Electrical system – 5000
Diagnostic and troubleshooting
Order number Date Valid from serial number T-code
226057-040 2005-09-23 914369- 675
© BT Europe AB Service Manual LWE130 12- 33
¤¤ ¤
(2+1)
CAPACITOR
CHARGE
Capacitors are not charged within 500 ms after Key switch is
closed / Check [PTC] resistor circuit. / If above is ok replace
transistor regulator.
VMN NOT OK VMN armature driver problem. Incorrect motor connection
s/c in motor windings to chassis.
Transistor regulator defect. / Check armature connections
[M1] are correct and no internal s/c exists. If above is ok
replace transistor regulator.
VFIELD NOT OK Field Voltage problem. Traction motor’s [M1] field winding s/c
or o/c.
Field winding incorrectly connected to the transistor regula-
tor. Transistor regulator defect. / Check field connections
[M1] are correct and no motor s/c exists. If above is ok
replace transistor regulator.
¤¤ ¤¤
(2+2)
NO FIELD CUR Field current abnormally low. Traction motor’s [M1] field
winding s/c or o/c.
Field winding incorrectly connected to the transistor regula-
tor. Transistor regulator defect. / Check field connections
[M1] are correct and no motor s/c exists. If above is ok
replace transistor regulator.
FW HIGH FIELD
CURR.
Field current abnormally high in drive wheel direction. Trac-
tion motor´s [M1] field winding s/c or o/c.
Field winding incorrectly connected to the transistor regula-
tor. Transistor regulator defect. / Check field connections
[M1] are correct and no motor s/c exists. If above is ok
replace transistor regulator.
BW HIGH FIELD
CURR.
Field current abnormally high in forks direction. Traction
motor´s [M1] field winding s/c or o/c.
Field winding incorrectly connected to the transistor regula-
tor. Transistor regulator defect. / Check field connections
[M1] are correct and no motor s/c exists. If above is ok
replace transistor regulator.
¤¤ ¤¤¤
(2+3)
STBY I HIGH Armature current abnormally high whilst in stand-by. Transis-
tor regulator defect. / Replace transistor regulator.
I=0 EVER Armature current abnormally low whilst driving. / Check
armature connections, check or replace carbon brushes.If
above is ok replace transistor regulator.
CURR. PROTEC-
TION
Armature current abnormally high whilst driving. / Check
armature connections for s/c. If above is ok replace transis
-
tor regulator.
Table 11: List of error codes
Status
LED code
Error code
description
Possible cause / Hint or Solution
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