Trane TCONT802AS32DA Installation Instructions Manual page 19

TCONT802AS32DA TOUCH SCREEN AND TCONT803AS32DA TOUCH SCREEN WITH DEHUMIDIFICATION
TROUBLESHOOTING (SEE TABLE 6)
Symptom
Display does not come on.
Temperature settings do not
change.
Heating or cooling does not come
on.
Comfort control is calling for Heat
(Heat on) or Cool (Cool on) but no
heating or cooling is running.
Comfort control does not respond
when touch areas are pressed.
Table 6. Troubleshooting.
Possible Cause
Comfort control is not being
powered.
The upper or lower temperature
limits were reached.
The keypad is fully locked.
Comfort control minimum off-
time is activated.
System selection is not set to
Heat or Cool.
System type Selection is
incorrect.
Heating or cooling equipment is
not operating.
The keypad is locked.
19
Action
Check for 24 Vac between B and Rc.
Check temperature setpoints.
Check Installer Setup Numbers 0600 and
0610; modify as needed.
Check Installer Setup Number 0670 to
change keypad locked options.
Wait up to five minutes for the system to
respond.
Set system Selection to correct position.
Check Installer Setup Number 0170 and
make sure correct System type is
chosen.
Check wiring.
Check Installer Setup Number 0170 and
make sure correct system type is chosen.
Verify operation of equipment in System
Test mode.
Check Installer Setup Number 0670 to
change keypad locked options.
Pub. No. 18-HD25D19-3
69-1790—3