I have a Starite heater (Natural Gas)MAX Therm and its been giving me fits for last few weeks. First off, it is definitely NOT a flow issue,it comes on intermittently, some days it works, some days it does not. When it doesn't,the SERVICE HEATER light stays on. When it works the SERVICE SYSTEM comes on briefly then switches to HEATING light, then works like a charm.........Anyone have any suggestions ? I am personally thinking that it may require a new board . Or some "fixing" for the board.