HVAC Service Mode for High-Rate Remote Diagnostic Collection
Solution Overview
Problem
Current HVAC systems face challenges in identifying the root cause of issues due to insufficient diagnostic data, leading to costly on-site technician visits for diagnosis.
Innovation Solution
A networked HVAC system with a remote service mode that allows for increased diagnostic data collection rates, override of system lockouts, and remote operation of HVAC components, enabled by a communicative thermostat with a user interface accessible via mobile applications or web portals, facilitating advanced diagnostic capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If diagnostic data collection rate is increased to enable comprehensive root cause analysis, then diagnostic capability is improved, but system resource consumption and complexity increase
Solution Approach 1:
The system dynamically adjusts the diagnostic data collection rate based on operational conditions. During normal operation, data is collected at a standard rate, but when service mode is activated or anomalies detected, the collection rate automatically increases to capture comprehensive diagnostic information, thus improving diagnostic capability without permanently increasing system complexity
Solution Approach 2:
The patent changes the data collection rate parameter from a fixed value to a variable that can be adjusted between different modes. By implementing a service mode that overrides normal operation parameters, the system can collect diagnostic data at higher rates when needed, resolving the contradiction between measurement precision and device complexity
2Productivity
If service mode is implemented with increased diagnostic data collection, then maintenance efficiency is improved, but ease of operation deteriorates due to mode switching requirements
Solution Approach 1:
The system provides self-service diagnostic capabilities by automatically collecting and storing comprehensive diagnostic data during normal operation. When service mode is activated, the system is already prepared with relevant data, eliminating the need for manual data collection procedures and reducing the operational burden on users
Solution Approach 2:
The system performs preliminary diagnostic data collection during normal operation, preparing diagnostic information in advance before service mode is activated. This preliminary action ensures that when service mode begins, comprehensive data is already available, improving maintenance efficiency without requiring complex real-time data collection during service operations
Data Source
AI summary
A networked heating, ventilation and air-conditioning (HVAC) system is provided. The networked HVAC system includes HVAC equipment deployed in a building and an element of HVAC equipment, which is communicatively coupled with the HVAC equipment to collect types of diagnostic information relating to the HVAC equipment. The element of HVAC equipment is normally operable in a normal mode and is selectively operable in a service mode. The normal mode is characterized in that diagnostic information is collected by the element of HVAC equipment at a first rate. The service mode is characterized in that diagnostic information is collected by the element of HVAC equipment at a second rate, which is greater than the first rate.