Hello All. I have a 1991 Enertran Geothermal running on an open loop. Everything is working very well, the house stays at an even 70 degrees regardless of how cold it gets outside. However, some silly person 30 years ago figured it would be wise to put the thermostat(white-rodgers 9105-e7) in the corner of the home, beside an entry door. Being that it can be -15c to -25c for months on end here, Its not very wise, every time the door opens the Geo kicks in. Im going to move the thermostat to a new location(living room) As part of that move, I am considering an upgrade to the thermostat. One of the configuration points on the new thermostat is the setting for the reversing valve. Question: Without having a Manual on this model groundwater heat pump, How can I test/validate what direction the reversing valve is set to? cool or heat? I would assume this matters based on the thermostat asking for this information.