Lincoln Aperion 24 Oven Blower SC: 0x01 Motor Short Circuit
Upper Blower SC: 0x01 or Lower Blower SC: 0x01 means a blower motor has a phase-to-phase short circuit. Power off with the switch, wait, and power on after 30 seconds. If it returns, unplug the oven and have the motor and drive checked.
High: the blower drive has shut down on a short circuit.
- Code
- Upper/Lower Blower SC: 0x01
- Maker
- Lincoln
- Equipment
- Pizza ovens
- Applies to
- Aperion 24 UI
What does Lincoln Upper/Lower Blower SC: 0x01 mean?
Each blower in the Aperion 24 is driven by a motor drive that watches its output. If two phases of the motor wiring touch each other, the drive sees a short circuit and shuts down, and the touchscreen alarm reads "Upper Blower SC: 0x01" or "Lower Blower SC: 0x01", depending on which blower. The drive LED shows red at 1 second on and 1 second off. The manual lists one cause, a motor phase-to-phase short. Its steps are to power off with the switch, wait, and power on after 30 seconds. If it returns, unplug the oven, check the motor for phase-to-phase shorts and check the wires, then replace the motor drive. A short can be inside the motor windings, in the cable between motor and drive, or in the drive. A drive that shuts down on a short protects the wiring, so repeated restarts should be avoided.
Affected models and control systems
Lincoln Aperion 24 (2424E, electric, 60 Hz) with the easyTouch screen; the alarm covers both the upper and the lower blower motor drive.
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
- Upper or Lower Blower SC: 0x01 on the touchscreen
- Drive LED flashing red once per second
- Blower not turning
Possible causes
Listed in Lincoln's documentation
- Motor phase to phase short
Other likely causes — what usually sits behind Upper/Lower Blower SC: 0x01 on this control. A technician confirms which one it is before any part is replaced.
- Motor cable insulation worn through where it passes a hot bracket
- Winding insulation failure after years of heat cycling
Safe checks before calling for service
- Turn the oven off with its switch and wait 30 seconds.
- Turn it on again and see whether the blower starts.
- If the alarm returns, do not keep restarting; unplug the oven.
- Tell the technician whether it is the upper or lower blower and what the drive LED did.
How a technician diagnoses Upper/Lower Blower SC: 0x01
- Read the alarm to see whether it is the upper or lower blower.
- With the oven unplugged, measure the motor phase-to-phase and to ground.
- Inspect the motor wires and connector.
- Disconnect the motor from the drive and retest the drive.
- Replace the motor drive if the motor tests good.
- Testing motor leads means working with the oven unplugged and covers off.
- A shorted motor can damage the drive.
- Drive replacement needs the right settings.
How Upper/Lower Blower SC: 0x01 differs from similar codes
OC 0x02 and 0x03 are overloads and OV and UV are supply voltage; SC 0x01 is a short between motor phases.
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
Which blower is affected?
The alarm text says Upper or Lower.
Can I just restart?
Once, after 30 seconds; repeated restarts are not recommended.
Is the motor bad?
A phase-to-phase short is the single cause the manual lists, but the drive may also need replacing.
Need help with Lincoln Upper/Lower Blower SC: 0x01?
A technician confirms the cause on site and gives you the price in writing before any work starts.