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Chapter 6 Status indicators for operation and communication
58 CNT-SVX07C-EN
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
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
EMTX-SVX01A-EN, Rover Installation/Operation/and Program-
ming guide).
• 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 power-up sequence occurs.
• 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.
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”.