A419ABG-3 Electronic Temperature Control Installation Instructions
5
Temperature Offset
(
OFS
)
establishes a set
secondary
Setpoint
and
Differential
values that may
be invoked to control an application when a circuit is
closed between the binary input (
BIN
) and common
(
COM
) terminals (and
BIN
appears on the display).
See Figure 6. Offset range is 0 to 50F° or C° (in
1-degree increments). A typical application might use
a switching time clock to invoke night-setback
temperature settings.
IMPORTANT:
Make sure the Touchpad Lock
jumper is installed (unlocked) before attempting to
adjust the A419 control functions. See
Figure 5
.
Changing the A419 Control Temperature Units
The A419 control is factory set to display Fahrenheit
temperature. To change to Celsius, press
Up
and
Down
(arrows) simultaneously. Press them again to
display Fahrenheit units. Verify that the control is
displaying the desired temperature units before setting
the Setpoint.
Setting the A419 Control Setpoint Value
To view and adjust Setpoint, follow these steps:
1. Press and hold MENU (about 2 seconds) until the
display flashes SP.
2. Press MENU again to display the existing setpoint
value.
3. Press Up or Down (arrows) to change the setpoint
value.
4. Press MENU again to save the new value. The
display returns to the sensed temperature.
If no setup entry is made for 30 seconds, the control
reverts to the (normal) temperature display.
IMPORTANT:
If MENU is not pressed after
changing the setpoint value, the control reverts to
the previously programmed setpoint value.
MENU
F
BIN
MENU
Button
DOWN
Arrow
Button
UP
Arrow
Button
Output Relay
Status Indicator
LED
Operating Mode
Indicator
Temperature
Units Indicator
Temperature
Offset Indicator
Liquid Crystal
Display
Figure 6: Liquid Crystal Display, Touchpad, and
LED Indicator
Table 3: Display Symbols, Control Function, Ranges, Units, Values, and Factory Settings
Display
Symbol
Control Function
Range – Units/Value
Factory Set
Value
SP
Setpoint*
-30 to 212 –
°
F (-34 to 100 –
°
C)
30
dIF
Differential*
1 to 30 – (F
°
or C
°
in 1-degree increments)
5
ASd
Anti-short Cycle Delay
0 to 12 – (in 1-minute increments)
1
OFS
Temperature Offset
0 to 50 (F
°
or C
°
in 1-degree increments)
0
SF
Sensor Failure Operation
(No range) –
0 = output relay de-energized
1 = output relay energized
1
F or C
Temperature Units
(No range) – F
°
or C
°
F°
BIN
Temperature Offset Indicator
(No range) – BIN is displayed and the A419 control
operates on the secondary setpoints when the circuit
between the BIN and COM terminals is closed.
N/A
or
Cooling or Heating Mode of
Operation
(No range) –
(Cooling Mode) is displayed when the
Jump1 jumper is removed. (Heating Mode) is displayed
when the Jump1 jumper is installed.
Cooling Mode
*
The sum of the Setpoint and Differential values must be within the Setpoint range, or the control may not function
properly.
