- Networks
- Garage door openers
AMP
BFT AMP on sliding gate opener: obstacle or torque reversal
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
High
Quick answer
The AMP message on a BFT Deimos BT sliding gate opener display appears when the leaf stops and reverses because the amperostop obstacle detector triggered or the motor torque setting is too low. Clear the track safely and call an installer if it persists.
Safety first
Stop and check this first
- Never raise motor torque to mask a binding gate or disable obstacle detection: during Autoset the obstacle detector is inactive, so only a qualified installer may run it with the area clear.
- Keep people, pets, and vehicles clear of the moving gate, and never operate the manual release unless the leaf is stationary and cannot roll uncontrolled.
Safe checks you can perform
- Check the entire gate travel path for visible obstacles after AMP
- Inspect the ground track for stones or debris along the full stroke
- Look at the sliding wheels on the leaf from a safe distance
Leave these tasks to a qualified professional
- Do not attempt this professional task: Inspect leaf rolling friction, sliding wheels, and rack-to-pinion mesh
- Do not attempt this professional task: Adjust motor and slow-down torque parameters or run a new Autoset
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Inspect leaf rolling friction, sliding wheels, and rack-to-pinion mesh
What they doThe installer verifies that the sliding track is clean across the entire stroke, the sliding wheels are undamaged and properly positioned, and the rack and pinion mesh smoothly without binding.
They must show youthe mechanical movement of the leaf and the condition of the wheels, guide rollers, and rack along the full travel.
In writingwhich mechanical binding point or track fault caused the AMP reversal or consecutive UL ALARM lockout.
Adjust motor and slow-down torque parameters or run a new Autoset
What they doThe technician adjusts Motor 1/2 torque and slow-down torque in the parameters menu or launches a new Autoset from the closed position while verifying compliance with impact force limits.
They must show youthe torque parameter values on the board display and a complete open/close cycle after running Autoset.
In writingthe final torque settings recorded on the board and confirmation that obstacle reversal still meets safety standards.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Check the entire gate travel path for visible obstacles after AMP
- Who:
- you, with the sliding gate completely stopped and remotes put away.
- How:
- walk along the opening and closing path to verify that no vehicle, bin, tool, or object is standing in the way of the sliding leaf.
- Result that matters:
- rule out an external obstacle that triggered the amperostop reversal and AMP message.
- If an object was blocking the leaf and removing it while stationary restores normal travel:
- note where the obstruction occurred.
- If nothing is blocking the driveway path:
- proceed to inspect the ground track for stones or debris.
- Evidence to keep:
- exact point along the gate stroke where the leaf stopped and reversed with AMP.
Evidence: BFT Deimos BT Quick Reference Guide (Version 1.3) · BFT Deimos BT UL 24V Sliding Operator Installation and User Manual (D811419_07)
Inspect the ground track for stones or debris along the full stroke
- Who:
- you, making sure nobody can activate the opener while you inspect the floor rail.
- How:
- check that the sliding track is clean and free from gravel, mud, or twigs across the entire leaf stroke, as required by the BFT manual.
- Result that matters:
- remove rolling resistance on the rail that triggers AMP or a double-trip UL ALARM lockout.
- If gravel or dirt was packed into the track and sweeping it clear with the gate stopped resolves AMP:
- keep the rail clean.
- If the floor track is clean across the whole stroke but AMP still appears:
- visually inspect the sliding wheels next.
- Evidence to keep:
- condition of the floor track along the entire opening and closing travel.
Evidence: BFT Deimos BT Quick Reference Guide (Version 1.3) · BFT Deimos BT UL 24V Sliding Operator Installation and User Manual (D811419_07)
Look at the sliding wheels on the leaf from a safe distance
- Who:
- you, looking from outside without dismantling hardware or placing hands near moving parts.
- How:
- visually check that the sliding wheels under the gate leaf are undamaged and properly positioned along the floor track.
- Result that matters:
- complete the third customer-safe check listed in the BFT Deimos BT manual for repeated obstacle trips.
- If the wheels look intact and centered on the rail but AMP continues:
- call an installer to check torque settings or run Autoset.
- If a wheel is derailed, broken, or rubbing against the guide:
- keep the gate closed and call a professional.
- Evidence to keep:
- visual condition of the sliding wheels and leaf alignment on the track.
Evidence: BFT Deimos BT Quick Reference Guide (Version 1.3) · BFT Deimos BT UL 24V Sliding Operator Installation and User Manual (D811419_07)
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Networks
- Brand
- BFT
- Product type
- Garage door openers
Known code variants
- ALARMA UL AMP
- AMP
- BFT AMP
- Deimos BT AMP
- UL ALARM AMP
What it means
In the BFT Deimos BT and Deimos BT UL 24 V sliding operator Quick Reference Guide and installation manual (D811419_07), AMP displayed when the gate starts reversing means either an obstruction was detected by the amperostop sensor or the motor torque setting is too low. If the obstacle detection device triggers twice in a row without reaching a limit switch, the UL ALARM (terminals 14-15) activates and stops all manoeuvres until reset. Other BFT models may differ, and AMP alone never proves the motor or control board has failed.
Warnings and stop conditions
- Highsource verified
Never raise motor torque to mask a binding gate or disable obstacle detection: during Autoset the obstacle detector is inactive, so only a qualified installer may run it with the area clear.
Evidence: BFT Deimos BT Quick Reference Guide (Version 1.3) · BFT Deimos BT UL 24V Sliding Operator Installation and User Manual (D811419_07)
- Mediumsource verified
Keep people, pets, and vehicles clear of the moving gate, and never operate the manual release unless the leaf is stationary and cannot roll uncontrolled.
Evidence: BFT Deimos BT Quick Reference Guide (Version 1.3) · BFT Deimos BT UL 24V Sliding Operator Installation and User Manual (D811419_07)
Symptoms and causes
Probable causes · in order
- Physical obstruction or debris along the sliding gate trackCommon
Stones, gravel, ice, leaves, or an object in the driveway resist leaf movement and cause the amperometric sensor to stop and reverse the gate with AMP on screen.
Evidence: BFT Deimos BT Quick Reference Guide (Version 1.3) · BFT Deimos BT UL 24V Sliding Operator Installation and User Manual (D811419_07)
- Damaged or misaligned sliding wheels on the gate leafPossible
Worn, binding, or off-track sliding wheels increase mechanical friction along the stroke until the amperostop threshold trips.
Evidence: BFT Deimos BT Quick Reference Guide (Version 1.3) · BFT Deimos BT UL 24V Sliding Operator Installation and User Manual (D811419_07)
- Motor torque or slow-down torque parameter set too lowPossible
The Motor 1/2 torque or slow-down torque settings in the parameters menu are set below normal gate friction or require a fresh installer Autoset cycle.
Evidence: BFT Deimos BT Quick Reference Guide (Version 1.3) · BFT Deimos BT UL 24V Sliding Operator Installation and User Manual (D811419_07)
Virtual technician
Does AMP still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
BFT Deimos BT Guía de Referencia Rápida (Versión 1.2)
BFT Automation · 2026 · official_doc
- 2
BFT Deimos BT Quick Reference Guide (Version 1.3)
BFT Automation · 2026 · official_doc
- 3
BFT Deimos BT UL 24V Sliding Operator Installation and User Manual (D811419_07)
BFT Automation · 2026 · official_doc
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