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thermostat panel, not on the display). If your heating/cooling system has the required controls for
automatically determining when to change the air filter, this feature is beneficial. Consult your
contractor for further information.
No. 8 – Free LED 2 with LCD Wrench Symbol. When moved to the ON position, this switch turns on a
Wrench icon on the display screen when a 24-volt signal is sent to LED 2 (top right edge of the
thermostat panel, not on the display). This feature is beneficial if your heating/cooling system has
the required controls for automatically signaling when a particular problem exists. Consult your
contractor for further information.
110-793B 7/11/01 3:29 PM Page 25