Honeywell RTH230B Programmable Electronic Thermostat User Guide
3.2 Fan Operating Mode
3.7 Battery Replacement Indicator
Use the selector switch to set the fan to automatic
mode (AUTO) or continuous mode (ON).
An icon appears when the batteries need replacement.
This icon will flash for 120 days, then the thermostat
will cut power to the heating/cooling unit. The icon dis-
appears once the batteries are replaced.
Note: This switch is not used if you have a 2-wire
installation as the fan is not connected to the thermo-
stat.
After replacing the batteries, readjust the time and day (see section
5.1). However, the temperature and program settings are saved and
do not need to be re-entered.
•
•
If you have an electric furnace (see section 2.4), the fan
works only when heating or cooling is activated.
Warning: Before removing the batteries, place the
system switch on the thermostat to Off. Otherwise, the
heating/cooling unit might still be running even after
the batteries are removed.
If you have a gas or fuel oil furnace (see section 2.4), the fan
works as follows:
AUTO
ON
•
When the thermostat is placed in cool mode, the fan
works only when cooling is activated.
•
When the thermostat is placed in heat mode, the fan is
controlled by the furnace fan control circuitry.
4. Configuration Menu
The fan is always on.
To access the configuration menu, press both
buttons
3.3 Displaying the Temperature
simultaneously for 3 seconds.
The actual temperature is normally displayed. To view the setpoint,
To go to the next parameter (menu item), briefly press both
press once on one of the
buttons. The setpoint is displayed for
buttons simultaneously.
5 seconds along with the icon.
To modify a parameter, press one of the
buttons.
Note: Pressing either of the
change the setpoint.
buttons more than once will
Repeat steps 2 and 3 if necessary.
Press both
buttons simultaneously for 3 seconds to exit
the configuration menu.
3.4 Setting the Temperature
Press one of the
played.
buttons until the desired temperature is dis-
DISPLAY DESCRIPTION
Temperature display
Time display
DEFAULT
°F
OPTIONS
°C or °F
3.5 Thermostat Control Mode
12 h
12 h or 24 h
On or Off
3.5.1 Manual/Permanent Hold Mode
Early Start 1
Off
Maintains the temperature at a fixed setpoint. To place the thermo-
stat in this mode, press [ Mode ]. The house icon will disappear.
Heating cycles per hour 2
Cooling cycles per hour 2
2, 3, 4, 5 or 6 3
2, 3, 4, 5 or 6 4
4
4
3.5.2 Programmable Mode
Maintains the temperature according to the energy-saving sched-
ule. To place the thermostat in this mode, press [ Mode ]. The cur-
rent period will be displayed. The four possible periods are:
1 When Early Start is On, the thermostat determines when to start heating
or cooling so that the desired temperature is reached at the set time.
2 When either the heating or cooling parameter is displayed, use the sys-
tem mode selector switch to alternate between the two parameters.
3 For optimal heating control, use the setting that matches your system as
follows: 2=30 min (steam, gravity), 3=20 min (hot water, 90%+ high-effi-
ciency furnace), 4=15 min (gas or oil), 5=12 min (alternate setting for gas
or oil), 6=10 min (electric).
Wake up
Leave for work
Return home
Sleep
To see the default settings of each period, see section 5.2.
Temporary Bypass
4 The corresponding cooling cycle lengths are as follows: 2=30 min,
If you modify the temperature (using the
buttons) when the
3=20 min, 4=15 min, 5=12 min, 6=10 min
thermostat is in programmable mode, the new temperature will be
used for the next 2 hours. The house icon flashes during the
bypass. At the end of the bypass period, the thermostat returns to
the temperature settings of the period currently underway.
5. Programming
3.6 Filter Replacement Indicator
5.1 Setting the Time and Day
After 500 hours of operation, an icon appears to indi-
cate that the filter needs replacement. Once the filter
is replaced, press [ Filter ] for 3 seconds to remove
the icon and reset the counter.
Press [ Clk ]. The hour flashes.
Set the hour using
Press [ Clk ]. The minutes flash.
Set the minutes using
Press [ Clk ]. The day flashes.
.
.
Set the day using
.
Press [ Exit ] to exit.
RTH230B
69-1800—03 03-11 3/4
firealarmresources.com
| General | Details |
|---|---|
| Name | Honeywell RTH230B Programmable Electronic Thermostat User Guide |
| Make | Honeywell |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.48 MB |
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