Kärcher BR 100 R Service Manual page 140

Troubleshooting
6.2.3 Lifting module (A4) and Cleaning module (A3) error messages
Module Fault
classification
Power electronic
C
unit for lifting
module (A3) is
too hot
Limit switch
A4/X5-1, 5, 8
in contradiction
H
Limit switch A4/
X4-1, 5, 8 in
contradiction
Voltage dip in
lifting motor
module's electro-
nic power unit
Power release for
C
motors is not set
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Display code
Controls are 1. Switch off key switch (S0).
too hot!
2 Let control unit cool for at least 5 minutes.
.
Cool off!
3. Switch on key switch (S0) and clearly reduce at
brush pressure at a rough floor, if necessary.
4. If the error remains, replace A3 clone in question.
Hy/621 1. Check if limit switch lines (S20, S21) completely
contact A4/X5-1, 5, 8.
2. Check if the limit switch is correctly assigned to
A4/X5-5 and A4/X5-8 and root A5/X5-1.
3. Check, if one or both limit switches are crossed.
4. Check, if a short circuit exists between the limit
switch lines.
5. Check if the lifting motor (M20) is defective or
mechanically blocked.
6. Replace A4 clone concerned.
Hy/622 Refer to Hy/621, however, for A4/X4-1, 5, 8.
(S30,S31).
Hy/631 1. Check if the supply cables of fuse (f4) to the lifting
module are properly connected.
2. Check if the battery is deep discharged.
3. Check, if main relay (K1) is closed and if relay coil
lines are completely connected with head CPU
(A1).
Cy/631 Non-critical error. Please inform the developer.
BR/BD 100/250 R BP / RI
Action
Service Manual 08.2007