If the foreign matter is clogged, this fault requires regular cleaning of the ball gasket and steel ball.
When the control board is out of control leading to high pressure, you need to check whether the relay and related wiring components are damaged, and check whether the thermistor resistance is within the normal range.
If it is the float valve leakage, replace the float sealing ring, such as pot cover leakage can replace the sealing rubber ring, pot gallons and pot cover and other parts. If the float rises by the pusher connecting plate, use a small screwdriver to push the pusher connecting plate away.