Stihl · Power Tools
This signals an internal electronic problem within the HSA 56 tool. The unit needs to be opened for inspection by a qualified technician.
Click steps to track your progress.
Open the HSA 56 unit for inspection as per the diagnostic steps.
Carefully examine all internal wiring and connections for damage.
Inspect the electronic control board for any signs of burning or component failure.
Replacement of the electronic control board may be necessary.