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Chapter 8 Status indicators for operation and communication
66
Clearing diagnostics
Diagnostics are categorized according to the type of clearing function each
has. 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 9, "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
•
EMTX-SVX01A-EN, Rover Installation, Operation, and Programming
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 58)
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 on 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.
Smart reset diagnostics
After the controller detects the first smart reset diagnostic, the unit waits
30 minutes before initiating the smart reset function. If another diagnos-
tic of this type occurs again within 24 hours after an automatic clearing,
you must manually clear the diagnostic.
Informational diagnostics
Informational diagnostics provide information about the status of the
controller. They do not affect machine operation. They can be cleared from
the controller in the same ways that manual diagnostics are cleared (see
"Manual (latching) diagnostics" on page 66).
CNT-SVX06B-EN
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