Display shows “Unexpected error” and mower stops without a clear cause.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Temporary software glitch, Electrical noise or interference, Intermittent sensor connection, Main PCB fault

Safety first: Turn main switch OFF.

Power reset: Leave the mower OFF for 1–2 minutes, then turn ON again.
Check connectors: Open the mower and gently press all major connectors (battery, motors, sensors) to ensure they are seated.
Update firmware (if supported): Use Husqvarna Automower Connect or dealer service tools to update to the latest firmware.
Monitor frequency: If the error is rare and clears with reset, continue to observe. If frequent, contact a Husqvarna service center for PCB diagnostics.

Medium 3/5

Main PCB

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