Thermcraft XST-6-0-36-3V - Manual (Page 54)

Operation Installation and Operation Handbook
2-4 2408 and 2404 Controller
BASIC OPERATION
Switch on the power to the controller. It runs through a self-test sequence for about three
seconds and then shows the measured temperature, or process value, in the upper readout and
the target value, called the setpoint, in the lower readout. This is called the Home display.
2404
OP1 OP2
SP2 REM
AUTO
MAN
RUN
HOLD
Figure 2-4 Home display
You can adjust the setpoint by pressing the
or buttons. Two seconds after releasing
either button, the display blinks to show that the controller has accepted the new value.
OP1 will light whenever output 1 is ON. This is normally the heating output when used as a
temperature controller.
OP2 will light whenever output 2 is ON. This is normally the cooling output when used as a
temperature controller.
Note: You can get back to this display at any time by pressing
and together.
Alternatively, you will always be returned to this display if no button is pressed for 45
seconds, or whenever the power is turned on.
Alarms
If the controller detects an alarm condition, it flashes an alarm message in the Home display.
For a list of all the alarm messages, their meaning and what to do about them, see Alarms at
the end of this chapter.
Measured temperature
or process value
Setpoint
SP2 REM
OP2 OP1
2404