Bosch Professional 18V System Akku Gebläse GBL 18V-120 — Error codes & fixes
Troubleshooting guide for the Bosch Professional 18V System Akku Gebläse GBL 18V-120. Diagnose an error code and find the fix.
LED light not working
led-not-workingThe tool's LED work light does not turn on, often due to a wiring issue or a faulty LED.
Source: Bosch support — power tool troubleshooting
Confidence: 75%
Verified Aug 9, 2026
Battery not charging
battery-not-chargingThe power tool battery does not charge, often due to a faulty charger or a worn battery.
Source: Bosch support — power tool troubleshooting
Confidence: 85%
Verified Aug 9, 2026
Compressor not building pressure
compressor-not-buildingThe air compressor does not build pressure, often due to a leak or a faulty valve.
Source: Bosch support — power tool troubleshooting
Confidence: 80%
Verified Aug 9, 2026
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