Leaderboard

If both the main breaker and the gfci is tripping randomly, there is definitely an intermittent short or loose connection somewhere as the previous posters recommended to check. The breakers are safety devices to prevent an over-current situation that could cause an electrical fire, and in the case of the GFCI, prevent electrocution. I believe it is potentially dangerous to use the tub while it is in this state. Not sure about the high limit error, could be related or a completely different issue. I would first resolve the breaker trips and troubleshoot the limit error after that.

Instead of a chemical cleaning, I started using my 3D printing & design experience to try improve how I physically clean the filters. Took me a year of prototypes trying different things but I've finally designed something awesome and universal to turbocharge my filter cleaning. Two years of testing and I'm really happy with my design. I can't wait to share it with the community after I finish all the paperwork and such.

I cannot recommend any - because since getting my spa in 1988 I haven't used one. I just hose off the filter, and change it out once or twice a decade. I think there are cleaning devices available to purchase, but I've never used any or even any brushes. Remember - ANY detergent will causing foaming issues until the end of time....