Wednesday, February 11, 2009
I was able to confirm with the hot tub dealer that the relay control board can blow up without some other external root cause. Also, 10 Ohms is within tolerance (8-12 Ohms) for the heating element. A new board is on the way, the better style they said, so we'll see if this fixes things.
Tuesday, February 10, 2009
Well, I went to jump in the hot tub last night and I got one leg in up to my knee before I noticed the water was cold. I looked at things a bunch last night and noodled over it, then opened up the controller box tonight and found the above issue inside. The spa is a 2001 Hot Spring Vanguard, and the burnt board is the Relay Control Board. I am hoping the heater is ok. It measured 10 Ohms, which seems reasonable. I = V/R = 120/10 = 12 Amps. I am going to call the local spa service outfit and see if I can get an idea if something else might be wrong before I order the board.