How do I fix Husqvarna Automower error 26?

Restart the mower and let it complete any pending firmware update. If a part was recently replaced, confirm it's the correct one for your model. Persistent configuration errors need a dealer to re-pair the modules.

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Husqvarna Automower error 26

Q: What does Husqvarna Automower error 26 mean?

Invalid sub-device combination. The mower has detected a combination of internal modules or accessories it doesn't recognise as valid — often after a part swap or firmware change.

Invalid sub-device combination

Fault / warning

Also shown as E26 · fault code 26 · message 26

The mower has detected a combination of internal modules or accessories it doesn't recognise as valid — often after a part swap or firmware change.

Common causes

A replacement board or accessory that doesn't match the mower's configuration.
An interrupted firmware update leaving mismatched software.

How to fix it

Restart the mower and let it complete any pending firmware update.
If a part was recently replaced, confirm it's the correct one for your model.
Persistent configuration errors need a dealer to re-pair the modules.

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MowerWatch is an independent product, not affiliated with, endorsed by, or sponsored by Husqvarna AB. Automower® is a registered trademark of Husqvarna AB, used only to describe compatibility. Codes and guidance are provided in good faith — always follow your model's operator manual and consult a dealer for repairs. · All error codes · Guides