Troubleshooting - GMC GDD12 Manual

Troubleshooting

Problem
Red and green LEDs do not illuminate to indicate the battery
is correctly charging
Battery pack has low capacity
Drill cannot be switched on (Trigger Switch (7) does not
move)
Drill does not start when Trigger Switch is depressed
Screws do not reach deep enough into the workpiece
Screws are driven too deep into the workpiece surface
Possible cause
Battery not correctly connected to charger
Charger not powered
Battery not being fully charged
Battery pack has been charged over 100 times and capacity
has started to reduce
The Forward/Reverse Switch may be in the middle ('locked')
position
Battery completely discharged
Defective battery
Tool defective
Not enough torque; torque clutch setting too low
Low battery voltage
Too much torque; torque clutch setting too high
9
Solution
Clean battery socket of charger and battery contacts and
fully slide on to charger so it clicks in a locked position
Recheck mains connection
Do not remove battery until a full charge is indicated
This is normal for battery packs. Contact your GMC dealer to
purchase a replacement battery pack
Slide the Forward/Reverse Switch either to the left or right
Recharge battery or replace with a fully charged battery
Replace battery
Contact your GMC dealer or authorised service centre
Choose a higher torque setting
Recharge battery or replace with a fully charged battery
Choose a lower torque setting
GB