My kids have decided to invite friends over to enjoy our spa. We have run the heater once this season I think. The heater won't start. It Sparks for about a minute, then it says No Pilot Sensed, and No Demand. I checked that the gas line is on. The pool is in spa mode. We have a Raypak 405K. It has probably only been used 8-10 times since we put the pool in 4 years ago.
Does anyone have a suggestion?
Does anyone have a suggestion?