No loop signal — Boundary wire broken or charging station power issue

Was bedeutet No loop signal ?

This fault message means the mower isn't detecting the signal from the boundary wire. This can be caused by a break in the wire, a power issue with the charging station, or problems with internal components.

• Break in the boundary wire.
• No voltage to the charging station or its transformer is disconnected/tripped.
• Communication breakdown between Automower and charging station.
• Boundary wire routed incorrectly around an island.
• Defective circuit card in the charging station, front loop sensor card, or mower's control box.
• Interference from metallic objects or buried cables.

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1. 1

   Check the LED on the charging station. If it's flashing once per second, repair the boundary wire using a water-tight connector.

2. 2

   Verify the transformer is connected to the mains supply and check if its miniature circuit-breaker has tripped. Reset by unplugging, waiting 10 seconds, then reconnecting.

3. 3

   Place the Automower in the charging station and re-enter the PIN code via Settings - Security - PIN code (4-1-1).

4. 4

   Check the boundary wire routing, especially around islands, to ensure it follows installation instructions.

5. 5

   Use Quick check (hold '0' for 2 seconds) to verify Af and Ar levels. If both are 0 or Quality is below 100%, the circuit card or control box may be defective and need replacement.