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Etude Plus
8 Troubleshooting
8.1 Troubleshooting electrical system
Symptom
Mains indicator does not light up
Mains indicator lights up, but the motor is not
running. The relay in the control unit makes a
clicking noise.
Mains indicator lights up, but the motor is not
running. No relay sound is heard from the
control unit.
Control unit is in order except for one
direction on one channel.
Motor is running, but the piston rod does not
move.
The motor cannot lift full load.
Motor noise, but no movement of piston rod.
Piston rod operates inwards and not outwards.
14
Possible cause
Mains is not connected
Fuse in the control unit is blown
Control unit is defective
Motor plug is not fully inserted into the
control unit.
The motor is defective.
Motor cable is damaged.
Control unit is defective
Control unit is defective
Hand control is defective
Control unit is defective
Hand control is defective
Motor is damaged
Remedy
Connect mains
Replace the control unit
Replace the control unit
Insert the motor plug properly into the
control unit
Replace the motor
Replace the cable
Replace the control unit
Replace the control unit
Replace the hand control
Replace the control unit
Replace the hand control
Replace the motor
1567454-A
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