Lennox Error Code 292 (E292): Indoor Blower Motor Start Fault (Meaning, Causes, Fixes)

What the code means

In Lennox's Residential Communicating Systems Alert Code Guide, alert 292 is ID Blower Motor Start Fault: the indoor unit blower motor will not start, and the system goes into Watchguard mode. Lennox says this could be due to a seized bearing, a stuck wheel or obstructions, and that the motor, motor module or wheel should be replaced if the assembly does not operate or meet performance standards. It's rated Service Urgent and clears automatically after the indoor blower motor starts successfully. Lennox furnace unit information for the SL280UHVK and SL280DFNV shows the same fault as E292, indoor blower motor unable to start due to an obstructed wheel or seized bearings, with a 1-hour soft lockout that clears after the circulator successfully starts. While the blower can't run, the furnace can't move heated air and the air conditioner can't move cooled air, so the system effectively stops working. A related code is E295, indoor blower motor temperature too high, where the motor tripped its internal protector.

Likely causes

• A seized blower motor bearing, so the motor can't turn the shaft (Lennox names this first)
• A stuck blower wheel, for example one rubbing the housing or with a loose hub that has shifted on the shaft
• Something obstructing the blower wheel, such as debris, insulation, a loose part or a heavy buildup of dirt on the wheel blades
• A failed variable-speed motor or motor module (control end) that can't start the motor even though the wheel turns freely

Safe DIY checks

1. Read the alert on your Lennox thermostat or the furnace's display so you know it's 292 (blower start fault) and not 295 (blower motor overheated).
2. Turn off power to the furnace or air handler at the service switch or breaker and wait a few minutes before opening the blower compartment door.
3. Look into the blower housing with a flashlight for anything caught in the wheel, such as debris, a loose wire, insulation or a filter that got pulled in.
4. With power still off, turn the blower wheel by hand. It should spin freely and coast a little. If it's stiff, grinds, won't move or rubs the housing, the bearing or wheel is the problem.
5. Check the air filter and replace it if it's clogged, since a dirty filter lets dust build up on the wheel.
6. Close the blower door fully (the door switch must be pressed), restore power and give the system a call for heat or cooling. The alert clears on its own once the blower starts; on a furnace you may have to wait out the one-hour soft lockout.
7. If the wheel spins freely but code 292 keeps returning, the motor or its control module has likely failed, which is a job for a technician.

Parts that commonly fix it

Always match the part number to your exact model.

Related codes

• 31 Lennox HVAC System 31
• 413 Lennox HVAC System 413
• 433 Lennox HVAC System 433
• 434 Lennox HVAC System 434
• 178 Carrier HVAC System 178

All Lennox codes →

Sources

1. Lennox Residential Communicating Systems Alert Code Guide (V2, 100017), Table 2: alert 292 ID Blower Motor Start Fault (Service Urgent, Watchguard mode, seized bearing, stuck wheel, obstructions, replace motor, module or wheel, clears after the blower starts), plus 291, 294 and Service and Application Note H-17-02
2. Lennox Unit Information 100176 (SL280UHVK): E292 indoor blower motor unable to start, obstructed wheel or seized bearings, 1-hour soft lockout, clears after circulator starts; E295 blower motor over temperature
3. Lennox Unit Information 100027 (SL280DFNV): same E292 definition and 1-hour soft lockout