2015.04.16
Flow2 - Stairlift
Tab 06: Systematic fault finding
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Error code
F19
Error message
Speed too high during ELD use
Description
Measured speed more than 130% from normal ELD speed (1112 rpm)
Safety action
Emergency stop
Possible solution
Error suppressed in
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Error code
F20
Error message
Software inconsistency
Description
Safety action
Disable main drive / Stop level drive / Stop swivel drive
Possible solution
(re-)install software
Error suppressed in
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Error code
F21
Error message
Low battery voltage
Description
Battery voltage <19V while driving upwards
Safety action
Normal stop
Possible solution
Lift can be driven down to any halt position where the batteries have to be
charged to a minimum voltage before the lift can be driven upwards again.
While the lift is being charged F76 is shown in the display. The minimum
voltage is set at 25V by default but can be modified in mode -9-
Error suppressed in
Mode -3- / ELD mode
Error code
F22
Error message
Battery failure
Description
Battery voltage < 14V or > 30V
Safety action
Disable main drive / Stop level drive / Stop swivel drive
Possible solution
Replace batteries
Error suppressed in
ELD mode
Error code
F23
Error message
Brake circuit failure
Description
This indicates that the main motor brake does not switch on and off properly.
This can be the result of defective components on the control board.
Safety action
Disable main drive
Possible solution
Replace the control board.
Error suppressed in
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Error code
F24
Error message
Hardware error
Description
All hardware errors that do not generate their own code
Safety action
Disable main drive / Stop level drive / Stop swivel drive
Possible solution
Error suppressed in
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