A thermostat versus an AC problem

Hi,

"outside sensor error" is indicative of a Diagnostic error display, a feature where the device checks the functionality of each attached component. It would seem that your system has the optional "Outdoor Temperature Sensor" (probably P/N TSTATXXSEN01-B). The error then indicates that either that sensor is faulty or the hook up cable is unplug or defective. If you do not observed any critical changes in the comfort inside your home or the area that your system monitors/controls, then this only confirms that it is external and a sensor problem and does not affect the A/C and/or the variable speed furnace/comfort zone system. Normal faults could be the external sensor to cable connector/terminals being exposed to the elements and would require hard cleaning.

This sensor is not critical to the operation of the system and is optional.

Hope this be of additional help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

The sensor most likely would need to be replaced. I don't have the service manual.

So this is a Ruud - UBHC AC

Hello,

check the some loss connection maybe need to resoldered and then also check system some parts it it busted..

for beeter result, consult the vendor or the service center in your area.

melanvz