4 Spec. Ftr. cont.
Lock
Allows you to lock the Program (to prevent any changes in custom settings)
To enable or disable the program lock, press the following buttons one at a time,
in this sequence.
<tim then FILTER, then SET CLOCK, and last HOME.
The LOCK icon (a key) appears when the system is locked. Repeat to unklock
Low Battery
When the batteries are low, the battery icon will come on and flash.
The two AA Batteries in the unit need to be replaced. In some installations your
heater system will stop functioning when the thermosat loses power. Replace
batteries as soon as you see this warning. The thermostat programs will
remain for 30 seconds while the batteries are removed and replaced.
Do not take longer than 30 sec to change the batteries in your unit
or you will lose all custom settings and all programming. Only the
Energy-Star
TM
program will remain. Once the batteries are replaced, the
system will return to normal in 2 seconds.
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4 Spec. Featr. cont.
TEMP HOLD
To change and hold the temperature until you return.
Open the door and push the TEMP HOLD button. The HOLD icon comes on.
Push the UP or DOWN arrow buttons to set the hold temperature.
HOLD is canceled if the MODE switch is moved, or press TEMP HOLD again.
Filter
The life of a heater filter varies depending on many factors, furnace run
time, and this will vary from the filter life noted on the filter media.
The 8022C has a feature that keeps track of actual furnace run time and
reminds you to periodically replace your system's air filter.
Press the FILTER button once to review the current filter record.
The FILTER and HR icons come on with accumulated filter hours being displayed.
Press to clear the record. Press again to recover the previous record.
To see the filter limit setting, press and hold the FILTER button for two seconds.
To change the filter limit hours setting, press F. or or B. Press and
hold for faster setting. The filter limit can be set within 000-500 hours.
To leave the filter display, press HOME or wait 60 seconds.
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