.

Expert Tip:

Some Whirlpool cooktops have a service mode accessible through a specific button sequence. This mode allows you to test the spark module and other components directly. Refer to the service manual for the exact sequence for your model.

Frequently Asked Questions

•What is the correct resistance reading for a good igniter?

A good igniter should typically show continuity, indicating a very low resistance (close to 0 ohms). An open circuit (infinite resistance) indicates a faulty igniter.

•How do I safely test the spark module?

Testing the spark module safely requires specialized equipment and knowledge. It is best left to a qualified technician. Visually inspect for burned components. If you must test it yourself, turn off the breaker, and use a non-contact voltage tester to ensure no voltage is present before handling any components. Extreme caution is required due to the high voltage.

•What type of tool can I use to clean the burner ports?

You can use a burner cleaning kit that includes small wires of different gauges. A sewing needle or a small piece of stiff wire can also work, but be careful not to enlarge the port or damage the burner.

Whirlpool Cooktop Clicking But Not Lighting? How to Fix a Cracked Igniter

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the correct resistance reading for a good igniter?

•How do I safely test the spark module?

•What type of tool can I use to clean the burner ports?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: