I'm getting 10 flashes of the fault light. They sort of come in pairs over about 15 seconds (i.e. 5 pairs of flashes). Then, for about 30 seconds nothing happens, then the process repeats, 10 more flashes. This goes on for 5 minutes, then stops for 10 minutes or so. I checked the supply voltage: rock solid at 240. Everything else (pressure--50) works normally. I re-set the controller (circuit breaker off for 5 minutes). Neither the manual, my installer nor Franklin Tech support can offer any insight. Any ideas?