BR/BD 100/250 R BP / RI TroubleshootingPage 119 / 171Service Manual 08.20076.1 Troubleshooting without displaysFaults not shown on thedisplaySuction beam cannot beraised/lowered– Check/replace fuse (F4).– Lifting mechanism blocked.– Test microswitch (S30, S31) using test mode/replace.– Test program selector switch (S9) test mode/replace.– Test lifting motor (M30) test mode/replace.– Check cable connections/remove defective cables.– Test lifting module printed circuit board (A4) test mode/replace.Brush head cannot be raised/lowered– Check/replace fuse (F4).– Lifting mechanism blocked.– Test program selector switch (S9) test mode/replace.– Test lifting motor (M20) test mode/replace.– Test lifting module printed circuit board (A4) test mode/replace.Brush motor won't start – Check/replace fuse (F3).– Test brush motor (M2, M3) using test mode/replace.– Check cable connections/remove defective cables.– Test cleaning module printed circuit board (A3) usingtest mode/replace.Poor braking effect – Test electromagnetic brake (Y1) using test mode/adjust/replace.– Test driving module printed circuit board (A2) using testmode/replace.Poor cleaning result – Check brush rollers for foreign bodies.– Test contact pressure of the brush rollers using testmode/adjust.– Suction performance too low (See chapter 6.1.3).– No or too little water supply (See chapter 6.1.2).– No or too little cleaning agent supply (See chapter 6.1.2).Solution
