It's funny, I couldn't see you post, I could only see that you quoted me but nothing else... Now I can see it. It's weird. Anyways your experience is very interesting for me! I my case, we installed a ½W resistor and placed it on lt1 sensor. It raises by 2-3F and it is enough to avoid LT1 lockout. I also plan to install a flow switch on water line. The compressor signal will go through it and when there is no flow, the compressor won't get energized. I don't know why they didn't try to monitor the flow, they have sensor to do it! That's about it, I would have liked to speak with a ClimateMaster engineer but I don't think they are interested... Thanks for your input hardchines, it help and it's reassuring! Cheers! Laurence.