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S
shawanthonyJul 28, 2025
What to do if the Kärcher SensoTimer ST6 Duo eco!ogic shows no display indication of irrigation times and displays O:FF?
- BBrian RayJul 28, 2025
If your Kärcher Irrigation System displays 'O:FF' instead of irrigation times, it typically means the battery is empty or the contacts are oxidized. To resolve this, insert a new 9V battery (type 6LR61 / Alkaline) or clean the contacts.
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