E201CRITICAL
Ignition Lockout
Furnace has attempted ignition 3 times and failed, triggering a safety lockout. No heat until the system is reset and the root cause is addressed.
What This Error Code Means
The furnace tried to light the burners three times without success. The control board has locked out the system to prevent raw gas accumulation.
Common Causes
- Faulty ignitor
- Clogged burner orifices
- Gas supply interruption
- Flame sensor dirty or failed
- Blocked condensate drain
Affected Brands
LennoxCarrierTraneGoodmanRheemYorkBryant
How ROMA Heating Fixes This
- Diagnose the specific cause using error code history and component testing
- Clean or replace the ignitor and flame sensor
- Check gas pressure and supply
- Clear any blockages in the vent or condensate system
- Reset system and verify proper ignition sequence
24/7 Emergency Service
Available nights, weekends, and holidays. Fast 1-2 hour response.
Licensed Technicians
TSBC Gas License LGA0202903. Fully insured and WCB covered.
Same-Day Service
We diagnose and fix error code issues quickly.