i have (2) 211 hydros install in 2 different location that keep faulting out on los. both are installed under the 2010 code and have the wiring change done. one we have shut off the LOS parameter, the other we are trying to troubleshoot. i can have this thing run for weeks with no issue the it will fail 2 times in the same week then it will go away. i have added a secoundary external thermal overload, no help! i have put test meter in line to watch voltage and have seen the voltage drop all the way from 120 vac to 10 vac but the fault has not happened( odd ). the one that is running does not have a REM unit hooked up and does not have the oil sensors in the tank, i have extended run times to double.
was wondering if anyone has had this happen on the new stuff under 2010 code? don't know if it is the wiring changes they have done or ?????