PETKIT PuraMax 2 (T4-2 / P9902) troubleshooting
4 problems the manual covers, with the cause and the fix it gives.
The PETKIT PuraMax 2 is a rotating drum box. The steps below are the manufacturer's own; if a step involves opening the unit, check the warranty first.
Screen shows 'Upper cover not closed!'
Why: The magnetic side cover is not closed or not installed properly.
What to do: Re-seat the magnetic side cover.[1]
Screen shows 'Device failure'
Why: A device fault.
What to do: Open the PETKIT app to see the fault details.[1]
Screen says the waste collection bin is full
Why: The waste bin is full.
What to do: Empty the bin and fit a new trash bag.[1]
Device stops and alerts mid-cycle
Why: A cat entered or approached while the device was running; it pauses automatically.
What to do: Wait for the cat to leave; the 'Continuous Rotation' app option changes this behaviour.[1]
Back to the PETKIT PuraMax 2 (T4-2 / P9902) spec sheetGeneral fixes for drum, globe and tray boxesError lights of every model
Sources
- PETKIT PURA MAX 2 user manual EN V1.3 (2026-02-02), p. 3, 4, 5, 7, 9, 10, 11, 17, 26, 27, checked Oct 8, 2026