초록 ▼

The present invention is a diagnosis and testing system for a temperature control system which includes a communication bus, a control processor, and a service thermostat. The communication bus is coupled to substantially all of the components of the system. The control processor initiates communica

The present invention is a diagnosis and testing system for a temperature control system which includes a communication bus, a control processor, and a service thermostat. The communication bus is coupled to substantially all of the components of the system. The control processor initiates communication between components by sending a bus address over the bus. The control processor includes an address decoder for recognizing various bus address signals, including a normal thermostat bus address and a service thermostat bus address. The service thermostat has a switch, a processor, and a bus interface unit. The switch selects the operating mode of the service thermostat, e.g. either normal or service modes. The bus interface unit communicates over the bus for the service thermostat processor. The service thermostat processor operates the service thermostat and is adapted to communicate over the bus using a bus address according to the operating mode which is determined by the switch.

대표청구항 ▼

A thermostat, adapted for use with a temperature control system having a communication bus and a means for storing predetermined bus addresses, said thermostat comprising: switching means for selecting a desired one of a plurality of operating modes for said thermostat, said plurality of operating m

A thermostat, adapted for use with a temperature control system having a communication bus and a means for storing predetermined bus addresses, said thermostat comprising: switching means for selecting a desired one of a plurality of operating modes for said thermostat, said plurality of operating modes including a normal mode and a service mode; processing means coupled to said switching means, said processing means selectively affects one of said operating modes, based on the position of said switching means; bus interface means coupled to said processing means and said communication bus, said bus interface means communicating signals over said communication bus; said processing means adapted to communicate bus address signals via said bus interface means, using a bus address signal determined by the current state of said switching means.