Ignition failure

Gas water heater ignition pulse ignition firing pin but not the main burner ignition failure:
Low battery 1. The gas water heater or battery connection is bad.
2. hot gas water heater switch is bad.
3. The Water Heater Gas Valves is bad or there is the phenomenon of the card.
4 .. gas water heater circuit board has contact failure or damage phenomenon.
5. insufficient water pressure or water pressure micro switch bad.
6. above the fault can not be excluded, please professional maintenance personnel to repair or service call to repair.