Wolf Range: Spark Module Clicking, But No Flame -... | appliancefaults.com

Technical Background:

The spark module receives 120V AC when a burner knob is turned to the 'light' position. The module then generates a high-voltage pulse that is sent to the igniter. The igniter creates a spark near the burner, which should ignite the gas. The MCU (Microcontroller Unit) logic monitors flame rectification signal to ensure proper ignition.

Symptoms:

The homeowner reports that the Wolf range spark module is clicking repeatedly when a burner knob is turned to the light position, but no flame ignites at the burner.

Possible Causes:

Clogged burner ports
Faulty igniter(s)
Defective spark module
Incorrect gas pressure
Open circuit in the wiring to the igniter
Grounding issue

Solution:

1

Turn off the gas supply to the range at the shut-off valve.
2

Disconnect power to the range at the breaker panel (LOTO).
3

Inspect the burner ports for any obstructions. Use a small wire or burner cleaning tool to clear any blockages.
4

Visually inspect the igniter for cracks or damage. Check igniter resistance with a multimeter. A typical reading is between 40-400 ohms.
5

Verify 120V AC power is reaching the spark module when a burner knob is turned to the light position.
6

Check the spark module grounding. A loose or corroded ground wire can cause erratic sparking.
7

If the igniter and wiring are good, replace the spark module.

Safety Warning:

Always disconnect power to the range at the breaker panel and turn off the gas supply before performing any repairs. High voltage is present at the spark module. Lock-Out/Tag-Out (LOTO) procedures must be followed.

Prevention:

Regularly clean the burner ports to prevent clogging. Check the igniters for damage during routine maintenance.

Expert Tip:

Some Wolf ranges have a diagnostic mode. To access it, simultaneously press and hold the bake and broil buttons for 5 seconds. Error codes can then be displayed, which can help pinpoint the problem.

Frequently Asked Questions

•What is the correct gas pressure for this Wolf range model?

The correct gas pressure is typically 10 inches of water column (WC) for natural gas and 11 inches WC for propane. Consult the range's service manual for the specific pressure requirements.

•How do I test the spark module without replacing it?

You can test the spark module by verifying that it receives 120V AC when the burner knob is turned to the 'light' position. Also, check the output voltage using a high-voltage probe. Be extremely careful when working with high voltage. If no output voltage is detected, and the input voltage is present, the module is likely defective.

•Where is the gas shut-off valve located?

The gas shut-off valve is typically located behind the range, either on the wall or floor. It's a small valve with a handle that turns to shut off the gas supply to the range.

Wolf Range: Spark Module Clicking, But No Flame - Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the correct gas pressure for this Wolf range model?

•How do I test the spark module without replacing it?

•Where is the gas shut-off valve located?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: