E7
Problem with igniter circuit
This code typically points to
- Improperly connected igniter
- Shorted igniter
- Poor unit ground
- Igniter relay fault on integrated control module
Next checks to confirm
- Check/correct wiring from control to igniter
- Replace shorted igniter
- Check/correct unit grounding
- Check igniter output from control and replace control if necessary
Escalation
Furnace fails to operate
Reset behavior
Clears after igniter circuit fault is corrected.
Urgent
Fix now