Why does the device stay on my pool drain for a long time?
Updated on 2026/03/12
ULTRAMARINE P1 can pass over standard drain covers with a diameter smaller than 5.5 cm. Do NOT open the pool drain while cleaning to prevent the device from being stuck by suction.
If the device is stuck due to drain suction, the indicator will show a solid red light, and it will automatically adjust its thrust to escape within 3 minutes.
If it fails to escape and the indicator remains red, manually move the device away from the drain:
1.If it resumes working after being moved away, the issue is resolved.
2.If it still does not work, take the device out of the water, restart it, make sure the drain is closed, then start a new cleaning task.
If the device is stuck due to drain suction, the indicator will show a solid red light, and it will automatically adjust its thrust to escape within 3 minutes.
If it fails to escape and the indicator remains red, manually move the device away from the drain:
1.If it resumes working after being moved away, the issue is resolved.
2.If it still does not work, take the device out of the water, restart it, make sure the drain is closed, then start a new cleaning task.