Kärcher BR 100 R Service Manual page 141

BR/BD 100/250 R BP / RI
6.2.4 Head CPU (A1) error messages
Module involved:
Module clone:
Display code:
Module Fault
classification
Actuator main
relay (K1) short
circuited
Errors in multi-
secured parame-
ter memory
No module
detected in bus.
Bus is mal-
functioning
BUS ATTN
– is missing du-
ring self-test
– failed during
operation
Service Manual 08.2007
Head CPU (A1)
There is only this bus master
F1/xxx for faults/warnings of head CPU
Display code
K1/021 1. Verify that the main relay coil (K1) is connected to
2. Check that fault voltages, for example, are con-
3. If fault remains, replace A1.
K1/101 1. Perform key switch (S0) reset.
2. If fault remains, replace A1.
K1/111 1. Check if bus plugs A1/X3 and A1/X4 are connec-
2. Check if bus lines A1/X3-2 after A1/X4-2 AND
3. Search for errors in lines No. 2 and No. 5 of all
4. Test single module coupling, connect head CPU
5. If fault remains, replace A1.
K1/112 1. Check if bus plugs A1/X3 and A1/X4 are connec-
2. Check if the bus plug is properly connected to all
3. Search for errors in line No. 6 of all bus cables/
4. Test single module coupling, connect head CPU
5. If fault remains, replace A1.
Action
A1/X11-3 and A1/X11-4.
nected to the chassis that is short circuited
against battery voltage (supply line) via contact
closure and eliminate these.
ted.
A1/X3-5 after A1/X4-5 are completely connected.
bus cables and repair.
(A1) with only one random module as direct bus.
If error is replaced by another, test with other
modules until the malfunctioning module is found.
Replace the malfunctioning module.
ted.
modules.
repair.
(A1) with only one random module as direct bus.
If error is replaced by another, test with other
modules until the malfunctioning module is found.
Replace the malfunctioning module.
Troubleshooting
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