ENHANCED DIAGNOSTICS FOR A HEATING, VENTILATION AND AIR CONDITIONING CONTROL SYSTEM AND AN ASSOCIATED METHOD OF USE

A heating, ventilation and air conditioning diagnostic system and associated method of use is disclosed. The system includes a controller for operating a heating, ventilation and air conditioning system, a plurality of sensors for monitoring various parameters associated with the operation of the heating, ventilation and air conditioning system that are in electronic communication with the controller, at least one input device that is in electronic communication with the controller, wherein the at least one input device is able to modify variables utilized by the controller to improve performance of the heating, ventilation and air conditioning system; and at least one output device that is in electronic communication with the controller. The variables can include non-safety timing values and text-based information. The system may include counters that can be read-only, reset to zero and overwritten through the plurality of input devices. Historical data can be recorded, reviewed and selectively analyzed.