Baxter Bakery Oven Error Code E27: Both Rack Limit Switches Active
E27 on a Baxter OV520 red Rack Limit Switch Error screen means both the up and down limit switches read active at once, and the motor timed out. The manual says to contact a Baxter service technician.
High: the lift's position cannot be trusted, and the oven stops until the switch problem is repaired.
- Code
- E27
- Maker
- Baxter
- Equipment
- Bakery ovens
- Applies to
- Baxter OV520G1, OV520G2 (gas), OV520E1, OV520E2 (electric) rotating rack ovens with Smart Touch control
What does Baxter error code E27 mean?
The lift on the OV520 has an up and a down limit switch, and only one of them should ever be active at a time, because the lift cannot be at the top and the bottom together. If the control sees both active at the same moment, it cannot trust either, so it stops the motor and the Smart Touch screen turns red with E27, Rack Limit Switch Error. The manual's explanation is detecting up and down limits at the same time, motor timed out, and the action is to contact a Baxter service technician. It lists no causes. A stuck switch, a short in the wiring, or a switch carrying a wrong signal could produce this, but those are our likely causes. It differs from E25 and E26, where one switch is missing. The display reads Red screen: Rack Limit Switch Error with E27.
Affected models and control systems
This code is listed for the Baxter OV520G1 and OV520G2 (gas) and OV520E1 and OV520E2 (electric) rotating rack ovens with Smart Touch control, in Operator Manual form 36764 Rev. D.
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
- Red screen with Rack Limit Switch Error and E27
- Lift not moving at all
- Motor stopping straight after starting
Possible causes
Likely causes — what usually sits behind error code E27 on this control. A technician confirms which one it is before any part is replaced.
- One limit switch stuck closed, so it reads active all the time
- Wiring between the two switches shorted or pinched
- Switch input on the control reading a false signal
Safe checks before calling for service
- Switch the oven off and do not try to move the lift by hand.
- Look at the rack and lift area for anything holding a switch pressed, without opening panels.
- Switch the oven on again once to see whether the error clears.
- If E27 returns, note whether the lift moved at all, for the service call.
How a technician diagnoses error code E27
- Read the history for E25, E26 and E27.
- Test each limit switch with a meter in both positions.
- Inspect the switch wiring for shorts, chafing and moisture.
- Check the control inputs for the two switches.
- Replace the switch, wiring or board input that fails and run full travel.
- Limit switches and their wiring carry live voltage and sit near the moving lift.
- A lift that moves unexpectedly can trap a hand or a rack.
- Separating a stuck switch from a short or board problem needs a meter and the wiring information.
Technical reference
- Document
- Operator Manual OV520 Rotating Rack Oven with Smart Touch Control (ML-132577 OV520G1, ML-132576 OV520G2, ML-132578 OV520E2, ML-132579 OV520E1)
- Maker documentation
- Baxter owner support
- Edition
- FORM 36764 Rev. D (September 2022)
- Models / control
- Baxter OV520G1, OV520G2 (gas), OV520E1, OV520E2 (electric) rotating rack ovens with Smart Touch control
- Section
- Troubleshooting - Error Screen Information (green/yellow/red error table), p. 26; LED Diagnostic Indicator Codes for the ignition module, p. 34
- 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 Baxter bakery oven error codes
Can I keep baking with E27?
The manual says the motor timed out, so the lift is not working normally. Contact a Baxter service technician.
How is E27 different from E25 and E26?
E25 and E26 mean one switch was never detected. E27 means both read active together.
Could debris cause E27?
It could if something holds a switch pressed, but the manual does not say so.
Need help with Baxter error code E27?
A technician confirms the cause on site and gives you the price in writing before any work starts.