Lennox EL296UHV Error Code E 294: Combustion Air Inducer Over Current
What Does Code E 294 Mean?
Error code E 294 on the Lennox EL296UHV is a combustion-air inducer over-current fault. The SureLight integrated control monitors the current the inducer motor draws, and when that current climbs above the expected range it flags E 294. Watching motor current lets the control catch a deteriorating inducer before it fails outright or affects safe venting. The code clears once the inducer current is sensed to be back in range after the ignition that follows the soft lockout or a reset.
The inducer motor pulls combustion gases through the heat exchanger and out the vent, and it is the same motor whose airflow the pressure switches confirm before the burners can light. Over-current typically comes from worn bearings that increase friction and force the motor to draw more amps, or from a motor whose windings are degrading. Debris or condensate in the inducer housing, or a partially restricted exhaust that makes the motor work harder, can also raise the current.
Because the inducer is central to draft proving, an over-current condition ties into the pressure-switch codes on this control: as the inducer weakens or draws abnormal current you may also see draft-related faults such as E 228 or E 223. Checking the bearings, wiring, and amp draw and, if the inducer is out of spec, replacing it is technician work — not a homeowner repair.
What You'll Notice
- The inducer sounds louder, rougher, or different than it normally does
- The seven-segment LED shows E 294
- You may feel more vibration from the furnace when the inducer runs
- Heating is interrupted when the code trips the soft lockout
- The furnace may also show pressure-switch or draft-related codes
How This Is Diagnosed
A technician measures the inducer motor's actual amp draw and compares it to the performance standard, since an above-range reading is what triggers E 294. They check the motor bearings for wear or roughness and inspect the inducer housing for debris or condensate that would add load.
They also examine the inducer wiring and connections, and look for a partial exhaust restriction that could force the motor to draw extra current. If the motor is out of spec or the bearings are worn, the inducer assembly is replaced to bring the current back within range.
When to Call a Professional
This code involves components that are not homeowner-serviceable, so have a licensed HVAC technician diagnose and repair it. Keep in mind:
- The inducer motor sounds louder, rougher, or noisier than usual
- You notice new vibration from the furnace when the inducer runs
- E 294 keeps returning after the lockout clears
- The furnace also logs draft-related codes such as E 228 or E 223
- The inducer needs its bearings and amp draw professionally checked
Frequently Asked Questions
What does over-current mean here?
It means the inducer motor is pulling more electrical current than the control expects. That usually indicates added mechanical load — commonly worn bearings — or a motor whose windings are failing.
Why does the control watch inducer current at all?
The inducer is what proves safe draft before the burners light, so catching a motor that is starting to fail lets the control flag the problem early rather than waiting for a complete failure or a venting fault.
Will E 294 clear by itself?
The code clears once the inducer current is sensed back in range after the next ignition or a reset. But if the bearings are worn, the current will keep climbing over time and the fault will return until the inducer is serviced.
✓ Verified against manufacturer service manual — March 2026