Troubleshooting 11
Battery does not recharge
Inadequate external power supply
External power supply must be between 12.0 V
and 13.8 V
Fuse F100 or F101 defective Fit new fuse (8.7, page 17)
Fuse in vehicle plug defective Fit new fuse (8.13, page 22)
Snap-in connection between circuit board and
power pack not properly engaged
Make sure connection snaps in (8.8, page 18)
Power pack is not fully charged up despite
charging for 14 hours (top LED in voltage
indicator does not light up)
Charger does not meet specifications
Use AC adapter/charger plug WM 10750 or
charger WM 2610 (accessory)
Vehicle electrical system is not supplying 12.0 –
13.8 V
Check vehicle electrical system
Power pack damaged by being fully
discharged
Fit new power pack (8.6, page 16)
Power pack at end of service life
Top LED of voltage indicator lights up after
charging, but pump does not run when
powered by power pack
Internal connection faulty
Check internal connection between printed
circuit board (X100) and power pack (8.8,
page 18)
Fuse F101 defective Fit new fuse (8.7, page 17)
Fuse F2 frequently blows
Pump is often switched on under vacuum
conditions
Do not switch on pump under vacuum
Pump defective fit new pump (8.12, page 21)
Fault Cause Localize fault Remedy
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