Trane N512 用户手册

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. 

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 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 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”.