Suburban water heater gas valve stays open no flame

isonychia wrote:
Is it possible I need a new module board?

My board died. Although I did not smell gas, I could hear the main valve open, but could not hear the electrostatic spark. I had a mobile repair tech come and replace it under warranty. It took more time to find my warranty paperwork and pay him than it did to replace the board. The new board is still working 2 years later.