Honeywell RTH221B1039/U1 User Manual

10
Thermostat controls
M33612
Heat Off Cool Auto On
Fan
Heat Off Cool
Auto On
Fan
Set
Hold
Run
Set: Press to
set time/day/
schedule.
Hold: Press
to override
programmed
temperature
control.
Run: Press to
resume program
schedule.
Temperature
adjustment
Press the up or
down buttons
until you reach
the desired
temperature.
NOTE: Make sure
the SYSTEM switch
is set to the system
you want to control
(Heat or Cool).
Fan Switch is used to control your fan.
In “Auto” mode, the fan runs only when
the heating or cooling system is on.
If set to “On,” the fan runs continuously.
System Switch is used to control
your heating or cooling system.
• Heat: Heating system control.
• Off: All systems off.
• Cool: Cooling system control.
Display screen
M32701
We
Lo
Batt
Wake
Set
am
Heat
75
On
6
:
30
Low battery warning
(see page 15)
Setpoint indicator
Appears when the setpoint
temperature is displayed.
Temperature
The ambient (measured)
temperature is normally displayed.
To view the setpoint temperature,
press the Up or Down button once.
The setpoint temperature will
appear for five seconds.
System status
Cool on: Cooling system is on.
Heat on: Heating system is on.
When Cool On is flashing, compressor
protection is engaged (see page 14).
Current time
(see page 11)
Current day
(RTH2300 only)
(see page 11)
Current program period
Wake/Leave/Return/Sleep
(see pages 1113)

Honeywell RTH221B1039/U1 Specifications

General

Brand	Honeywell
Model	RTH221B1039/U1
Category	Thermostat
Language	English