Trane LO - Manual (Page 50)

Tracer
®
ZN.010
and ZN.510
50 UNT-IOM-6
Notes:
Priority Level: Diagnostics are listed in order from highest to lowest priority. The controller senses and
records each diagnostic independently of other diagnostics. It is possible to have multiple diagnostics
present simultaneously. The diagnostics affect unit operation according to priority level.
Latching: A latching diagnostic requires a manual reset of the controller; while a non-latching diagnostic
automatically resets when the input is present and valid.
Enabled: End device is allowed to run if there is a call for it to run.
Disabled: End device is not allowed to run even if there is a call for it to run.
No Action: The diagnostic has no affect on the end device.
Table 14. Controller Diagnostics
Diagnostic
Latching Fan Valves Elect. Heat Damper
Yes/No
Auxiliary No Enabled No action No action No action
temp. failure
Condensate
Yes Off Closed Off Closed
overflow
detection
Entering
No Enabled Enabled Enabled Enabled
water temp.
failure
Fan mode
No Enabled Enabled Enabled Enabled
failure
Invalid unit
Yes Disabled Disabled Disabled Disabled
configuration
failure
Low temp.
Yes Off Open Off Closed
detection
Maintenance
Yes Enabled No action No action No action
required
Setpoint
No Enabled No action No action No action
Zone temp. No Off Closed Off Closed
failure
Diagnostics