Geco G-202-P00 User manual

SERVICE OPERATING MANUAL
FOR SELF-CONTAINED CONTROL BLOCK (S.C.C.B.)
G-202-P00
VERSION FOR COOLING APPLIANCES
For software version 02
We kindly request that you study this manual carefully PRIOR to connecting and starting up any of our
equipment. Should you have any queries or doubts, please contact us between 8 a.m. and 4 p.m. Any
comments e-mailed will be appreciated.
Note !!! The date of the last update is given at the bottom of the consecutive pages, while
information regarding the consecutive changes in the programme version and operation
method are given at the end of page XV.
Please, use always the newest version of operating manual which can be received free of charge by
mail after submission of an order.

Page 2 Service Manual for Producers SCCB TYPE G-202-P00
PPUH „GECO” EDITION I PRINTOUT DATE 2014-03-27
Table of contents
I. GENERAL CHARACTERISTICS .......................................................................................... 3
II. METHOD OF MARKING AND TECHNICAL DATA .............................................................. 3
III. ORDERING METHOD...................................................................................................... 5
IV. DELIVERY, INSTALLATION AND HOOKUP........................................................................ 5
V. THE PRINCIPLE FOR INSTALLATION OF SENSORS, TYPES OF PROTECTIVE CASES.............. 6
VI. OPERATION METHOD.................................................................................................... 7
A-GENERAL INFORMATION ............................................................................................................................7
B-DEFROSTING............................................................................................................................................8
C-THE DOOR OPENING SENSOR OPERATION PRINCIPLE .........................................................................................9
D-HYSTERESIS.............................................................................................................................................9
VII. UNIT PARTICULAR COMPONENTS ACTIVATION GRAPHS .............................................. 10
VIII. SYSTEM PARAMETERS PROGRAMMING....................................................................... 13
IX. CHANGES IN THE CONTROL .......................................................................................... 15
X. PROBLEMS AND THEIR REMOVAL................................................................................ 16
XI. RETURNS FOR REPAIR ................................................................................................. 18
XII. METHOD OF CONNECTING DEVICES TO THE CONTROLLER ........................................... 19
XIII. OPERATION OF G-202: FOR USER................................................................................. 20

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PPUH „GECO” EDITION I PRINTOUT DATE 2014-03-27
I. GENERAL CHARACTERISTICS
The Self-contained Control Block, called further G-202-P00 is a modern device, comfortable and easy to
use. The controller has been made using microprocessor techniques with the application of automatic surface
assembly process.
Owing to the twin part case and revolutionary technical design, the G-202-P00 can be applied to any
refrigerated counters or refrigeration chambers. The safe voltage operated control panel (5 V) may be installed
in any place, without the necessity of cutting any additional openings or running a number of power supply
cables far away from the equipment being controlled.
The G-202-P00 has been equipped with two temperature sensors, provides the possibility of
connecting doors opening sensors to the executive module, which are safe voltage operated (5 V), as well as
four outputs allowing direct connecting of the 230 V operated equipment, with loading ability as summarized in
table 1.
At the special request of the Customer, the G-202-P00 may also be equipped with an additional
evaporator frosting detection system, connected to the thermostat, causing the unit to automatically enter the
defrosting mode.
If the G-202-P00 is used in refrigeration devices, it stabilizes the temperature, as well as controls
automatic defrosting, the period of which may be adjusted to specific surrounding parameters; it is also
equipped with a pushbutton for activating manual defrosting. The G-202-P00 has also been equipped with
lighting system switch over that operates independently of the main switch.
No special maintenance measures are required for these thermostats; the keyboard has been made
from the special kind of foil, high temperatures resistant as well as resistant to most chemicals. However,
cleaning this foil with sharp objects is not allowed. Instead, use the damp cloth and clean the front panel with it
from time to time.
II. METHOD OF MARKING AND TECHNICAL DATA
Model: G- 202 –P 00K X X –M XXXX X
Position: 1 2 3 4 5 6 7 8 9 10 11
1- ‘Geco’ thermostat.
2- Use in: refrigeration
3- Casing: 02 –minipanel
4- The beginning of symbols related to panel configuration (keyboard).
5- Version 00 –universal.
6- Temperature setting from: К- keyboard.
7- Light button: L –yes, 0 –no.
8- Sound signalling: В – yes, 0 –no
9- The beginning of symbols related to the executive module configuration.
10-Which relays are installed. Detailed description below.
11-Door open sensor: D- mechanical or magnetic door sensor; Y- optical door sensor; 0- no possibility
to connect door sensor.
Additional information on marking of relays:
Digits mean existence of the relay, 0- no relay:
1 –compressor relay (must exist)
2 –light relay,
3 –fan relay,
4 –heater/valve relay,

