Just bought a house with a pool and inground spa and can't get the spa to heat.
The heating unit gets extrememly hot (too hot to touch), but the spa water does not heat. There are two valve controls, each is labeled pool at 9 o'clock and spa at 3 o'clock. I assumed having the intake and return both set to spa with the heater switched on would heat the spa.
What am I missing (aside from common sense, apparently)? And is it normal for the heating unit to be so hot to the touch?