spent last couple of weeks in the georgia woods in my 28 jayco with a dual [electric/gas] water heater . first time using the gas side of the heater in the 2007 trailer. the unit would ignite for the cycle sometimes on first or second attempt, sometimes would ignite for a second then go out then retry. one time it made three unsuccessful attempts, had to re-cycle start switch then would run. igniter seems fine , not sure if brain could be going or flame sensor?????