12 flashes Flame sensed with gas valve off

What the control is telling you

The control senses flame when the gas valve should be closed. Gas valve stays off, inducer on, blower on heating speed.

Applies to: EL195UHNE furnaces with ignition control 103217-03 or 107163-01 (red LED)

Likely causes

• Gas valve leaking through
• Gas valve energized by miswiring
• Flame sensor shorted to ground / control fault

Test and repair steps

1. Warning: Shut off gas to the furnace (valve switch by hand only).
2. Look for flame at the burner with no call for heat; if present the valve is leaking - replace it.
3. Check the gas valve wiring (pins 9 and 12) for a short that powers the valve.
4. Check the flame sensor wire for shorts; if no flame is present, replace the control.

Settings for these units

Filter sizes (filter rack kits) · Lennox EL195UHNE

Filters are field supplied; check monthly.

100NE60C over 1800 cfm with single side return needs a 20 x 25 x 1 filter via return air base and transition.

Models that show this code

4 models in Lennox EL195UHNE

Other codes on the same units

• 4 flashes Low flame signal
• 5 flashes Watchguard - ignition retries/recycles exceeded
• 7 flashes Primary or secondary limit open
• 8 flashes Rollout switch open
• 9 flashes Pressure switch stays open or drops out on a heat call
• 10 flashes Watchguard - pressure switch opened 5 times in one heat demand
• 11 flashes Pressure switch stuck closed before inducer starts
• 13 flashes Low line voltage