25
Status
Light Color
Status Condition User Action
GREEN NORMAL
Nailer is energized
and operating
conditions are normal
Nailer is ready for use
RED
Jam condition
detected
The driver blade
cannot return to
correct position
1) Follow the “Jam clearing” sequence to remove the
obstruction in the Nosepiece or Magazine.
2) In the RESET mode, if other abnormal conditions
are encountered, the status indicator will display the
appropriate status light color.
YELLOW
Motor and Electronics
Overheat protection
Motor or electronics
temperature is above
50°F (122°C).
Allow the nailer to cool. When the motor and
electronics cool sufficiently, the nailer will self reset
and resume normal operation.
DARK BLUE
Nailer Low Tempera-
ture Protection
Nailer temperature is
lower than 23°F (-5°C).
Place nailer in warm space. When the motor and
electronics warm sufficiently, the nailer will self reset
and resume normal operation.
ORANGE
Motor Blocked -
Motor cannot return
driver blade to
correct position
Drive mechanism
is obstructed,
preventing normal
reset operation.
1) Follow the “Jam clearing” sequence to remove the
obstruction in the Nosepiece or Magazine.
2) In the RESET mode, if other abnormal conditions are
encountered, the status indicator will display the ap-
propriate status light color.
LIGHT BLUE
Motor Overcurrent
Protection
Motor is drawing
excessive current
- Nailer will stop
operation.
1) If nailer is being fired for extended periods without
sufficient cooling, allow the nailer to cool.
2) Examine nailer for obstruction or excessive
contamination.
3) Error will clear if battery is removed or nailer is
turned OFF.
4) If error persists, nailer needs to be returned for
repair at a Bosch service center.
WHITE
Electronics Fault -
Nailer in SAFE mode
Electronics fault
detected preventing
operation.
This condition is Non-resettable and non-repairable by
user. Nailer needs to be returned for repair at a Bosch
service center.
MAGENTA
Service
Recommended
Service-indicator
illuminates MAGENTA
for 3 seconds, then
shows normal green.
Return to Bosch service center for service.
Troubleshooting
1605A001CD GNB18V-12 202301.indd 25 1/9/23 2:07 PM
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