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• After every break in electricity supply or voltage fall below 175V, G-201 will prevent compressor
from switching on for time defined by parameter ‘c2’. However, if ‘c2’=0min, protection will last
60 seconds.
• When the unit is connected by the button there is a 5-seconds delay before the compressor is
switched on. It should be emphasised that in this way all other protections are cancelled. Thanks
to that, operation of the compressor can be checked quicker.
6. Alarms of sensors – A1 and A2
The controller is provided with alarms which inform of defects of sensors. A defect of a sensor is
signalled by appearance of a corresponding symbol on the display.
A1 – damage of chamber temperature sensor. G-201 will connect the compressor in a time cycle (so
called: clock control) according to time defined in parameters ‘c8’ and ‘c9’. Defrosting will function
normally.
A2 – damage of evaporator sensor. Manual and automatic defrosting is blocked !!! The unit may
be defrosted only when it is switched off by the button and ice melts down in time.
Breakdown of two sensors simultaneously – only symbol A1 is displayed. When chamber sensor
is repaired, A2 will appear.
7. Overheating alarm - A4: refers to program version 02
If temperature in the chamber is higher than the parameter D6, alarm A4 and temperature appear on
the display alternately and a sound alarm is generated (if G-201 is provided with sound signalling).
When any button is pressed, the sound alarm stops.
8. Temperature monitoring
When is pressed for 0.5 second, the display will begin to flash and show evaporator temperature,
after the following 5 seconds G-201 will show chamber temperature again. Notice!!! This function
works also during defrosting when ‘dF’ appears on the display. Chamber sensor temperature can be
seen also when is pressed for 0.5 second, the display will show (without flashing) chamber
temperature, after the following 5 seconds ‘dF’ will be displayed again.
B - Defrosting
1. If additional defrosting is necessary in result of difficult conditions of operation, the button
should be pressed. Then the green diode will light permanently on the button and ‘dF’ will appear
on the display instead of measurement of temperature. This moment the unit will begin a defrosting
cycle.
2. If defrosting takes place and temperature on evaporator is higher than temperature set in parameter
‘d2’, after about 10 seconds the unit will begin the end phase of defrosting and after its end it will
start further operation.
If defrosting takes place and temperature on evaporator is lower
than temperature set in parameter
‘d2’, G202 will switch on defrosting and when temperature in parameter ‘d2’ is reached, the
procedure of the end of defrosting will begin (signalled by a flash of the green diode on the button
) consisting of one dripping phase in which the compressor is off for time defined by parameter
‘c3’.
3. Defrosting will end when evaporator will reach temperature set in parameter ‘d2’ or when time set
in parameter ‘c1’ is exceeded.
4. When ‘dF’ disappears and defrosting is finished, the display shows the temperature that was
memorised just before the beginning of defrosting for the whole time defined in parameter ‘c7’: this
is to prevent complaints because of ‘sudden changes of temperature in the unit’.
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