MTA Chiller Fault - Refrigeration-Engineer forums
MTA Chiller Fault. Hi Guys, Called to a MTA chiller with both systems out on High Pressure switch. Its a R407C chiller with two systems. No wiring diagram of course! There are 4-off HP switches, two per circuit, one manual and one auto. The switches are wired in series and there is 220V all the way through the switches.