Relaxed Joe

I ordered a new control thermistor for my 120v Sumatran Tiger River Hot Tub, because I had no continuity when I connected the ohm meter. The new thermistor is the same, no continuity. Shouldn't I have continuity when I place the probes into the positive and negative plug?

Thanks for the reply. No, the new heater does not have a reset.

I hope someone can give me some advice on this cuz I'm running out of options. Previously my GFI was tripping when the heater was hooked up so naturally I thought the heater was bad. I bought a new Watkins No-Fault to replace my old one. I still experienced GFI tripping. I pulled my heater control panel and I didn't see any shorts. So I assumed it was my control and hi-temp thermistors, replaced them and now my GFI is not tripping but the "Ready" indicator light is blinking indicating the hi-temp sensor is malfunctioning. Do you think it is my main control board?

It is 115v plug in.

It is 115v plug.

I have a 2002 Tiger River Sumatran spa. The GFI started tripping ever so often then tripping all the time. The power stayed on when I disconnected the lead to the heater, knowing my spa was so old I bought a Laing Infinity heater. To my surprise the breaker is still tripping. I'm getting 115 v at the heater's terminal and about 15 ohms. What could be the problem?