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The simplest thermostats are equipped with the following:
1000 –compressor
1200 - compressor and lighting system
While the mostly developed ones are equipped with the following:
1034 - compressor, fan, heater,
1234 - compressor, lighting system, fan, heater,
Another examples:
1030 - compressor and fan
1004 - compressor and heater
1230 - compressor, lighting system, and fan
1204 - compressor, lighting system and heater
Operating Voltage - 230V +10% -15%
Ambient Temperature - +5°C to +40°C
Relative humidity - 20% to 80%
Protection degree - IP65 on the front side of the control panel
Table 1 –Marking of relays and Outputs Loads
Output
Relays
Load
P1 –compressor
30A
8A
2HP
1500W
P2 –lighting system
16A
4A
-
750W
P3 –fan
16A
4A
1HP
750W
P4 –heater/valve
16A
8A
-
1500W
Note !!!
Currents as specified in the Table are currents consumed by
particular equipment during normal operation and include starting
currents of this equipment !!!
The aggregate current consumed simultaneously may not exceed 10A !!!

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III. ORDERING METHOD
The following parameters need to be given in the order, namely:
1. Full controller name, e.g. G-202-P00KLB-M1234D
2. The length of tape connecting the executive module and keyboard panel.
3. Temperature sensors lengths.
4. Length of the cable leading to the door opening sensor.
5. Also, door opening sensors can be ordered, operating fully without contact:
magnetic sensor with the range 1-2 cm.
optical sensor with the range 1-2 cm.
IV. DELIVERY, INSTALLATION AND HOOKUP
1. In the appropriate place within the unit cut a hole with dimensions 29x71mm.
2. Executive module should be mounted on the rail and locked by the latch.
For store equipment the SCCB executive module MUST be mounted on the rail set to down towards
the floor!!!
3. Any metal elements, through which the G-202-P00 or its cables are run should be ground or protected
otherwise. Fitting G-202-P00 to enable direct action of water on it (e.g. water condensating on the
bottom cover of the shop window), touching the outlet pipe from the evaporator etc. and changing
considerably its temperature in relation to the ambient temperature (e.g. fitting in the immediate
proximity of the compressor and its accessories, cooled and heated elements) is not allowed.
4. Cut the ribbon connecting the panel with the actuator into the desired length plus 2-3cm. Then, after
running it through all penetrations, cut it once more by cutting its ends at right-angle and clip the plugs
on it so that the end of the ribbon be hidden to approx. 0.5mm. The ribbon must be introduced
perpendicular to the plug and clipped so as to make its twisting or non-parallel layout impossible.
Connecting the ribbon to the connectors (see point XII, drawing 3).
5. After fastening the G-202-P00, connect the power cables according to the description provided on the
actuator wall. Depending on the G-202-P00 version some outputs may be not used - on the label with
the description they will not be described and the type symbol in the corresponding places will contain
zeroes - do not connect any conductors to these outputs!!!
6. The applied connectors are certified for continuous load of 16A!!! They incorporate fine thread and
special lamellae, which prevent the wires from being cut, therefore only light tightening ensures
maximum good contact and the use of greater force may lead to stripping out of the thread. In the
result this may lead to the socket melting and short-circuit !!!
7. Any cable surplus should be cut down or winded up and clamped using special plastic bands. The cables
must be firmly secured on its entire length and must not get in contact with the compressor and its
equipment
8. After connecting the unit to the power source there can be voltage across the lighting cable
regardless of switching on or off the unit with the button therefore the starter or the
fluorescent lamp should be replaced only with the power cord disconnected from the plug!!!
THE SAME APPLIES WHEN CARRYING OUT ANY OTHER REPAIRS !!!

