![background image](http://html.mh-extra.com/html/karcher/bd-550-bat/bd-550-bat_product-information_655709022.webp)
BR/BD 550
New Product Information
Service-Information-
International
No. 90/95 dated 18 Dec 1995
_________________________________________________________________________________________________
International Service Information
Page 22/33
3. Troubleshooting – BR/BD 550 (battery-powered unit)
Problem
Cause
Remedy
Defective or misadjusted drive
control rotary potentiometer
(R1).
Check rotary potentiometer and/or adjust
setting. Replace if required.
Defective drive control module
(A1).
Replace drive control module.
Main motor does not receive
power.
Check connecting cables.
Defective drive motor (M1).
Check drive motor. Replace if required.
3. Unit will only move
either forward or
backward.
Defective or misadjusted drive
control microswitch (S4 or S5).
Check microswitch and/or adjust setting.
Replace if required.
Defective or misadjusted drive
control rotary potentiometer
(R1).
Check rotary potentiometer and/or adjust
setting. Replace if required.