15
1
2
a
b
Figure 10. How to change the Temperature set point (a
–
b)
The set point regulation page will appear as in Figure 10 b. You can modify the set point by clicking on +
and -
. Once you have input the new set point temperature, press “
Set
” to save or “
Cancel
” to undo.
Tip
►
After any change in the set point value the controller enters into a transient regime, the Status
Indicator and the Top LED turn yellow (see paragraph 8.1.2). During the transient regime, the controller will
not trigger on alarm.
8.1.2
Controller Status: colours led and meaning
The H201-T-UNIT-BL can assume four different status, which are represented by the colors assumed by
the Status Indicator (pointer 1 in Figure 9) and by the TOP LED (if enabled, as indicated in paragraph 8.2.2.3):
The GREEN color indicates that the set-point value has been reached (within the
tolerance defined in the alarm subpage, see paragraph 8.2.2.5) and that the system is working
properly.
Controller Status: NORMAL
The YELLOW color indicates that the controller is in transient regime. The Yellow light
will appear after the controller is turned on and after any set point chance. The system is working
properly, it is not in alarm and no action is needed. As soon as the H201-T-UNIT-BL stabilizes the
temperature, the Controller Status changes to NORMAL and the color turn GREEN. If the H201-
T-UNIT-BL cannot stabilize the temperature of one or both heating devices within the maximum
time defined by the operator (see paragraph 8.2.2.5), the Controller Status changes to ALARM
and the color turn ORANGE.
Controller Status: TRANSIENT
The ORANGE colour indicates that the current Temperature value is out of the tolerance
defined in the alarm subpage (see paragraph 8.2.2.5). The controller triggers in Alarm.
Controller Status: ALARM
The RED color indicates that there is a problem with the unit itself (for example a
Temperature
sensor is broken). The system is in alarm. Turn the system off, wait for 5 minutes,
and turn it back on. If the color is still red, contact Okolab at www.oko-lab.com for support.
Controller Status: ALARM
Tip
►
The Top LED (see Figure 11) follows the same color code as the status LED.
To activate the Top LED, follow the instructions reported in paragraph 8.2.2.3.