I have a 1993 sundance spa marin that I got about six months ago we I got it I new it needed a new heater so I got one put it in worked great then about two weeks ago the sensor burned up so I got a new one did not work so I replaced the heater element that worked for about a week now it only get to about 90 please help also the bubbles stoped working on the topside the light is lit but no bubbles thanks for your help
