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Honeywell RTHL3550D1006 Operating Manual page 12

Non-programmable thermostat
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Operating Manual
Auto Changeover
About your new thermostat
If the cool temperature is lowered to where it gets close to the heat setting, an arrow
next to heat will show the thermostat is lowering the heat setting down to maintain a
3-degree separation.
Inside
Fan
Auto
CAUTION: To avoid possible compressor damage, do not use Auto
Changeover if the outside temperature drops below 50ºF (10ºC).
69-2583ES—01
Cool
Setting
Heat
Select
Heat/Cool
MCR32595
The triangle indicates the cool temperature is
increasing to maintain 3 degrees between heat
and cool settings.
Press Select Heat/Cool to set the heat or cool
temperature.
10

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