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Troubleshooting Actuators/Lifting columns
Troubleshooting Electronics
Symptom Possible cause Action
No motor sound or movement of piston rod
- The actuator is not connnected to the control box
- Blown fuse in the control box
- Cable damaged
- Connect the actuator to the control box
- Fuse must be changed
- Send actuator for repair
Excessive electricity consumption - Send actuator for repair
Motor runs but spindle does not move - Gear wheel or spindle damaged - Send actuator for repair
Actuator cannot lift full load
- Clutch is worn
- Motor is damaged
- Send actuator for repair
Motor sound but no movement of piston rod - Send actuator for repair
No signal from Reed or Hall switch - Send actuator for repair
Motor runs and quick release does not function
or is noisy
- Declutching arm turns less than approx. 75 °C - Adjust cable
Piston rod will only move inwards and not outwards - Safety nut has operated - Send actuator for repair
Motor runs too slowly or does not give full force
- Insufficient power supply
- Voltage drop in cable
- Increase power supply
- Thicker cable necessary
Symptom Possible cause Action
Power indicator does not light up
- Not connected to mains - Connect to mains
- The fuse has blown
- Replace fuse, if the system is prepared for external
fuse replacement, or send the system for repair
- Defective power cable
- On control boxes with exchangeable power cable,
change the cable.
- On control boxes with fixed cable, send it for repair
- Control box defective - Send control box for repair
Power indicator lights up, but actuator does not run
- Actuator plug not pushed
into control box properly
- Push actuator plug properly into control box
Control box relays are clicking - Actuator defective
- Replace actuator
- Defective control box
- Replace the control box
Power indicator lights up, but actuator does not run - Control box defective - Send control box for repair
No relay noise is heard from control box
Not valid for CB20/CB6S OBF/CB16 OBF
- Hand control defective - Send hand control for repair
Control box completely dead on battery and no relay
clicking
- Battery completely flat - Charge battery
- Battery defective - Replace battery
Actuator does not run on battery, but relay clicking can
be heard
- Actuator plug not properly
pushed into control box
- Push actuator plug properly into control box
- Actuator defective
- Replace actuator
- Replace control box
- Control box defective
Control box okay apart from one direction on one channel
- Hand control defective
- Control box defective
- Send hand control for repair
- Send control box for repair
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