Lennox Error Code 8 flashes: Rollout switch open (Furnace)
Lennox error code 8 flashes on a furnace means: Rollout switch open. It is also called Lennox diagnostic code 8 flashes.
Homeowner? What Lennox code 8 flashes means for you
Stop and call Your furnace is reporting: Rollout switch open. This code is a safety shutdown. Turn the furnace off and call a licensed technician. Do not keep resetting it. If you smell gas, leave the house and call your gas utility or 911 from outside.
Safe things you can check yourself
- Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
- Make sure the unit has power: its on/off switch (often looks like a light switch near the unit) is ON and the breaker in the electrical panel is not tripped.
Call (647) 657-2977Book a service call
Licensed technicians serving Vaughan, Toronto and the GTA.
What does Lennox error code 8 flashes mean?
The flame rollout switch has opened. Gas is off, inducer and blower run. The sequence holds until the switch is reset and power or thermostat is cycled.
Applies to: EL195UHNE furnaces with ignition control 103217-03 or 107163-01 (red LED)
Common causes of Lennox code 8 flashes
- Blocked heat exchanger
- Blocked vent or intake
- Plugged condensate drain
A technician checks these and 1 other possible causes on site before replacing any part.
Lennox models that use code 8 flashes
EL195UH040NE36BEL195UH060NE36BEL195UH080NE48CEL195UH100NE60C
Other Lennox Furnace codes
All Lennox Furnace error codes →
Lennox code 8 flashes: homeowner questions
What does Lennox code 8 flashes mean?
Rollout switch open. The flame rollout switch has opened. Gas is off, inducer and blower run. The sequence holds until the switch is reset and power or thermostat is cycled.
Is it safe to keep using my furnace with code 8 flashes?
No. Code 8 flashes is a safety shutdown, so keep the furnace off until a licensed technician has checked it.
Can I reset Lennox code 8 flashes myself?
Do not keep resetting it. Repeated resets can hide a safety problem; a licensed technician needs to find the cause.
Who can fix Lennox code 8 flashes near me?
Aurora Star Tech Inc. repairs Lennox furnaces in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.
Homeowner help: Furnace Not Turning On: What to Check · Furnace Blinking Light: What the Flash Codes Mean
Troubleshooting guides
- Blowing cold air All brands · Furnace
- No heat All brands · Furnace
- Short cycling All brands · Furnace
- Blower motor does not run - Lennox SL280UHV ECM checks Lennox · Furnace
- Display shows two horizontal bars (soft disable) - Lennox SL297NV Lennox · Furnace
- Furnace will not run (no heat) - Lennox EL195UHNE Lennox · Furnace
- Furnace will not run (no heat) - Lennox SL297NV Lennox · Furnace
- Furnace will not run - Lennox SL280UHV checklist Lennox · Furnace
- Indoor blower does not run - Lennox EL195UHNE Lennox · Furnace
- Indoor blower does not run - Lennox ML180UHE Lennox · Furnace
- Poor ignition or combustion resonance - Lennox EL195UHNE Lennox · Furnace
- Poor ignition or loud combustion resonance - Lennox SL280UHNV Lennox · Furnace
- Two horizontal lines on display (soft disable) - Lennox communicating Lennox · Furnace
Source: Lennox EL195UHNE Unit Information Corp 1801-L1 (rev 04/2024), Table 4 (103217-03) / Table 5 (107163-01) diagnostic codes, p.8-10; flowchart p.51-52. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.