I have a 99 Hotspring Grandee that has been shutting down after i turn off the pumps. The circuit breaker doesnt trip, but the light and pumps shut down, as well as the display panel- except for the blinking power light that is normally steady-on. I reset the breaker and it starts back up just fine. But then I hit the 'clean' button, which runs the jets for a few minutes, and after it's done it shuts down. I reset the breaker again, and it works fine as long as I dont run the pumps. I checked it after two days and it was still working fine- but with zero pump usage. This is a big problem right now due to extremely low temps outside- I dont want this thing to freeze on me. I had a similar problem last year, and replaced the two thermistors and it worked fine until now. How do i figure out what is causing this shutdown issue? Could the thermistors have gone bad in a year?
not sure if this is related, but I'm usually the only one using the spa and am very meticulous when getting in to make sure i'm not trackin anything in... but the floor of the spa is covered with grains. I find it hard to believe that I am the source of this material. I did notice that when i open the drain valve the water exits very slowly (yes the valve is fully open) for being under the pressure of 500 gallons. it was so slow that i dropped in a waste pump (from my pool cover) to drain it faster. Could the drain plumbing be clogged with this grainy debris somehow-and only comes out after a month of use? and how can i get it out? I've had this spa for several years, and it's been drained and cleaned every 3-4 months. Would it hurt anything to attach a garden hose to the drain valve and flush it with about 40lbs of water pressure? I dont want to do any further damage.