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Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.
69-1787-1 G.H. 02-05
TCONT800AS11AA TOUCH SCREEN PROGRAMMABLE COMFORT CONTROL
American Standard Inc.
Troup Highway
Tyler, TX 75711-9010
Pub. No. 18-HD25D18-1
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.
The keypad is fully locked. Check Installer Setup Number 0670 to change
keypad lock 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; verify correct
system type is chosen.
Verify equipment operation in System Test mode.
Comfort control does not
respond when touchpad is
pressed.
The keypad is locked. Check Installer Setup Number 0670 to change
keypad locked options.