7 – 18 Repair manual SWE100, 120, 120L, 120S, 140, 140L, 200D © BT
Troubleshooting
Error codes
T code Valid from serial no. Date Order no.
841×842×843 6061850- 2012-08-30 258946-120
Hydraulic system
4.001
Lifting prevented until the analogue
controller for lifting and lowering is back in
the neutral position.
The analogue controller for lifting and
lowering was not in the neutral position
at start-up. (Not applicable for
SWE100).
Do not actuate the speed control when
starting the truck.
Check:
• the cable in the handle
• the potentiometer. If defective,
replace the potentiometer.
4.101
Safety speed, raising and lowering the
forks not working.
The analogue signals for lifting and
lowering show abnormal values.
Do not actuate the speed control when
starting the truck.
Check:
• the wiring in the handle
• the potentiometer. If defective,
replace the potentiometer.
4.102
Safety speed, raising and lowering the
forks not working.
The handle type does not match the
setting of factory parameter 1023
“Controls for hydraulic functions”.
Check the setting of factory parameter
1023 and compare with the handle type
on the truck.
4.125
Safety speed, raising and lowering the
forks not working.
Pump motor current feedback remains
zero when the pump motor operates.
Defective current sensor in the
transistor regulator. Change transistor
regulator.
4.126
Safety speed, raising and lowering the
forks not working.
Excessive pump motor current
feedback at start-up and in holding
mode.
Defective current sensor in the
transistor regulator. Change transistor
regulator.
Code Event Possible cause
Action
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