First time to open pool. All working except Hayward H400 heater. Gas on, lines connected, but we continue to get SF or 5F error code and SH or 5H error code. Did the company which closed the pool turn off a valve or unplug something we don't know about? Worked fine last year. Codes indicate temp sensor issue. We cannot get the spa/pool heater to light and 
remain on. Water is 78 degrees. Would love some warm water! We appreciate any guidance offered and if you are in OKC and have the technical experience to work on it, would love to have your contact info! Thanks. D
remain on. Water is 78 degrees. Would love some warm water! We appreciate any guidance offered and if you are in OKC and have the technical experience to work on it, would love to have your contact info! Thanks. D