F1 code on display, vacuum runs but suction is noticeably reduced even on Max.

Safety: Turn off and remove the battery.

• Remove dustbin and cyclone: Detach the bin and pull out the cyclone module as per Dreame instructions.
• Clear cyclone holes: Use a soft brush or wooden skewer to gently clear each small cyclone hole. Do not use metal tools that can deform plastic.
• Clean seals: Wipe the rubber seals around the cyclone and bin with a dry cloth. Ensure no dust is preventing a tight seal.
• Check bin latch: Confirm the bin clicks firmly into place when reinstalled.

After reassembly, test suction. If F1 remains and suction is still low, the cyclone assembly may be cracked or warped and should be replaced.