Honeywell Home RTH221 Guia Del Usuario

RTH221 Programmable
Thermostat
1. OPERATION
1.1 Controls
Press to set clock
or schedule
Press to override
schedule and hold
temperature
Press to run (follow)
programmed schedule
1.2 Display Screen
Setpoint Indicator
Appears when the setpoint
temperature is displayed
Low-battery warning Low-battery warning
Permanent
schedule override
Schedule period
1
When Cool On is flashing, this means the compressor
protection is engaged (see section 1.7).
1.3 Setting the Clock
1. Press the Set button. The message Set
Time will appear on the screen and the
time display will flash.
2. Press the  or  button to set the time.
3. Press the Run button to save the changes
and exit. (The changes are also saved if you
do not press any button for 60 seconds.)
NOTE: The clock has lost its settings when the time dis-
play flashes. If the thermostat is following the
programmed schedule, it will use the temperature
settings programmed for the Wake period until
you readjust the clock.
1.4 System switch
Use the System switch to place the system in one of the
following modes.
• Cool: System is in Cooling mode.
• Off: System is off.
Fan switch • Heat: System is in Heating mode.
System switch
Temperature
adjustment buttons
1.5 Fan switch
Use the Fan switch to select the fan operation.
• Auto: The fan runs only when heating or cooling is
Clock
actually taking place (commonly used setting).
• On: The fan runs continuously.
Temporary
Schedule Override
1.6 Temperature setting
Temperature
Press the  or  button once to display the setpoint
temperature. Press either button more than once to
System status
change the setpoint.
Cool On: Cooling is
activated¹
The ambient (measured) temperature is normally
Heat On: Heating is
activated
displayed. To view the setpoint temperature, press either
of the temperature adjustment buttons once. The setpoint
temperature will appear for five seconds.
1.7 Built-in compressor protection
Your thermostat has a feature that helps prevent damage
to the compressor of your air conditioning system.
Because damage can occur if the compressor is restarted
too soon after shutdown, this feature forces the
compressor to wait five minutes before restarting. During
the wait time, the message Cool On flashes on the screen.
When the safe wait time has elapsed, the message stops
flashing and the compressor turns on.
2. PROGRAMMED SCHEDULE
2.1 Using the schedule
Press the Run button to follow the programmed schedule.
You can have up to four periods in one day. Each period
can be programmed with a different temperature setting.
CAUTION
EQUIPMENT DAMAGE HAZARD
Do not use Cooling mode when the outdoor
temperature is below 50 °F (10 °C).
USER GUIDE
69-2062EFS-03