Elecro Engineering G2 Manuel D'installation page 13

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Press and hold for 2 seconds to power the control on/off
Press to increase set temperature (required water temperature)
Press to decrease set temperature (required water temperature)
Press and release to activate / deactivate 'Priority Heating'
Time switching delay
To prevent overheating of the switch components within the heating
appliance caused by frequent on and off switching (cycling), the digital
controller has been pre-programmed with a time delay function.
This prevents rapid fluctuations in temperature or velocity from switching
the heating appliance on and off more than once in a two minute period.
The time delay mode is indicated by the flashing LED next to the
symbol on the digital display (figure 12).
Differential
When the water has reached the required temperature the heating
appliance will switch off and will not switch back on until the water
temperature has dropped 0.6˚C. This value is known as the differential and
is also in place to prevent overheating of the switch components caused
by cycling.
Priority Heating function ensures your water is constantly maintained at
the required temperature. When priority heating is activated the Priority
Heating Icon on the bottom right of the display will illuminate. The control
will now monitor the water temperature, and start both the circulation
pump and heating process when necessary.
NOTE: Priority Heating requires electrical connection to the filtration
pump contactor as shown fig. 13.
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