Hello, we have just installed a new 3ton ClimateMaster TZ22 in open loop. We are experiencing a new problem today: When the machine is started in Stage1, everything is fine. EWT around 47, LWT around 45, LT1 around 34. But as soon as stage 2 kicks in, LT1 is dropping to 26 in 1 minute and the machine crashes there with LT1. The valve is opened to 100% this is why delta T is 2F but it seems it has no effect because when the machine crashes, LWT has not dropped yet... It has been working a month so far and when Stage2 kicks in, it usually drops the LT1 of a couple of degrees but nothing drastic. Now it's going down very fast and we don't understand what the problem might be. If anyone has a clue about what we are experiencing, please le me know. Cheers, Laurence.