Glossary term
emergency stop
A latching switch that cuts the drive immediately and holds the equipment stopped until it is released.
What it means
An emergency stop breaks the safety circuit directly, so the machine stops at once. Because it latches, the equipment stays stopped until the button is pulled or twisted back out. A stop left pressed looks exactly like a dead lift, which is why it is worth checking first.
Where you see it
On stairlift carriages, platform lift controls, and inside lift cars or on the car roof. Some platform lifts have one at each landing station.
How it works
The switch is wired in series with the other safety contacts, so nothing electronic can override it. Releasing it restores the circuit, though some controllers then need a call to be re-entered.
On some equipment the stop also isolates the battery supply, which is why a stairlift left on stop can be found flat later.
Why it matters
A stop knocked by a bag, a vacuum cleaner or a child is one of the most common causes of an apparently dead unit, especially on home equipment.
Commonly confused with
An emergency stop is not the same as the alarm button. The stop cuts drive and holds the equipment still; the alarm calls for help. On many lifts the stop is only inside the car or on the car top, and on stairlifts it is often the same as turning the key or switch to off. Pressing stop does not summon anyone.
Wear, service and lifespan
Stop switches are simple, which is why they are reliable, but they latch and can be left latched by accident. Every service visit tests that the stop actually cuts drive and that releasing it restores normal running. A stop that feels loose, sticky or does not latch should be reported rather than relied on.
Signs to watch for
- The unit is completely unresponsive.
- A red button is pressed in or a switch is out of position.
- The alarm still works but the drive does not.
- The unit worked and then stopped with no warning.
- Batteries flat after a period of non-use.
Troubleshooting emergency stop
The lift is dead but lighting and the alarm still work
What it usually means: Very often the stop switch is latched in
Safe check: Look at the stop control and see whether it is pulled out or pushed in, and report what you find.
The stairlift will not start and the switch is at off
What it usually means: The isolating switch or key switch is doing exactly its job
Safe check: Turn the key or switch to on and try a single short travel.
The stop does not hold the lift when tested at service
What it usually means: A failed switch or wiring fault
Safe check: This is an engineer test only. If you were told it failed, keep the lift out of use.
How to report it
Say whether anything is latched, who pressed it and why, and whether releasing it brought the lift back. If someone pressed stop during an entrapment, say that plainly, because the rescue procedure depends on knowing the drive is disabled.
Ask us about emergency stop on your lift
Tick anything you can see or hear from where you normally stand, add a note in your own words, and we will put it into the message below for you. Never open, force or enter any part of the lift to check.
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Related terms
Definitions that usually come up alongside emergency stop when you are describing a fault.
- controller
The electronic brain that reads calls and safety signals, drives the motor and doors, and records faults.
Controls and electrics
- key switch
A keyed switch that isolates or enables the equipment, used to prevent unauthorised use.
Controls and electrics
- obstruction sensor
Any sensor that stops travel when something is in the way — under a stairlift footplate, beneath a platform, or across a doorway.
Safety devices
- entrapment
A passenger stuck in a lift car between floors or behind closed doors, released only by trained responders.
Safety devices
- charging strip
Contacts on the stairlift rail that charge the batteries whenever the chair is parked correctly.
Controls and electrics