Electrical systems – 5000 LPE 240
Diagnostic and troubleshooting
Order number Date Valid from serial number T-code
225553-040 2005-05-11 723984- 660, 661, 662, 497
© BT Europe AB Service Guide LWE180, LWE200, LPE200, LPE240 10- 47
10.9 Diagnostic and troubleshooting
10.9.1 Error codes and troubleshooting
The table below depicts the error codes that may be shown by the STA-
TUS LED or read using the handheld terminal.
STATUS LED Handheld ter-
minal display
Explanation Possible cause
LED off - No voltage or
defective regulator
Burnt fuse, bad contact, not con-
nected, defective regulator
LED on - Defective regulator Defective regulator
1,1 ¤ ¤ CURRENT
SHUNT FAULT
Built-in current
shunt defective
Armature current sensor fault in motor
controller.
1,2 ¤ ¤¤ HW FAILSAFE Power amplifier
CAN-timeout
Motor controller reports unexpected
loss of data flow from tiller head
1,3 ¤ ¤¤¤ M- SHORTED Internal M- short to
B-
Problem with switch transistor in arma-
ture circuit inside motor controller
3,1 ¤¤¤ ¤ CONT COIL/FLD
SHORT
Too high current for
contactor feeding
or shorted field
winding
Attempt to drive more current than
specified from outputs.
Problem to regulate field currrent.
Internal controller fault.
3,3 ¤¤¤ ¤¤¤ FIELD OPEN Open field winding Shuntfield open, harness broken,
motor controller defect.
4,1 ¤¤¤¤ ¤ LOW BATTERY
VOLTAGE
Low battery voltage 1. Battery voltage <17 volts
2. Corroded battery terminals
3. Loose battery or regulator connec-
tions
4,2 ¤¤¤¤ ¤¤ OVERVOLTAGE Overvoltage 1. Battery voltage > 33 volts
4,3
¤¤¤¤ ¤¤¤ THERMAL
CUTBACK
Over-/under-tem-
perature reduction
1. Temp. >85
o
C or < - 25
o
C
2. Truck overloaded
3. Wrong installation of transistor
regulator
4. Operation under extreme conditions
MODEL
STATUS
SERIAL
VOLTAGE
CURRENT
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