![UPM HTM621 Manual Download Page 20](http://html1.mh-extra.com/html/upm/htm621/htm621_manual_1060860020.webp)
If you have difficulty programming your thermostat, you may wish to restore the factory settings
and begin again.
RESTORE PROGRAMS AND OPTIONS
Press SET for 3 seconds to enter the Options mode.
Press PROG for 3 seconds to restore all programs to factory defaults.
Note: This will restore the default programs and the option settings, but will not affect the clock.
To reset the clock, press RESET (see page 8 for more details).
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Summary of Contents for HTM621
Page 4: ...Installation instructions 2...
Page 11: ...9 Programming...