Abstract: A method for monitoring operational conditions of an HVAC unit and providing preventive maintenance alerts and/or troubleshooting instructions using an ordered set of causes for sensed parameters by monitoring parameters of the HVAC unit with sensors, collecting real time information and transmitting the data and analyzing the data with a processor and comparing it to a list of pre-determined data set points to determine variances from the set points and identification of one or more maintenance alerts and/or trouble events associated with variances, matching them to at least one of the events, displaying instructions to a user for resolving the event in a descending order determined by the processor of the most likely causes along with an associated solution for each cause, and providing a pre-failure solution from the stored set of instructions based on analysis of the stored data and timed sensor values.

Abstract: A method for monitoring operational conditions of an HVAC unit and providing preventive maintenance alerts and/or troubleshooting instructions using an ordered set of causes for sensed parameters by monitoring parameters of the HVAC unit with sensors, collecting real time information and transmitting the data and analyzing the data with a processor and comparing it to a list of pre-determined data set points to determine variances from the set points and identification of one or more maintenance alerts and/or trouble events associated with variances, matching them to at least one of the events, displaying instructions to a user for resolving the event in a descending order determined by the processor of the most likely causes along with an associated solution for each cause, and providing a pre-failure solution from the stored set of instructions based on analysis of the stored data and timed sensor values.

Abstract: A system for monitoring operational conditions of one or more HVAC units, or other machines, with a plurality of sensors for collecting operational information data and transmitting data to a storage device and a processor for analyzing and trending the data and comparing it to a list of pre-determined set points to determine variances from the data set points and identification of one or more pre-determined events and a set of preventive maintenance alerts and/or troubleshooting instructions pertaining to the events and matching of the preventive maintenance alert and/or troubleshooting instructions to at least one of the events for display of the instructions to a user for resolving the event. The system may utilize a programmable logic array with a portable sensing unit, be capable of monitoring multiple parameters, including temperature, pressure, air flow, voltage, current, and humidity and interconnect to remote stations and SCADA systems.

Abstract: A system for monitoring operational conditions of one or more HVAC units, or other machines, with a plurality of sensors for collecting operational information data and transmitting data to a storage device and a processor for analyzing and trending the data and comparing it to a list of pre-determined set points to determine variances from the data set points and identification of one or more pre-determined events and a set of preventive maintenance alerts and/or troubleshooting instructions pertaining to the events and matching of the preventive maintenance alert and/or troubleshooting instructions to at least one of the events for display of the instructions to a user for resolving the event. The system may utilize a programmable logic array with a portable sensing unit, be capable of monitoring multiple parameters, including temperature, pressure, air flow, voltage, current, and humidity and interconnect to remote stations and SCADA systems.