In Case Of Difficulty - Carrier 53DFS250-HW Mode D'emploi

In case of difficulty

The wrong setting is
being changed.
Screen shows "Heat
On" or "Cool On" but
there is no heating or
cooling.
Thermostat does not
respond when a key
is pressed.
Fan does not turn on
when the thermostat
indicates "On."
• Whatever is flashing on the screen is the item that
the up and down buttons affect.
• Call your local heating and/or cooling contractor
to check your system.
• Thermostat is locked. See Locked Keypad
sections.
• If the mode is Unoccupied, the fan control is the
same as with the "Auto" setting. This is true even
when the display indicates "On".
21
53DFS250-HW Thermostat
69-2566EFS—05