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Stiltz Basic Troubleshooting

Stiltz Duo & Trio Alta Troubleshooting Guide
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Ryan Penn
Updated 1 year ago
Stiltz Duo/ Trio Alta COP Function Lights

Most of the difficulties encountered, are associated with the safety features built into the Stiltz Duo/Trio Alta homelifts. These features are in place to ensure the safe use and comfort of users of the lift. Below is a troubleshooting guide for all lifts within the Stiltz Range.


1. The lift will not operate.

a. The most common cause is an obstruction of the light curtain, which guards the lift cab entrance. This can easily be caused by a handbag or arm. The light curtain (LC) light will flash.

Clear the obstruction and be vigilant that there is no obstruction periodically blocking the light curtain. To prevent this, stand closer to the rear wall of the lift.

b. The cab operating panel (c.o.p.) key switch has been switched 'off'.

Turn the key 'on'. The 'on'

position is when the key is in the horizontal position.

c. The COP emergency stop button has been depressed.

The stop button is a safety stop button that requires turning clockwise once pressed. Ensure the button is pressed, then turn clockwise until the button 'pops' out. Turn the key switch 'off' and then back to 'on' - to reset lift.

d. The lift cab door latch is making poor contact with the electric strike tongue.

Move your body position in the lift cab and try moving again. Slightly lift and/or slightly push/pull the lift cab door. Call Mobility123 to arrange a service visit.

e. The main power, from the home to the lift is off. This is easily identified, as the red main switch indicator lamp, the in ceiling towards the rear of the lift, is off.

Emergency battery lowering will be activated, immediately after the power outage. The lift will go downwards from the upper level to the lower level, if the power goes out. If the lift is at the lower level, it will not move upwards until the power is restored. If the power is on in the rest of the house, check the indicator light on the ceiling of the lift. If this is off, wait until power is restored.

f. Someone has tried to manually lift the lift cab.


Call Mobility123. The lifting mechanism may be displaced and will require resetting. They will speak to you and ask for some clarity and will suggest the best course of action.

g. The lift has passed either of its lower or upper landing stopping points.

The door will open, and you can exit the lift. Call Mobility123 to arrange a service visit.

2. Both light curtain (LC) and overload (OL) lights, on the cab operating panel (COP) are flickering and flashing alternatively.

a. The over-speed sensor has failed.

Call Mobility123 to arrange for a service visit.

3. Both light curtain (LC) and overload (OS) lights, on the cab operation panel (COP) are flickering and flashing alternatively.

a. The battery backup system is activated.

Ensure the main power is connected. Ensure the switch in the lift cab is on (glowing red). Call Mobility123 to schedule a service visit.

4. The lift cab will not operate from the remote controls.

a. Remote control batteries may need to be replaced.

Replace batteries. All lift remote controls use 3x AAA batteries.

b. The receiver may not be receiving the signal from the remote controls.

Move to within 10 feet of the lift. This is the optimum range of the remote controls.

5. The lift cab will not travel downwards but will only travel upwards.

a. There is an obstruction under the lift cab.

Remove obstruction before attempting to use the lift.

6. The lift cab will not travel upwards but will only travel downwards.

a. There is an obstruction on the shaft lid or the lift cab ceiling

Remove obstruction before attempting to use the lift.

b. The main power is off, and the lift cab is operating on emergency battery power.

Wait until the main power is restored.

c. The safety cover would be catching on the guides as it is being lifted.

Safely observe from the upper floor to see if the cover is tilting instead of coming up level.

7. The lift cab is moving upwards or downwards independently.

a. Landing remote controls are often kept in people's pockets. This can cause the buttons to be pressed unintentionally.

Keep the landing remote controls at each landing.

8. The downlights in the lift cab ceiling are dim and the remote controls work intermittently or not at all.

a. The lift cab ceiling lights only time out when parked at the top and the bottom floors. If between floors the ceiling light will drain the battery.

Ensure the lift is parked at the top or bottom, not mid travel.

b. The lift battery is running low.

Call Mobility123 to arrange a service visit.

9. The door will not open.

a. The lift is not at the landing.

Use the c.o.p. buttons or the remote controls to move the lift to the correct floor. Ensure the control button is being pressed until the lift comes to a complete stop.

b. The door is hitting the threshold of the upstairs floor.

Drive the lift down using the COP buttons or remote controls. Ensure the bottom is depressed until the lift comes to a complete stop.

10. A buzzer is sounding.

a. The stop button is pressed.

Turn the stop button clockwise until it pops out toward you. Reset the lift by turning the key switch off and then back on again.

b. The backup battery system has a fault.

Call Mobility123 to arrange a service visit.

11. A humming sound from the relays on the electrical panel.

a. Too much voltage is being supplied to the electrical panel.

Check the voltage with a meter, the 110v step-up transformer may be set to 230v input not the required 115v input switch.

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