Chapter 10 Status indicators for operation and communication
78 CNT-SVX12C-EN
Diagnostics
In response to a diagnostic, the controller attempts to protect the equip-
ment it is controlling by disabling all the outputs. When the diagnostic
clears, the controller resumes normal operation.
Diagnostic types
The Tracer ZN517 has two types of diagnostics: informational and auto-
matic (also referred to as nonlatching). Informational diagnostics provide
information about the status of the controller. They do not affect machine
operation. They can be cleared from the controller in one of the following
ways:
• By using the Rover service tool (see “Resetting a diagnostic” in
EMTX-SVX01B-EN, Rover 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 74)
• 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.
Automatic (nonlatching) diagnostics clear automatically when the prob-
lem that generated the diagnostics is solved.
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