Trane Tracer AH540 User Manual

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

Trane Tracer AH540 Specifications

General

Brand	Trane
Model	Tracer AH540
Category	Controller
Language	English