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9. If heaters are used, their power must be fitted correctly, which means that during failure of the G-202
or of the external contactor and switching them on for good, there were no possibility of fire or the
device damage.
If great power heaters are used then the safety thermostat must be absolutely applied on the
evaporator. This thermostat must operate on the different principle, for instance: mechanical
thermostat.
V. THE PRINCIPLE FOR INSTALLATION OF SENSORS, TYPES OF
PROTECTIVE CASES
1. For each type of the manufactured equipment a place for securing the sensors and the SCCB settings
should be determined experimentally. Absolutely do not change the fastening location nor the way the
sensors are secured nor modify SCCB settings without prior carrying out new tests relating to temperature
stabilization and equipment defrosting cycle !!!
2. Fastening of the chamber sensor must be done in such a way so that it does not get in contact with food
products and is not exposed to damage when cleaning the equipment. The sensor can be fixed using a
special plastic bracket. This solution causes fast (on/off time delays see VI p. and 6 and 7) response of the
sensor and the entire thermostat to the change in the air temperature in the unit. When desired or
necessary to slow down and "smooth" the time of sensor response to the temperature changes we
recommend to fix it to the metal part of the unit.
3. Fasten the evaporator sensor in the way to ensure maximum and good contact with the evaporator lamella
and in place where ice remains for the longest time during defrosting. Its fastening should prevent it from
being pushed out by the growing ice. The sensors, wherever possible, should be fixed vertically so that the
cable exits from the bottom of the sensor.
4. Sensor cables can be shortened or extended in any way, however with respect to the following rules:
-do not cut the sensor cable at a section smaller than 0.5 m. From the case
-it is not recommended to extend the sensor cable to more than 20 m.
-THE SENSOR CABLES CAN BE CONNECTED TO THE TERMINALS OF THE ACTUATOR SENSORS IN ANY
WAY!!!
(in the same way as you connect the plug to the ~230V outlet)
-for cable extension we recommend using OMY 2x0.5 mm type conductor
-connect the extended cables with great care, by soldering each pair of cores and put thermally
shrinkable jackets on them. Then apply water-proof silicone on the joint and clamp one more thermally
shrinkable jacket on it.
-whiten the ends of the conductors connected to SCCB with tin

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VI. OPERATION METHOD
A - General Information
1. Having turned the equipment on, the three-second starting procedure is activated, during which the display
will show two dashes, for the period of two seconds, and then for the period of one second, the version of
the controller program will be displayed, as well as two to dashes. No activation of the equipment under
control takes place then.
2. Following the completion of the starting procedure, two horizontal dashes signalling the energizing status
will light up on the central segments of the display - if the unit has not been in “on” mode before!!!. The
unit will be activated after pressing the pushbutton . The display will show the temperature value of
the chamber sensor.
3. Having pressed and held down the pushbutton for the period of a half second, the display will start
blinking and showing the evaporator temperature, while after the consecutive five seconds, the G-202-P00
will automatically re-enter the chamber temperature readout mode. Note!!! This function is also activated
during the defrosting time, when the display shows the „dF” symbol. The temperature of the chamber
sensor can also be seen by pressing for 0,5 second, which will make the display show the chamber
temperature (without blinking) to automatically re-enter the displaying of the „dF” symbol mode after the
consecutive five seconds.
4. The compressor activation is signalled by the small red diode in the right, bottom corner of the display
showing the temperature. This allows easier check of possible damage and mall functions to the system.
5. If the compressor should have turned on, but the compressor has not been turned on due to the activation
of any of the protection systems (see points 6, 7, 10 and 11), the dot signalling the compressor's operation
will be blinking. When the protection system preset time preset elapses, the dot will stop blinking and will
be lit permanently, while the compressor will be activated .
6. The delay in turning the compressor on after its activation temperature is reached (user set temperature
minus bottom value of the hysteresis) is equal to 30 seconds. If the temperature drops again during this
time. The condition of exceeding 30 seconds will be verified again. This is designed to protect the
compressor against unnecessary activation due to e.g. articles placement, droughts, etc.
7. After every reaching of the preset temperature (user set temperature minus bottom value of the
hysteresis), as well as following any power failure or voltage drops below 175 volts, the G-202-P00 will
make impossible for the compressor to be activated for the period as specified by the ‘c2’ parameter. If,
however, ‘c2’=0min, the protection time will last 60 seconds following any power failure.
8. Having turned the equipment on using the pushbutton, the 5-second delay will appear in the
compressor activation. This is to cancel the power failure protection from point 7 –this will also pertain to
the time specified by the ‘c2’ parameter, following the compressor’s prior deactivation. This allows faster
compressor operation check.
9. The controller has been equipped with alarm features, providing information regarding sensor’s damage.
Depending on the sensor(s)’ status, the controller performance will be different.

