CNT-SVX04A-EN
Troubleshooting
92
Diagnostics
Table 60
Tracer ZN.520 zone controller diagnostics
Diagnostic
Fan
Other Outputs
1
Condensate Overflow
2
Off
Valves
Closed
Outdoor air damper
Closed
Face bypass damper
Bypass
DX/electric heat
Off
Baseboard heat
Off
Low Coil Temperature Detect
2
Off
Valves
Open
Outdoor air damper
Closed
Face bypass damper
Bypass
DX/electric heat
Off
Baseboard heat
Off
Low AirFlow—Fan Failure
2
Off
Valves
Closed
Outdoor air damper
Closed
Face bypass damper
Bypass
DX/electric heat
Off
Baseboard heat
Off
Space Temperature Failure
2,4
Off
Valves
Closed
Outdoor air damper
Closed
Face bypass damper
Bypass
DX/electric heat
Off
Baseboard heat
Off
Entering Water Temp Failure
4
Enabled
Valves
Enabled
3
Outdoor air damper
Enabled
3
Face bypass damper
Enabled
3
DX/electric heat
Enabled
3
Baseboard heat
Off
Discharge Air Temp Limit
2
Off
Valves
Open
Outdoor air damper
Closed
Face bypass damper
Bypass
DX/electric heat
Off
Baseboard heat
Off
Discharge Air Temp Failure
2,4
Off
Valves
Closed
Outdoor air damper
Closed
Face bypass damper
Bypass
DX/electric heat
Off
Baseboard heat
Off
Outdoor Air Temp Failure
4
Enabled
Valves
Enabled
Outdoor air damper
Minimum position
5
Face bypass damper
Enabled
DX/electric heat
Enabled
Baseboard heat
Enabled
Humidity Input Failure
4
Enabled
Valves
Enabled
Outdoor air damper
Enabled
Face bypass damper
Enabled
DX/electric heat
Enabled
Baseboard heat
Enabled
CO
2
Sensor Failure
4
Enabled
Valves
Enabled
Outdoor air damper
Enabled
Face bypass damper
Enabled
DX/electric heat
Enabled
Baseboard heat
Enabled
Diagnostic
Fan
Other Outputs
1