Susanj Posted April 14, 2021 Report Share Posted April 14, 2021 Someone on this forum told me -Your spa, wired at 240v on the heater, should heat 8-10 degrees per hour. Ours heats up 2-3 degrees an hour. I figured nothing could be done, that it is what it is. The salesman told us it should take 8 hours. I later thought he said that because he didn't know or he just wanted the sale. Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted April 14, 2021 Report Share Posted April 14, 2021 Post a picture of your circuit board, wiring diagram, and breakers with wires visible. Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted April 14, 2021 Report Share Posted April 14, 2021 57 minutes ago, Susanj said: 2-3 degrees an hour from 50 degrees or 80 degrees or 95 degrees? Colder water will heat slower and it should pick up a bit of speed as it gets hotter. 8-10 hours is not unusual depending on what temp you start at and how big the body of water is. Like @RDspaguyasked post pics of board and the schematic on the inside cover and we can tell you if it is wired correctly and the dip switches are in the proper position...this can make a difference in performance. Quote Link to comment Share on other sites More sharing options...
Susanj Posted April 14, 2021 Author Report Share Posted April 14, 2021 375 gallons. From 40-50 degrees to 104 degrees. Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted April 14, 2021 Report Share Posted April 14, 2021 1 hour ago, Susanj said: 2-3 degrees an hour. I That is the expected output of a heater wired for 120v. The pics will let us see how yours is wired. Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted April 14, 2021 Report Share Posted April 14, 2021 @ 40-50 degrees up to 80/85 you might only get 2-3 degrees an hour but once it gets going/heating say from 85 to 100 you might get 8-10. How long does it take to go from 100 to 104...not very long I'm guessing Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted April 14, 2021 Report Share Posted April 14, 2021 That implies that it requires more energy to raise temp 1 degree at 50 degrees than it does to raise 1 degree at 100 degrees, which is not the case. It would violate the basic laws of thermodynamics. Quote Link to comment Share on other sites More sharing options...
Susanj Posted April 14, 2021 Author Report Share Posted April 14, 2021 It’s not 120V Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted April 14, 2021 Report Share Posted April 14, 2021 If it was wired wrong it could be running at 120v even with a 240v breaker. Post pics and we'll see. 1 Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted April 14, 2021 Report Share Posted April 14, 2021 3 hours ago, RDspaguy said: basic laws of thermodynamics Stupid laws 1 Quote Link to comment Share on other sites More sharing options...
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