Troubleshooting With Displays - Kärcher BR 100 R Service Manual

BR/BD 100/250 R BP / RI
6.2

Troubleshooting with displays

Procedure:
– When a fault display appears, a key switch
reset should first be performed. Before the key
switch is switched on again, wait for a time of
approx. 10 seconds to empty the energy stora-
ge device (condensers), which guarantees a
clean system restart. If the fault continues,
proceed according to the numbered action
sequence of a fault group of the following ta-
bles (pages 130-143).
– If a module delivers several faults, only the last
fault in queue of the particular module is shown
in the display! The fault history of a module
may be called up immediately via menu item
"diagnostics information" at a fault event depth
of 6 per module or a later time.
– If faults and warnings of various modules ap-
pear, they will be displayed at an interval of
4 seconds in the sequence of their occurrence.
If the fault buffer has been processed, the fault
display is repeated.
Caution!
Since warnings are only displayed once, they
will disappear when the fault display is
repeated!
Service Manual 08.2007
Note:
Frequently, a single event can cause faults
from many modules!
Example: Main relay coil (K1) short-circuits.
Faults and warnings K1/131, F1/121, H1/
631, Z1/631 are generated! Decisive is that
the cause always is a fault, therefore has a
number circuit "0xx" or "1xx". The main relay
coil short-circuit "k1/131" in this example has
the result that the drive module A2 does not
receive any load circuit voltage (the
contactor does not activate). Drive module
A2 then reports the self-test fault "F1/121".
– Warnings (highlighted in the following tables
on pages 130-143) affect the operation of the
machine in various ways. A short-circuit in a
horn, for example, is relatively harmless and
does not require an immediate replacement of
drive module A2 or the horn itself. However,
periphery faults of the horn module are critical,
for example, if the limit switches of the suction
beam lifting motor deliver contradictory resul-
ts. This prevents the suction beam from mo-
ving, which considerably inhibits the cleaning
process. Both cases show that warnings re-
quire various sensitive reactions.
Troubleshooting
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