11
Premier2 Owner’s Manual
What if the word TROUBLE is
displayed on the thermostat?
The
TROUBLE
display is used to indicate the following
problems:
Continuously on
TROUBLE
with backlight for LCD
flashing—the system has shut down due to a protective
device (see resetting the unit section, page 15). The
auxiliary heat, if installed, will automatically come on if
necessary to keep the home or building comfortable.
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.
Fast flashing
TROUBLE
(about 3 flashes/second)—The unit is locked-out due to
insufficient airflow. Check, clean or replace filter. Reset the unit (see page 15). If unit still
does not operate or the
TROUBLE
display is still on, call your WaterFurnace dealer.
What if the words CLEAN
FILTER are displayed on the
thermostat?
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.
What do I do in case
of a power failure?
Don’t worry.
Your Premier2 thermostat employs the latest developments in solid-state
electronic technology. One of its unique features is the elimination of the battery required to
maintain your selected set points in the event of a power loss. The thermostat memory is
unaffected by power failures of any duration. When power is restored, the thermostat will
continue operating as if the power had never been interrupted. However, there will be no
heating or cooling during the outage.
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