I've got a laars lt 400 pool heater that was working last season (am in nj and it is now spring... 4yr old son wants to go in pool but it's way too cold! Up to daddy to fix it ASAP)
De-winterized everything this spring and all seems fine except when filter running and pool heater turned on, heater fan goes on, burners get lit, heat turns on and then within 5-10 seconds i hear 'click' sound and burners turn off and blower continues to stay on... Then burners light and heater attempts to turn on again but never does and then ultimately all shuts down
Once the 'click' sound is heard the ags light starts blinking in red
However if the burners actually turn on - how can issue be with the ignitor, sensor, gas piping?
Could it be pressure switch? If I'm on the right track, how do I test pressure switch? I can't even seem to locate it - even with manual in hand ! Shux, really don't ant to have to call in pool company for this one. Any suggestions. Or guidance? Thank you SO much!