Lincoln Aperion 24 Oven Blower Motor Failure (Low RPM)
Upper Blower Motor Failure (Low RPM) or Lower Blower Motor Failure (Low RPM) means the blower motor is not moving, which is usually linked to a drive failure. Power cycle after 30 seconds, and call for service if it returns.
High: the blower is not moving and the oven cannot bake normally.
- Code
- Upper/Lower Blower Motor Failure (Low RPM)
- Maker
- Lincoln
- Equipment
- Pizza ovens
- Applies to
- Aperion 24 UI
What does Lincoln Upper/Lower Blower Motor Failure mean?
The control compares the motor speed the drive reports with the speed it asked for. If the motor is not moving, the screen shows "Upper Blower Motor Failure (Low RPM)" or "Lower Blower Motor Failure (Low RPM)". The manual says this is usually linked to a drive failure. Its steps are to power cycle after 30 seconds, and then use the service Fan Test screen to turn the motor off and on and verify that RPM is not 0. A technician also checks for other alarms and the drive LED code, checks for opens, shorts or grounds, and replaces the motor drive. The listed causes are a motor not moving and a motor drive failure. This message often appears together with another blower alarm, such as phase loss or a short circuit, because those conditions can stop the motor first. The other alarm is then the better clue to the real cause.
Affected models and control systems
The 2424E Aperion 24 (Lincoln Impinger line, electric, 60 Hz) with easyTouch, naming either the upper or the lower blower motor.
Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.
What you may notice
- Blower Motor Failure (Low RPM) on the touchscreen
- Blower not turning
- Another blower alarm displayed with it
Possible causes
Listed in Lincoln's documentation
- Motor not moving
- Motor drive failure
Other likely causes — what usually sits behind Upper/Lower Blower Motor Failure on this control. A technician confirms which one it is before any part is replaced.
- A seized motor bearing that stops the blower while the drive is good
- A cooling problem that overheated the drive and made it shut down
Safe checks before calling for service
- Turn the oven off with its switch and wait 30 seconds.
- Turn it on again and listen for the blower.
- Write down any other alarms shown at the same time.
- Tell the technician if it is the upper or lower blower and what the drive LED did.
How a technician diagnoses Upper/Lower Blower Motor Failure
- Read all alarms and the drive LED code.
- Power cycle after 30 seconds and run the service Fan Test screen to confirm the RPM is not 0.
- Check for opens, shorts and grounds in the motor and its wiring.
- Spin the blower by hand with the oven unplugged.
- Replace the motor drive, or the motor if it is seized.
- The Fan Test and drive checks are done with the oven powered and the covers off.
- Motor and drive wiring carry 208-240 V.
- A seized motor can damage the drive.
How Upper/Lower Blower Motor Failure differs from similar codes
Phase loss reports a disconnected motor phase at 0 RPM; this message reports a motor not moving, usually from the drive.
Technical reference
- Maker documentation
- Lincoln owner support
- Edition
- LIN_EO_SM_IMPAPERION2424_4607818 07/21
- Models / control
- Aperion 24 UI
- Section
- Section 5 Troubleshooting, UI Alarm Messages, pp. 28-29
- Checked
- October 2026
We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.
Related Lincoln pizza oven error codes
Is this always the motor?
No, the manual says it is usually linked to a drive failure.
What is the Fan Test screen?
A service screen where the motor can be turned off and on to check RPM.
What if another alarm shows?
The other alarm is a better clue.
Need help with Lincoln Upper/Lower Blower Motor Failure?
A technician confirms the cause on site and gives you the price in writing before any work starts.