12- 34 Service Manual LWE130 © BT Europe AB
Electrical system – 5000
Diagnostic and troubleshooting
T-code Valid from serial number Date Order number
675 914369- 2005-09-23 226057-040
¤¤¤ ¤
(3+1)
TH. PROTECTION Working temperature of transistor regulator is abnormally
high or low (outside range >70°C or <10°C). Transistor regu
-
lator defect. / First determine whether truck’s operating envi-
ronment and conditions are normal! Allow truck to regain a
normal temperature and attempt normal use. If fault persists
replace transistor regulator.
¤¤¤ ¤¤¤
(3+3)
VACC NOT OK Problem with speed potentiometer[R1].
[L1] not in neutral position when truck switched on. Fault in
potentiometer wiring or in potentiometer. Incorrect calibration
values. / Check wiring to potentiometer. Check and if neces
-
sary replace potentiometer. If necessary calibrate potentiom-
eter. See “12.10.6Calibrating the speed potentiometer” on
page 42.
¤¤¤ ¤¤¤¤¤
(3+5)
INCORRECT
START
Starting sequence incorrect for travel. Emergency reverse
switch [S20] operated during start. o/c in main contactor coil
circuit [K10]. Tiller switch [S10] operated during start. /
Check wiring to [S10] & [S20]. Adjust or replace these
switches. Check wiring to [K10] coil & check or replace[K10].
¤¤¤ ¤¤¤¤¤¤
(3+6)
FORW+BACK Conflicting travel direction order. / Check wiring to [S15] &
[S16], check operation of [S15] & [S16].
¤¤¤ ¤¤¤¤¤¤¤
(3+7)
BELLY SW
ERROR
No connection to emergency reverse switch [S20]. / Check
wiring to [S20], Check 3K3 resistor.
¤¤¤
¤¤¤¤¤¤¤¤
(3+8)
CHECK UP
NEEDED
A scheduled service is due!
Time since last service > CHECK UP HOURS. The service
counter may not have been reset following the previous
service visit. / Establish service requirements and situation.
Perform the scheduled service and reset service counter as
appropriate.
See Reset service counter (CHECK UP DONE) on page 39.
¤.............¤
32 short
BATTERY LOW Battery charge less than 50% of nominal value. / Charge bat-
teries.
Table 11: List of error codes
Status
LED code
Error code
description
Possible cause / Hint or Solution
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