Gas water heater solenoid valve how bad the good times

1, Gas Water Heater Valve  damage, can cause can not supply, generally just can not start her.
2, in the case of determining the normal ignition, the solenoid valve split out (off the gas source), then Bankai micro-switches, it will spark ignition, this time at the hand pads tap solenoid valve, solenoid valve It will pull, because there is no combustion, probably about 10 seconds the solenoid valve core will pop up, if they can so it should be good for him.
3, if you can not pull, it may be old or ignition battery has a problem.
4, solenoid valve failure can be divided into the body, and an electromagnetic coil, spool gas valve failure is closed lax, open action is not in place or not, it can be opened manually to repair, and then there is the coil, and You can observe whether the appearance of burn state, whether smell paste flavor, touch is hot, with a table measuring coil values, the same as the original to see if the same comparison.
5, the easiest method is to determine, whether there is pull solenoid valve sound 'is "popping" sound, if no sound is bad.