Good afternoon,
When I'm in my tub, I notice that when the water drops below my pre-set temp, the heater does not turn on while the pumps are running. When they're off it kicks on.
If I'm not mistaken, I recall that there is a jumper on the electrical board that enables the heater to heat while the pumps are running. Thus the need for a 60 amp service which is what I have.
On the cooler nights here in Wisconsin the water temp drops a degree or two while I'm in it. It's crazy but, I notice that 1 or 2 degrees.
Any input is appreciated.
Skellman