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TH146-P-DE
User’s Guide
Programmable Heat Pump Controller
TH146-P-DE 400-280-004-C 11/29/06 7/9
n Press Clk. The hour display flashes.
o Set the hour using .
p Press Clk. The minute display flashes.
q Set the minutes using .
r Press Clk. The day display flashes.
s Set the day using .
t Press to return to the normal display.
n Press Clk for 3 seconds to display the year.
o Set the year using .
p Press Clk to display the month.
q Set the month using .
r Press Clk to display the date.
s Set the date using .
t Press to return to the normal display.
Press the Fan button to select the fan operating mode.
• In automatic mode, the fan runs only when heating or cooling is
activated.
• In continuous mode, the fan runs continuously and the sym-
bol is displayed. NOTE: If the “smart fan” feature is enabled,
the fan will run only when heating or cooling will be activated
during unoccupied mode.
The controller normally displays the measured indoor temperature.
To view the setpoint, press one of the buttons. The setpoint will
be displayed along with the symbol for the next 5 seconds.
Press Mode to place the system in one of the following modes:
Time and day setting
Programming
Program day selection
Program clear
Humidity setting
Return
Temperature
adjustment
mode selection
Fan operating
mode selection
System operating
mode selection
Up/Down buttons
Indicator LEDs
FAULT: System fault
EH: Emergency heat mode
DE: Dual-energy mode
Day
Clock
Indoor temperature
Outdoor temperature
Indoor humidity
Indicator LEDs
Backlight
During normal display, the screen
illuminates for 12 seconds when
any button is pressed. When the
controller is being configured, the
screen remains lit until it returns
to normal display.
5. General Setting
5.1
Clock and Day Setting
5.2
Date Setting
5.3
Fan Operating Mode
6. Temperature Setting
6.1
Display
6.2
System Operating Mode
HEAT The system is in heating mode.
COOL The system is in cooling mode.
AUTO
The system is in automatic changeover. (The system
switches between heating mode and cooling mode to
maintain the desired temperature.)
OFF Both heating or cooling are off.
EHEAT
The system is in emergency heat mode. Only auxiliary
heating is used when there is a call for heat.
Heating is On
Cooling is On
System operating mode
Fan operating mode
(appears when the fan
is in continuous mode,
disappears when it is in
automatic mode)
Temperature adjustment
mode (appears when the
controller is in automatic
mode, disappears when it
is in manual mode)
Auxiliary heating is On
Appears when the
temperature setpoint
is displayed
Indoor temperature