12- 32 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
12.9.3 List of error codes
NOTE!
It is important to understand that certain Status LED codes can be
caused by different error codes. The most accurate diagnosis will be
made when using the hand terminal.
Table 11: List of error codes
Status
LED code
Error code
description
Possible cause / Hint or Solution
¤
(1)
Watch-dog Electronic card and/or software failure. / Replace transistor
regulator.
EEPROM KO EEPROM or Logic problem. / Replace transistor regulator.
¤¤
(2)
EB DRIVER
SHORT
Output for electromagnetic brake coil [Y1] s/c to -BATT. /
Check wiring to brake coil.
EB DRIVER KO Output for electromagnetic brake coil [Y1] not functioning. /
Replace transistor regulator.
¤ ¤¤
(1+2)
CONTACTOR
DRIVER
Main contactor[K10] not responding when driven. / Check
Main contactor coil and wiring.
DRIVER
SHORTED
The main contactor coil is either s/c, o/c or not connected.
Main contactor o/p s/c to -BATT. / Check Main contactor coil
and wiring.
CONTACTOR
CLOSED
Main contactor tips [K10] are fused.
Field circuit problem.
Problem detected by the safety micro processor. / Check
Main contactor tips are not fused. Check field winding con
-
nections. If above is ok replace transistor regulator.
CONTACTOR
OPEN
Unexpected drop in battery voltage after Main contactor
closes. / Check Main contactor and wiring. Check battery
charge condition.
¤ ¤¤¤
(1+3)
POWER FAILURE
#1
s/c detected on driver output to main contactor [K10] or
brake coil [Y1]. / Check for s/c in main contactor and brake
coil circuit. If above is ok replace transistor regulator.
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