2
Programming Steps and Display Mode
The ETC two stage can be programmed in seven simple steps using the
LCD display and the three keys on the face of the control.
Step 1 To start programming, press the
SET
key once to access the
Fahrenheit/Celsius mode. The display will show the current
status, either
F
for degrees Fahrenheit or
C
for degrees
Celsius. Then press either the up
Ç
or down
È
arrow key
to toggle between the
F
or
C
designation.
Stage 1
Step 2 Press the
SET
key again to access the stage 1 setpoint. The
LCD will display the current setpoint and the
S1
annunciator
will be blinking on and off to indicate that the control is in the
setpoint mode. Then press either the up
Ç
key to increase
or the down
È
key to decrease the setpoint to the desired
temperature.
Step 3 Press the
SET
key again to access the stage 1 differential.
The LCD will display the current differential and the
DIF 1
annunciator will be blinking on and off to indicate that the
control is in the differential mode. Then press either the
up
Ç
key to increase or the down
È
key to decrease the
differential to the desired setting.
Step 4 Press the
SET
key again to access the stage 1 cooling or heating
mode. The LCD will display the current mode, either
C1
for
cooling or
H1
for heating. Then press either the up
Ç
or
down
È
key to toggle between the
C1
or
H1
designation.
Stage 2
Step 5 Press the
SET
key again to access the stage 2 setpoint. The
LCD will display the current setpoint and the
S2
annunciator
will be blinking on and off to indicate that the control is in the
setpoint mode. Then press either the up
Ç
key to increase
or the down
È
key to decrease the setpoint to the desired
temperature.
Step 6 Press the
SET
key again to access the stage 2 differential.
The LCD will display the current differential and the
DIF 2
annunciator will be blinking on and off to indicate that the
control is in the differential mode. Then press either the
up
Ç
key to increase or the down
È
key to decrease the
differential to the desired setting.
Step 7 Press the
SET
key again to access the stage 2 cooling or heating
mode. The LCD will display the current mode, either
C2
for
cooling or
H2
for heating. Then press either the up
Ç
or
down
È
key to toggle between the
C2
or H2 designation.
Press the
SET
key once more and programming is complete.
Refer to Page 3 for an illustrated guide to programming the ETC.
NOTE:
The ETC will automatically end programming if no keys are
depressed for a period of thirty seconds. Any settings that have
been input to the control will be accepted at that point.
All control settings are retained in non-volatile memory if power to
ETC is interrupted for any reason. Re-programming is not necessary
after power outages or disconnects unless different control settings
are required.
Figure 3: One Stage Cooling and One Stage Heating Example
Figure 2: Two Stage Cooling Example
Figure 1: Two Stage Heating Example
