If no operating within 10s, it will exit the menu automatically and return to
normal temperature display status, and does not save the parameter of this modification.
5.3 Operating instruction:
In normal working status, press and hold “ ” key for more than 3s to turn off the
controller; in Power-off Status, press and hold “ ” key for more than 1s to turn on the
controller.
In normal working status, screen displays the current measuring value, the controller
switch modes between heating and cooling automatically.
If the measuring temperature ≥ temperature set value + difference set value, the
controller starts refrigerating, the cool indicator lamp lights on, and the refrigerating relay
is connected. When cool indicator lamp flashes, indicating that the refrigerating device is
under compressor delay protecting status.
If the measuring temperature ≤ temperature set value, the cool indicator lamp turns off,
and the refrigerating relay is disconnected.
If the measuring temperature ≤ temperature set value - difference set value, the
controller starts heating, the heat indicator lamp lights on, and the heating relay is
connected.
If the measuring temperature ≥ temperature set value, the heat indicator lamp turns off,
and the heating relay is disconnected.
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