International comfort products 21NHP Homeowner's Manual

MODEL- -21NHP
Universal Application Non- -Programmable Thermostat
MANUAL OPERATION
1. To Select the Mode:
Use the MODE button to move between the choices. OFF,
HEAT, AUTO (if enabled), COOL, or EMHT will appear
on the display. EMHT will only appear when setup for heat
pump application.
2. To Select the Fan Operation:
Use the FAN button to move between continuous fan (in-
dicated by the FAN ON icon) and auto fan operation.
3. To Read the Room Temperature:
The large display reads room temperature until a button is
pressed.
4. To Adjust the Setpoint:
In normal operation, the large display shows room temper-
ature. At the first press of the UP or DOWN button, the
large display shows the current setpoint and the SET TEMP
icon is turned on. Further presses of the UP or DOWN but-
ton adjust the setpoint upward or downward. Five seconds
after the last button press, the display returns to the room
temperature and the SET TEMP icon turns off.
KEY PAD LOCK OUT FEATURE
At installation and setup of your thermostat the keypad lockout
feature can be enabled. This feature when enabled, locks the
keypad. If any key is pressed and the thermostat is locked, "OF"
will be displayed in the temperature digits to indicate that manual
input is not allowed. It can be temporarily unlocked by
simultaneously pressing the UP and DOWN keys for 5 seconds.
Once unlocked, it will re- -lock 3 minutes after the last keypad
press.
AUXILIARY AND EMERGENCY HEAT
Auxiliary Heat
If the system has determined that it's too cold outside for your heat
pump to heat the house without help, the AUX HEAT icon will
indicate that the system is getting help from the electric heaters.
This happens automatically.
Homeowner's Guide
Designed and Assembled
in the USA.
Non- -Programmable Thermostat
Emergency Heat (EMHT)
If the heat pump is not working properly, you can manually turn
on the emergency heat by pressing MODE until EMHT appears.
You'll know there's a problem if the house can't seem to get warm
when it's cold outside. You want to avoid using emergency heat
continuously, though, because it's the most expensive option. If
you suspect a problem with your heat pump, call your heating and
cooling dealer immediately.
CHANGING BATTERIES
In some situations, two AA batteries are the power source for the
thermostat. If batteries are used with your equipment, then they
should last about one year. As the batteries lose their power, a
battery icon appears on the display showing one black bar and then
none. As the icon becomes empty, you will begin to lose
thermostat functions because the batteries are losing their power.
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When the batteries are completely dead, you won't be able to use
the thermostat.
When using batteries for power, we recommend you replace them
with two AA alkaline batteries. They are in a compartment under
the removable faceplate of the thermostat. You do not have to
remove the thermostat from the wall to replace the batteries
Simply use your thumb and forefinger to grasp and pull the
branded faceplate away from the thermostat to expose the batteries.
Lift out the batteries, and replace them.
Be sure to orient batteries in the direction indicated by the
embossed symbols shown on the plastic.
Universal Application
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