I've been googling all day and narrowing down the issue. I have a Megatrol Spa Controller in my LifeSpa DS-660. It was working fine and all of the sudden stopped. When I first bought the hot tub, I had trouble getting it to work and it turned out to be a bad breaker. I tried that first, not a bad breaker.
1. The GFCI breaker at the sub panel has been tested and working right (Including the neutral). I swapped it out with a non-GFCI temporarily because every time the hot tub trips, it trips both breakers and its even harder for me to test.
2. The GFCI breaker in the hot tub will trip until I either turn off the heater from the dial, or unplug the heating element. The pumps will run fine on high and low if the heater is disconnected.
3. I have used 2 OHM testers to test the heating element and it is getting between 12-15 OHMS. I've been getting mixed answers about this. Most sites are saying that this is a good range and would mean that the element is fine, however some sites are also saying that if it only trips when the heating element is unplugged, that means it's bad.
4. When I test the voltage coming from the wires that are going to the heating element while unhooked from the element and not tripped, they aren't showing any voltage. I do get voltage if I test the wires before the relay just before the element.
My conclusions are one of 3 but I'm hoping someone could shed some light on this. Either the heating element is bad (looks perfectly clean inside and has good OHMs), the relay is doing something wrong, or there is an issue with the pressure sensor.
Any help would be greatly appreciated!