Chapter 6 Status indicators for operation and communication
Diagnostics
Diagnostics are informational messages that indicate the operational sta- tus of the controller. In response to most diagnostics, the controller attempts to protect the equipment by enabling or disabling, or opening or closing, specific outputs. Other diagnostics provide information about the status of the controller, but have no effect on outputs. Diagnostics are reported in the order in which they occur. Multiple diagnostics can be present simultaneously. Diagnostic messages are viewed using the Rover service tool or through a BAS.
Types of diagnostics
Diagnostics are categorized according to the type of clearing method each uses and the type of information each provides.
The four categories are:
•Manual (latching)
•Automatic (nonlatching)
•Smart reset
•Informational
Note:
Clearing diagnostics refers to deleting diagnostics from the software; it does not affect the problem that generated the mes- sage. For help with diagnosing a problem, see Chapter 7, “Trou- bleshooting”.
Manual (latching) diagnostics
Manual diagnostics (also referred to as latching) cause the unit to shut down. Manual diagnostics can be cleared from the controller in one of the following ways:
•By using the Rover service tool (see “Resetting a diagnostic” in
•Through a building automation system (see product literature)
•By initiating a manual output test at the controller (see “Manual out- put test” on page 52)
•By cycling power to the controller. When the 24 Vac power to the con- troller is cycled off and then on again, a
•By turning the zone sensor fan switch to OFF and then back to any other setting. (This feature will be available beginning with controller software version 2.10.)
Automatic (nonlatching) diagnostics
Automatic diagnostics clear automatically when the problem that gener- ated the diagnostic is solved.
58 |
|
