lpg flowmeter Troubleshooting

1 display the prompt "E1" or "E2", "E3" or "E4"
China lpg flowmeter always used in China fuel dispenser.But there is generally a mistake, should be carefully controlled manual operation; "E2" is a sensor failure prompted to check the sensor, connect the line is wrong; "E3" is not the lock switch is off, still in the unit or set the state density, Turning off the key you can; "E4" and the density of the error, correct the input density solution.
2 Press the "filling" key motor does not start
The reason is the line off the motor control panel, power supply voltage falls below 220V, the power supply board no power supply, computer power supply fuse box damage. Check the control board motor control circuit, 220V power supply is normal to see proof, so that the normal power supply and replace the fuse board.
3 measurement accuracy tolerance
Occur due to leaks within the meter is too large, rotating shaft wear, temperature transmitter damage. Adjust the gap to reduce leakage flow meter, replace the bearings so that the gears meshing flexible exchange qualified by the test temperature transmitter. No matter what kind of meter repair parts, repair to be re-measured after the test until the test to be used.
4 price and other parameters can not be set
Switch off or damaged by the join line, control panel failure. Check the link line or switch lock repair, replacement switch lock, repair or replace the control panel to work properly.
5 power state can not re-display, pre-filling non-stop
Battery failure or malfunction of the control panel, panels operator error, power supply interference filter is too large or there is damage to the cause of the failure. Replacement rechargeable batteries and maintenance control panel, confirm the China fuel dispenser, replace the power supply board can be resolved.
6 When the keyboard is damaged