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