Pause phenomenon tanker problems during refueling

When turned on, the baffle plate inside the switch did not fall into place, micro switch contact is not good; the grid voltage instability caused by this failure.
Bad wiring terminal board (screw not tightened the pressure line), gas station software in a halt during refueling tanker;
2V or 5V DC output voltage is low power board;
SCR board damage (phototriac conduction capacity decreased) also cause such a failure;
When the motherboard is faulty also make refueling pause phenomenon during diesel fuel flow meter.