
21
“TROUBLE” D
ISPLAY
If the thermostat displays "TROUBLE" continuously, with backlight for LCD flashing—the system has shut down due
to a protective device. The auxiliary heat, if installed, will automatically come on if necessary. If the thermostat
displays a slow flashing "TROUBLE" (about 1 flash/second) with backlight for LCD flashing—the unit is not receiving
valid thermostat signals. Your unit will operate normally during this time, if possible. Call your WaterFurnace dealer.
If the thermostat displays a fast flashing TROUBLE (about 3 flashes /second)—the unit is locked-out due to insuf-
ficient airflow. Reset the unit (see page 31). If unit still does not operate or the TROUBLE display is still on, call your
dealer.
“CLEAN FILTER” D
ISPLAY
This indicates that it is time to replace or clean the air filter in the system. After a new (or clean) filter is in place,
press the RESET FILTER button to reset the timer.
For more information, refer to the Owner’s Guide packaged with the thermostat.
TA32U02 Thermostat - Continued
THERMOSTAT OPERATION