® Copyright ATH-Heinl GmbH & Co. KG, All rights reserved / Misprints and technical changes reserved / As of: 2021-09
Manufacturer ATH-Heinl GmbH & CO.KG
- 27 -
4.5
Troubleshooting / Error Display and Solutions
Symptoms
Cause
Solution
Lifting Problems
Lifting platform does not lift
when button is pressed (motor
does not run)
Damage to the motor
Check motor and replace if
necessary
Blown fuses from e.g. voltage
fluctuations
Remedy the causes and replace
the fuses
Defective button and/or
contact
Replace button and/or contact
Defective main switch and/or
contact
Replace main switch and/or
contact
Defective or insufficient supply
line
Replace cable
Fluctuating or incorrect input
voltage
Check power
Defective motor contactor
Replace motor contactor
Thermal relay has tripped
Check thermal relay and motor
Limit switch defective or
blocked
Check limit switch and replace if
necessary
Lifting platform does not lift
when button is pressed (motor
runs)
Hydraulic oil shortage
Refill oil
Oil filter blocked
Clean the oil filter
Oil leakage
Replacement of damaged
components
Opened lowering valve
Check and replace the lowering
valve if required
Motor rotates in wrong
direction
Replace phases
Broken gear pump
Check the pump and replace if
necessary
Permissible load has been
exceeded
Work within the specified load
Pressure relief valve set too
low
Set pressure relief valve to
maximum load
Lifting platform lifts jerkily
Not enough space between
rails
Distance between rails and
guide must be 1.5 - 2.5 mm
Air in hydraulic system
Bleed the hydraulic system
Contaminated hydraulic oil
Change the hydraulic oil
Slideways are not lubricated
Lubricate the slideways
Lifting platform continues to lift
after releasing the button
Defective button
Replace the defective button
