No loop signal
Where to look: Charging station LED + boundary/guide wire connectors.
Automower reports No loop signal — the station or mower cannot complete/detect the boundary loop signal.
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Quick answers
What is wrong?
Automower reports No loop signal — the station or mower cannot complete/detect the boundary loop signal.
What you might notice
- No loop signal in app/display
- Charging station LED flashing blue or yellow
Can I fix this myself?
Usually yes for cleaning/checking. Difficulty: medium · about 30-90 min. If unsafe or unresolved, use mail-in repair / authorised service.
What you need
- Wire strippers
- Original waterproof coupler
Do this
- Check station LED: flashing blue = incomplete boundary loop (break/poor connection); solid green = station OK but mower cannot hear signal; flashing yellow = guide-wire issue (models that use a guide wire).
- Reseat boundary (and guide) wire ends fully in the station; clean contacts. Confirm transformer is powered; reset breaker by unplugging transformer 10 seconds then reconnecting.
- If blue flash persists, locate and repair the wire break with an original waterproof coupler (Husqvarna method: bisect loop / use temporary test wire).
- Keep work area within signal range (~35 m typical; Aspire R4 ~15 m). Move wire away from metal fences/rebar interference.
- If unresolved, contact a Husqvarna dealer / request repair.
Parts (only if cleaning fails)
- Boundary/guide wire
- Waterproof coupler
Official references
- https://www.husqvarna.com/uk/support/husqvarna-self-service/no-loop-signal-on-automower-causes-and-solutions-ka-01417/
- https://us-support.husqvarna.com/en/automower/KA-01339
- https://www.husqvarna.com/us/discover/automower-faq/