F07
Westinghouse
Ignition lockout / no ignitor operation
Furnace displays F07; inducer runs but there is no ignition attempt.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Open hot surface ignitor, Broken ignitor wiring harness, Defective ignitor relay on IFC, Incorrect ignitor replacement with wrong resistance
How to Fix / Troubleshooting
Safety: Turn off power and gas. Ignitor is fragile; handle carefully.
Steps:
- Locate the hot surface ignitor mounted near the burners.
- Disconnect the ignitor plug and measure resistance across the ignitor leads with a multimeter. Typical values are 40–90 Ω; OL (open) indicates a failed ignitor.
- Inspect the ceramic base and element for cracks or chips; replace if damaged.
- Install a Westinghouse-approved replacement ignitor with the same electrical rating and mounting style. Do not touch the element with bare fingers.
- Check the ignitor wiring harness for burns or loose connections at the IFC.
- Restore power and test a heat cycle.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Hot Surface Ignitor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements