Problem Possible causes Solution
Example: If only the lift is defective, it is
still possible to move the back rest and
thigh rest.
• Perform RESET (see Part B: Control unit –
Reset » 62); if it occurs again: have drive
system checked. Inform your operator if re-
pairs are necessary
Height adjust-
ments and tilting
not possible or on-
ly in one direction;
signal tone sounds
during adjustment
• Control unit has “forgot-
ten” the drive positions
• Connecting cable defec-
tive
• Perform initialisation; see Part B: Initialis-
ing the control unit » 60
• Replace connecting cable
Height adjustment
and tilting do not
work; signal tone
sounds during ad-
justment
• Drive(s) defective
• Connecting cable defec-
tive
• Perform RESET (see Part B: Control unit –
Reset » 62); then test each function inde-
pendently to find out which drive is defec-
tive
• Replace connecting cable
Troubleshooting
34 Part C: Care staff and residents
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