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Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.
Does it light at all on propane or work on electric ( if this has the electric feature)?
Let me know so we can continue,thanks Pete.
O.k.,it doesnt like a fuel or fuel valve issue here since it does light briefly but what can cause this is a faulty temp sensor.If the hot water heater temp sensor is sending a false temp signal that it is hot already it will turn off the heater from running.This will then light and go out like you see here.
This will have to be tested further to make sure that this is the cause here and will require the correct diagrams to check this as well as electrical test equipment.I suspect this sensor will need replaced as I have had to do on other models.It is possible the ignite switch is the cause needing replaced but usually it is the temp sensor.
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