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do not cut the sensor cable at a distance of less than 0.5m from the shell
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it is not recommended to extend the sensor cable beyond 20m.
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THE WAY OF CONNECTING THE SENSOR CABLES TO THE SENSOR TERMINALS OF THE ACTUATOR MODULE IS
FREE!!! (similar to the method of inserting the plug into the ~230V socket)
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to extend the cables, we suggest using an OMY 2x0.5mm cable
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connection of cables in case of extension should be done very carefully, each pair of wires is
soldered and heat-shrinkable sleeves are put on them; then, the place of connection should be
flooded with waterproof silicone and another heat-shrinkable sleeve should be clamped on it
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ends of the wires connected to the SBR should be whitened with tin.
VI. GENERAL OPERATION PRINCIPLES
A. General Information
1. After connecting power supply the device performs a 3-second initialising procedure during which the
display shows two dots for a second, controller software release for another second, and two dots
again. During this time, none of the controlled devices is switched on.
2. After performing the start-up procedure from point 1, two horizontal dashes will light up in the middle
segments of the display, indicating the “energized” state – if the device has not been previously
switched on!!! The device is started by pressing the button . The display shows value of the
temperature indicated by the chamber sensor.
3. After pressing and holding for 0.5 seconds, the display will start flashing and show the
temperature of the evaporator, after another 5 seconds GC207 will automatically return to reading the
temperature from the chamber. Attention!!! This function also works during defrosting when 'dF'
lights up on the display. You can also see the temperature from the chamber sensor by pressing
for 0.5 seconds, the display will start showing (without blinking) the chamber temperature, after
another 5 seconds GC207 will automatically return to displaying 'dF'.
4. Compressor activation is indicated by lighting of a small red diode (dot) in the lower right corner of
the temperature display. This allows easier checking of possible system malfunctions.
5. If the compressor is to be switched on, the P5 compressor is switched on and then, after 6 seconds, the
P1 compressor. Similarly, in case of switching off, P5 is switched off first and after 6 seconds P1.
6. Should the compressor be switched on, but it is not due to the activation of one of the protections (see
point 7, 8), the dot indicating the compressor operation will blink. After the set protection time has
elapsed, the dot will light up permanently and the compressor will be turned on.
7. The delay in switching on the compressor after reaching its activation temperature (temperature set
by the user minus the lower hysteresis value) is 30 seconds. If the temperature drops during that
period, the system re-checks if the 30-second condition has been exceeded. This is to protect the
compressor from unnecessary activation, for example caused by putting goods in, draughts, etc.
8. Every time the temperature setting is reached (the user temperature setting plus the upper hysteresis
value) and after every power outage or drop below 175V, the GC207 allows to re-activate the
compressor for the time determined by the 'c2' parameter. However, if the 'c2' = 0min, then the
protection after power outage continues for 60 seconds.
9. After switching on the device with the button, there is a 5-second delay in switching on the
compressor. Please note that this will cancel the current loss protection from point 7 –this also applies
to the time specified by the 'c2' parameter after the compressor has been turned off. This allows
quicker checking of the compressor operation.
