Hello I am a Service Manager and I am looking for a universal thermostat (Ranco or other) that will actually work in today's R134A reach in cases and sandwich coolers ...My technicians have brought back several different brands and types of stats always with a "it didn't work" or "it shut off too soon or too late"... I want to tell them to put a temporary stat in place of the broken one and that we have to return to replace the O.E.M. part. BUT it would be nice if we could actually find a universal part that works or is my technicians not giving enough time for the control to acclimate to the box temp?? My techs say the control will sit in there for a good two hours..
Any advice on a proper brand or a correct procedure would most appreciated