Trane Tracer AH540 Setup And Operation page 101

Table 63. Tracer AH540/541 diagnostics
Diagnostic
Emergency Override
(informational; nonlatching)
Manual Output Test
(informational; nonlatching)
1,2
Low Temp Detect
(critical or service required;
latching)
Duct Static Press High Limit
(critical or service required;
latching)
Duct Static Press Failure
(critical; nonlatching)
2
Unit Shutdown
(critical or service required;
latching)
Low Supply Fan Air Flow
(critical or service required;
latching)
Discharge Air Temp Failure
(critical or service required;
nonlatching)
Invalid Unit Configuration
(service required; latching)
Space Temperature Failure
(critical or service required;
nonlatching)
Low Exhaust Fan Air Flow
(service required; latching)
Outdoor Air Temp Failure
(service required; nonlatching)
Mixed Air Temp Failure
(service required; nonlatching)
CNT-SVX05B-EN
Table 63 interprets each diagnostic according to what effect it has on the
controller outputs.
Configuration
Space temperature control
Discharge air temperature con-
trol
Space temperature control
Discharge air temperature con-
trol
Space temperature control
Discharge air temperature con-
trol
2
Discharge air temperature con-
trol
2
Space temperature control
Discharge air temperature con-
trol
2,3
2
2,3 Space temperature control
Space temperature control
Discharge air temperature con-
trol
3
Space temperature control
Discharge air temperature con-
trol
Outputs
See "Emergency override" on page 71.
See "Performing a manual output test" on
page 84.
Supply fan:
Valves (cooling):
Valves (heating):
DX cooling/Electric heat: Disabled
Outdoor air damper:
Face and bypass damper: Face
Exhaust fan:
Supply fan:
Valves:
DX cooling /Electric heat: Disabled
Outdoor air damper:
Face and bypass damper: Bypass
Exhaust fan:
Supply fan:
Valves:
DX cooling /Electric heat: Normal operation
Outdoor air damper:
Face and bypass damper: Normal operation
Exhaust fan:
Supply fan:
Valves:
DX cooling /Electric heat: Normal operation
Outdoor air damper:
Face and bypass damper: Normal operation
Exhaust fan:
Diagnostics
Off
Open
Open/closed
Closed
Off
Off
Closed
Closed
Off
Normal operation
Normal operation
Normal operation
Off
Normal operation
Normal operation
5
Minimum position
Normal operation
91