There are many faults of electric pressure cooker, such as electric leakage, air leakage and poor exhaust. Once found, measures should be taken according to various situations. Let's continue to understand the fault maintenance knowledge of electric pressure cooker:

Fault 1: leakage

Cause of failure: the insulation material at the connecting wire, socket or thermostat is damaged and collides with the shell, the electrical appliance part is damp, and the sealing insulation material of the heating element of the electric heating plate is aging.

Maintenance method: replace the insulation material, remove the metal parts from the shell and conduct insulation treatment; Open the bottom cover and dry it; Remove the aging insulating material and seal it with silica gel for 24 hours before use.

Fault 2: Air leakage

Causes of failure: the valve seat of pressure limiting valve is loose, the sealing washer of safety valve and safety plug is damaged, the pressure spring of safety valve loses elasticity, there is a gap between valve needle and valve body, the fuse piece of safety plug is damaged, and the sealing ring of pot cover is expired.

Maintenance method: the valve seat and disc are re-fixed; Replace the gasket of pressure limiting valve, safety valve and safety plug; Replace the spring and adjust the gap; Replace the fusible sheet with a new fusible sheet; Replace the pot cover sealing ring.

Fault 3: Poor exhaust.

Cause of failure: the inlet and outlet holes of the pressure limiting valve are blocked; There is rust mud on the weight of pressure limiting valve, and the air hole is affected.

Maintenance method: remove the blockage; Besides rust and pollutants, add a little cooking oil to make it rotate flexibly.

Trouble 4: uncooked rice.

Cause of failure: there is a foreign body between the pot liner and the electric heating plate; The inner container of the pot is deformed and the bottom of the pot is electrified; The inner container of the pot is inclined and one side is suspended.

Maintenance method: remove foreign objects, find out the deformation, carefully tap the bottom of the pot with a wooden hammer for shaping, and turn the inner container to make it closely contact with the electric heating plate after normal, and check whether the voltage is normal.

Fault 5: Failure of pressure maintaining function

Cause of failure: the pressure maintaining power supply is disconnected or the connecting screw is loose; The timer is in the off position; The rectifier diode is burnt out; The contact of sensitive limit switch is deformed, loses elasticity and has poor contact.

Maintenance method: check the broken line or loose point and weld again; Adjust the timer knob to the scale of required time; Replace the rectifier diode with the same specification; Correct with needle-nosed pliers. If it cannot be recovered, replace the timer limit switch.