Whirlpool Cooktop Clicking But Not Lighting: Spark... | appliancefaults.com

Technical Background:

The cooktop's electronic ignition system relies on a Main Control Unit (MCU) or dedicated spark module. When a burner knob is turned on, the MCU sends a signal to the ignition module. The ignition module then sends a high-voltage pulse to the spark electrodes located near each burner. This high-voltage arc ignites the gas flowing from the burner orifice. The voltage path originates at the breaker panel (120V AC), travels to the MCU/ignition module, then to the spark electrodes.

Symptoms:

Homeowner observes that the Whirlpool cooktop clicks rapidly when a burner knob is turned on, but the burner fails to light. Gas may or may not be heard. This can occur on one or more burners.

Possible Causes:

Faulty spark electrode(s)
Defective ignition module
Loose wiring connections to the spark electrodes or ignition module
Clogged burner ports hindering gas flow
Incorrect gas pressure
Damaged or shorted wiring harness

Solution:

1

Disconnect power to the cooktop at the breaker panel.
2

Visually inspect all spark electrodes for cracks, breaks, or carbon buildup. Clean with a dry cloth or replace as needed.
3

Check wiring connections to each spark electrode and the ignition module for looseness or damage. Tighten or repair as necessary.
4

Use a multimeter to test the spark electrode for continuity. It should have continuity. If not, replace it.
5

Test the ignition module output using a multimeter while attempting to light the burner. You should measure approximately 120V AC to the spark electrode.
6

If voltage is not present at the ignition module output, replace the ignition module.
7

Reconnect power to the cooktop and test burner ignition.

Safety Warning:

Always disconnect power to the appliance at the breaker panel before performing any repairs. Lock Out/Tag Out (LOTO) procedures should be followed. High voltage is present in the ignition system.

Prevention:

Regularly clean burner ports to prevent clogging. Avoid spilling liquids on the cooktop, especially around the spark electrodes. Annually inspect wiring connections for corrosion or damage.

Expert Tip:

Many Whirlpool cooktops have a diagnostic mode. To access, press and hold the 'Timer' and 'Clock' buttons simultaneously for 3 seconds. Error codes will then be displayed. Refer to the service manual for code definitions.

Frequently Asked Questions

•How do I identify the correct replacement spark electrode for my cooktop model?

Locate the model number of your cooktop. Use this number to search for compatible spark electrodes on appliance parts websites or consult a parts distributor.

•What is the correct gas pressure for my Whirlpool cooktop, and how do I check it?

Refer to the cooktop's installation manual for the specified gas pressure (typically measured in inches of water column - in. w.c.). A manometer is required to accurately measure gas pressure. This is best left to a qualified gas technician.

•Where is the ignition module typically located in a Whirlpool cooktop?

The ignition module is usually located underneath the cooktop's surface, often near the burner control valves. You may need to remove the cooktop from the counter to access it.

Whirlpool Cooktop Clicking But Not Lighting: Spark Electrode Replacement Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I identify the correct replacement spark electrode for my cooktop model?

•What is the correct gas pressure for my Whirlpool cooktop, and how do I check it?

•Where is the ignition module typically located in a Whirlpool cooktop?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: