Spa has been not working for about a year. Been trying to diagnose and repair as time permits, here's the timeline and what I have ruled out
spa was turned down to 85 for a few days then turned up to 103. Never reached temp.
Found the ozone generator was leaking, the check valve shattered. Replaced that, no change (obviously). Ohm checked the heater today. 12.4 ohms, 120vac coming from board. Red and green lights are on on the led board (power and heater on) board recognizes when the limit switch is disconnected. I've removed and cleaned the filters and had no change. Since I live in az when the ambient temp went up over the summer the temp of the spa went as well. It was 123 degrees one day and the high limit fault code came on (I've checked, I'm not set to summer mode)
by by my testing I have ruled out the heater, relay board and limit switch. I don't know how to test the flow switch or what else I can check. Any advice or direction is appreciated
this is is a hot springs spa with a Watkins no fault heater and an iq2000 board. The spa came with the house so I imagine it's at least 10 years old.