We built our pool last summer and this is our first season opening the pool. Everything has gone well however I am not sure the heater is working.
I don't have any error codes and I can hear the heater humming along nicely, however when I reach into the pool the return water is not warm (and it would be noticeable with the water temp barely above 50-degrees). I do not remember a big time lag when the return water started to warm up when we used the heater last year, but could that be it? Any other thoughts are much appreciated.