OH-1202H Universal Humidity Touchscreen Thermostat Instruction Manual
OPERATINGYOUR THERMOSTAT
Choose the Fan Setting (Auto or On)
Emergency Mode
Applies only to Heat Pump Systems
Fan Auto is the most commonly selected setting and runs the
fan only when the heating or cooling system is on.
Emergency Heat (System EM Position) bypasses the Heat
Pump to use the heat source wired to terminal W/E, W2 on
the thermostat. EM is typically used when compressor opera-
tion is not desired, or you prefer back-up heat only.
Fan On selection runs the fan continuously for increased air
circulation or to allow additional air cleaning.
Tip: Running the fan more frequently will increase your
energy consumption. Most systems use a 1/2 or 1/3 HP
electric motor to power the fan.
1. Press SYSTEM key to select EM. “EM Heat Mode” will
flash on the display.
2. Press
to adjust thermostat setting above room tem-
Choose the System Setting
(Cool, Off, Heat, Em, Auto)
perature. The Emergency heating system will begin to
operate. The display will show “System On” flashing “EM
Heat Mode” and “Heat” to indicate that the Emergency sys-
tem is operating.
Press the SYSTEM key to select:
Cool: Thermostat controls only the cooling system.
Off: Heating and Cooling systems are off.
3. Adjust temperature setting to 3° above room temperature.
Any additional stages of auxiliary heat should begin to
operate and the display will show "System On +2".
Heat: Thermostat controls only the heating system.
Em: Setting is available only when the thermostat is config-
ured in HP1 or HP2 mode.
4. Press to adjust the thermostat below room tempera-
ture. The heating system should stop operating.
Auto: Auto Changeover is used in areas where both heating
and cooling may be required on the same day. AUTO allows
the thermostat to automatically select heating or cooling
depending on the indoor temperature and the selected heat
and cool temperatures. When using AUTO, be sure to set the
Cooling temperatures more than 1° Fahrenheit higher than
the heating temperature.
CAUTION
!
To prevent compressor and/or property damage, if the
outdoor temperature is below 50°F, DO NOT operate
the cooling system.
Manual Operation for
Non-Programmable Mode
Cooling/Dehumidifier
1. Press SYSTEM to select "Cool".
Press the SYSTEM key to select "Heat" or "Cool" and use
the keys to adjust the temperature to your desired setting.
After selecting your desired settings you can also press the
SYSTEM key to select AUTO to allow the thermostat to auto-
matically change between "Heat" and "Cool".
2. Press
to adjust the thermostat setting below room tem-
perature. The blower should come on immediately on high
speed, followed by cold air circulation. The display should
show "System On". If the setpoint temperature display is
flashing, the compressor lockout feature is operating (see
Configuration menu, item 11).
Manual Operation (Bypassing the Program)
Programmable Mode
3. Adjust temperature setting to 3° below room temperature.
The second stage cooling should begin to operate and the
display should show "System On +2".
Manual operation will bypass the program and allow you to
adjust the temperature as you desire. The temperature you
set in Hold will be maintained indefinitely. Press
or
to
4. Press
to adjust the temperature setting above room
temperature. The cooling system should stop operating.
adjust the temperature. The HOLD key will appear. Press the
HOLD key. "Hold At" will appear next to the setpoint tem-
perature and the thermostat will maintain the new setpoint
temperature until Run Schedule is pressed to resume pro-
gram operation.
To check the dehumidifier when System On appears and
the cooling system is running press HUMIDITY* button once.
Press
humidity level setpoint range. DeHum On will appear indicat-
to adjust the humidity 2% or more below the room
ing it is calling for the dehumidification.
Program Override (Temporary Override)
If the room humidity is lower than the adjustment range, press
to 40% and hold it for four seconds. This will force the De-
Hum On for one complete cooling cycle to test the dehumidi-
fication equipment.
Press
or
keys to adjust the temperature. This will over-
ride the temperature setting for a (default) four hour override
period. The override period can be shortened by pressing
or lengthened by pressing . Program Override period can
range from 15 minutes to 7 days.
After adjusting the humidity setting the display will return to
temperature in approximately 10 seconds. To switch the dis-
play back to temperature immediately after adjusting humidity
setting press HUMIDITY again.
Example: If you turn up the heat during the morning program,
it will be automatically lowered later, when the temporary hold
period ends. To cancel the temporary setting at any time and
return to the program, press Run Schedule.
*Note: If Auto Schedule is displayed instead of Humidity,
Auto Schedule must be turned off in the Configuration Menu.
If the SYSTEM key is pressed to select AUTO the
thermostat will change to "Heat" or "Cool", whichever
ran last. If it switches to "Heat", but you want "Cool", or it
changes to "Cool", but you want "Heat", press both keys
simultaneously to change to the other mode.
11
| General | Details |
|---|---|
| Name | OH-1202H Universal Humidity Touchscreen Thermostat Instruction Manual |
| Make | OH |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.42 MB |
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