Honeywell RTHL3550 User Manual

12
Display screen
MCR32587
Inside
Heat
System
Fan
Auto
Setting
Replace
Battery
Heat
Heat On
Current inside temperature Temperature setting
System status
Indicates system is on.
(Cool On or Heat On.)
System setting
Press the SYSTEM button
to select Heat, Cool or Off.
Fan setting
Press the FAN button to
select Auto or On.
In “Auto” mode (the most commonly
used setting), the fan runs only when
the heating or cooling system is on. If
set to “On,” the fan runs continuously.
• Heat: Thermostat controls only the heating system.
• Cool: Thermostat controls only the cooling system.
• Auto: Thermostat automatically selects heating or
cooling depending on the indoor temperature.
• Off: Heating and cooling systems are off.
Thermostat controls
MCR32585
Digital display
Battery holder
Function buttons
Press to select the function displayed just above each
button. (Functions change depending on the task.)
Temperature buttons
Press to adjust
temperature settings.

Honeywell RTHL3550 Specifications

General

Brand	Honeywell
Model	RTHL3550
Category	Thermostat
Language	English