Operation
24/30
4156 EN
6.9
Faults and Error Messages
The charger reports faults via the graphic display and the charging status light. The
following table gives an overview of the various fault causes and how to rectify them.
Graphic display
message
Charge
Status Light
Cause
Remedy
Red
Max. charge time
exceeded
Charge complete
Max. charge
capacity exceeded
Charge complete
The max. permissible
charge time has been
exceeded.
The max. permissible
charge capacity has
been exceeded.
Safety cutout
Battery capacity too great
for charger
Battery faulty
Notify battery service
department
Red
Deviation
I max!
Charge complete
Too much current from
power part. Control
system damaged.
Charger error
Notify service
department
Red
Battery
disconnected during
charging
Battery disconnected
without pressing the ‘S’
key.
Operating error
Press ‘S’ key before
disconnecting the battery,
see 6.5.
Check charging lead
contacts.
Display works
normally
Compulsory change
Re-charge!
The max. permissible
main charge time has
been exceeded.
Safety function!
Battery capacity too great
for charger
Notify battery service
department
Red
Mains failure
Mains disconnected
Display during
mains failure
Mains failure
Mains fuse faulty
Check / replace mains
fuse
Display works
normally
Deviation
I min!
Charge current less than
controller specification
Notify service
department
Note: the charger does not
cut out.
Red
Overvoltage cutout
Overvoltage
Check battery
voltage
Output voltage greater
than 3.0 volts/cell
Notify service
department
Red
Low voltage cutout
Low voltage
Check battery
voltage
Output voltage less than
minimum cell voltage..
Wrong battery connected.
Battery depleted. Activate
depletion charge start.
Notify battery service
department
Red
Module failure
Module failure 1,2...n
Display flashes
alternately with
current charge
status, see 6.1.1.
Power module failure
Notify service
department
