Lennox Furnace: Furnace will not run (no heat) – Lennox EL195UHNE

Furnace will not run (no heat) - Lennox EL195UHNE on a Lennox furnace: Quick checks from the manual when the EL195UHNE does not start on a call for heat.

Homeowner with a furnace problem? Call (647) 657-2977 or book a service call — licensed technicians across Vaughan and the GTA.

Applies to: EL195UHNE

Common causes of furnace will not run (no heat) - lennox el195uhne

• No heat call
• Access panel off (door interlock)
• Power off / fuse or breaker
• Dirty filter tripping the limit
• Gas off
• Ignition lockout (Watchguard)

How to fix furnace will not run (no heat) - lennox el195uhne: step by step

1. Confirm the thermostat is calling for heat (24 VAC on W).
2. Make sure both access panels are on - the door interlock switch cuts line voltage.
3. Check the main disconnect, fuses and breakers, and the 3 A circuit breaker CB8 in the control box.
4. Check the filter; a plugged filter makes the limit shut the unit off (7 flashes).
5. Confirm gas is on at the meter, the main manual valve and the internal valve.
6. Read the red LED flash code and stored codes (press and release the recall button). If the unit is in lockout and locks out again, inspect for blockages (vent, intake, condensate drain).

If the unit shows an error code, look it up: Lennox Furnace codes

Models

Lennox EL195UHNE

EL195UH040NE36BEL195UH060NE36BEL195UH080NE48CEL195UH100NE60C

EL296UHV

EL296UH045XV36BEL296UH070XV36BEL296UH090XV36CEL296UH090XV48CEL296UH090XV60CEL296UH110XV48CEL296UH110XV60CEL296UH135XV60D

Lennox ML180UHE

ML180UH045E36AKML180UH045XE36AKML180UH070E36AKML180UH070E36BKML180UH070XE36AKML180UH070XE36BKML180UH090E48BKML180UH090E60CKML180UH090XE48BKML180UH110E60CKML180UH110XE60CKML180UH135E60DK

Lennox SL280UHV

SL280UH060NV36ASL280UH070V36ASL280UH080NV48BSL280UH080NV60CSL280UH090V36BSL280UH090V48BSL280UH090V60CSL280UH100NV60CSL280UH110V60CSL280UH135V60D

Lennox SL297NV

SL297UH040NV36BSL297UH060NV36BSL297UH080NV48CSL297UH080NV60C