User manual HONEYWELL RTH221

[. . . ] Auto: The fan runs only when heating or cooling is actually taking place (commonly used setting). Use this setting for improved air circulation or for more efficient air cleaning. [. . . ] NOTE: To skip a period, press the Hold button for four seconds while that period is displayed. When a period is skipped, dashes appear instead of the time and temperature display for the period. Once all adjustments are made, press the Run button to save them and exit. (The changes are also saved if you do not press any button for 60 seconds. You are setting the temperatures outside their allowable ranges: changed. Cooling will not be activated until the delay ends (maximum of five minutes). The word Temporary will appear on the screen and the period display will flash to indicate that the current period has been overridden. To change the setpoint temperature, press either button more than once. Press the Run button if you wish to cancel the temporary setting before the beginning of the next period. Then, press the Hold button to maintain the new temperature indefinitely. Otherwise, the heating/cooling system could remain activated even when batteries are removed. Install two fresh AAA batteries when the low-battery icon flashes on the screen. [. . . ] If you have any questions concerning this warranty, please write Honeywell Customer Relations, 1985 Douglas Dr, Golden Valley, MN 55422 or call 1-800-468-1502. If you have any questions regarding your thermostat, please go to http://yourhome. [. . . ]