Dehumidifier shows P1 and stops, water tank may be full

Safety: Turn the unit off and unplug before removing the water tank.

Steps:

• Empty the tank: Carefully slide out the water tank and empty it completely. Rinse to remove any sludge or scale.
• Check float movement: If the tank has an internal float, ensure it moves freely and is not stuck in the "full" position. Clean as needed.
• Inspect tank seating: Reinsert the tank firmly until it clicks or sits flush. Many Russell Hobbs models use a small lever or switch that the tank must press; ensure nothing is obstructing it.
• Test tank switch: With the unit unplugged and the tank removed, locate the tank full switch in the cavity. Press it by hand and listen for a click. If it feels loose or does not click, it may be faulty.
• Replace switch if needed: If P1 remains even with an empty, correctly seated tank, replace the tank full micro switch / float sensor assembly.