Makita DUR190/DUR191 Trimmers

4 fault codes documented

All battery indicator lamps blinking — Battery may have malfunctioned

When you press the check button on the battery cartridge, if all indicator lamps are blinking, it suggests a potential malfunction with the battery itself.

Caution lamp blinking red

Caution lamp blinking red, Speed and ADT indicators off — Battery overdischarge protection (low capacity)

The tool stops automatically when the battery capacity becomes low. The speed indicator and ADT indicator go off, and the caution lamp starts blinking in red.

Caution lamp solid red

Caution lamp solid red, Speed and ADT indicators off — Overheat protection activated

The tool automatically stops and the caution lamp lights up solid red when the tool or battery cartridge becomes overheated. The speed indicator and ADT indicator will go off.

Red indicator visible

Red indicator visible when battery installed — Battery not fully locked

If you can see the red indicator on the upper side of the battery button, the battery cartridge is not completely locked into the tool.