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Select System Setting (Heat/Cool) - Honeywell RTHL3550D1006 Operating Manual

Non-programmable thermostat
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Select the system setting
About your new thermostat
Fan
System
Auto
Fan
System
On
Note: The Auto and Em Heat set-
tings may not appear, depending on
how your themostat was installed.
Press the SYSTEM button to select Heat, Cool or Off.
Heat
/
Cool
MCR32592
• Heat: Thermostat controls only the heating system.
• Cool: Thermostat controls only the cooling system.
• Off: Heating and cooling systems are off.
• Auto: Thermostat automatically selects heating or
cooling depending on the indoor temperature.
(only for heat pumps with auxiliary heat):
Em Heat
Thermostat controls Emergency and Auxiliary Heat.
Compressor is locked out.
CAUTION: EQUIPMENT DAMAGE
HAZARD. To prevent possible
compressor damage, do not operate
cooling system when outdoor
temperature is below 50 °F (10 °C).
7
RTHL3550
69-2583ES—01

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