Quote:
Originally Posted by Bill14564
Mine has no connection either but I am not at all surprised to learn that newer systems do. It's probably a very inexpensive modification to have a pressure sensor changed from a binary good/bad to be calibrated and report the actual pressure. Temperature sensors before and after the evaporator coil could report delta temperatures. Ammeters and capacitance meters could be added to check current draw and the health of the capacitor.
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As far as connecting "a computer" to your system, what that person was referring to is they usually have a tablet device where they login for your visit and enter all the readings they are measuring such as pressures and temperatures, super heat, sub cooling, fan motor current draw, capacitor reading, etc... They are not connecting to any electronics in you system because there are no computerized electronics in it to connect to.
The only time they can "connect" electronically to your system is if you have a Carrier Infinity system. That system has electronics in it that enables the technician connect to it via bluetooth and gather all the readings, load software if necessary, etc... This system also has electronics that monitor's itself to help the technician determine if there is a problem and how to approach fixing it. Very cool.