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Damage of the chamber temperature sensor will make the display show the A1 symbol. The
controller will activate the compressor in the time cycle (clock-based control) in accordance with
times specified in ‘c8’ i ‘c9’ parameters. The defrosting process will function as usual.
If the evaporator sensor is damaged, the display will show the A2 symbol. The manual and
automatic defrosting is blocked then!!! The only possibility of defrosting the unit is to press the
pushbutton in order to turn off the unit, and then wait for the ice to thaw.
If two sensors have been damaged, only the A1 symbol will be displayed.
Having repaired the chamber sensor, the A2 symbol will start to be displayed.
10. If the buzzer has been installed in the controller –see p. II, the buzzer will signal any pressing of any button.
If the controller is turned off (two horizontal dashes on the display are seen then), the buzzer will signal
only if the following pushbuttons are pressed, namely: and .
11. The lighting system activation and deactivation will take place after pressing the pushbutton. This will
be signalled by the green LED. If the door opening is reason for lighting system activation, the green LED
will not light up.
The button will operate independently of the thermostat current switch over - .
12. If the ‘d6’ is set to a value lower than 40 ºC, the controller shuts down the fan when the evaporator
temperature is higher than the ‘d6’ parameter value. This function is not available in the defrosting mode.
B - Defrosting
1. If the necessity for the additional defrosting occurs, due to difficult operating conditions, press the
pushbutton. This will make the green LED light constantly on the pushbutton, while the „dF” symbol will
appear on the display, rather than temperature measurement symbol, and this is where the unit will enter
the defrosting cycle.
2. If the defrosting occurs, and the temperature on the evaporator is higher than set in the ‘d2’ parameter, the
unit, after some 10 seconds, will enter the defrosting exiting mode, to resume the operation when the said
mode terminates.
3. If the defrosting occurs, and the temperature on the evaporator is lower than set in the ‘d2’ parameter, the
G-202-P00 will activate the defrosting process, and after reaching the temperature as specified in the ‘d2’
parameter, the unit will enter the defrosting exiting mode (this status is signalled by the green LED, which
blinks on the pushbutton). The heaters version will then enter the defrosting exiting mode, comprising
two consecutive Phases:
Thawing Phase –where the compressor and fans are turned off for the period as specified by the‘c3’
parameter;
Evaporator Freezing Phase –where only the compressor is operated, in order to lower the temperature
of the evaporator to the temperature as specified by the ‘d5’ parameter, prior to reactivating the fans.
The maximal freezing time can not be exceeded, regardless of whether the evaporator has achieved the
temperature of ‘d5’, specified by the ‘c4’ parameter.

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4. The procedure of exiting the defrosting mode is terminated with the activation of fans, turning off the „dF”
symbol on the display and turning off the green LED blinking on the pushbutton .
5. Should the fans be absent or not connected to the S.C.C.B. system, the unit will act as if they are installed.
6. The defrosting process will be terminated following the achieving of the evaporator temperature as preset in
the ‘d2’ parameters, or if the time preset by the ‘c1’ parameter has been exceeded.
7. Having turned off the „dF” symbol and terminated the defrosting process, the display will show the
temperature as stored right before the defrosting commencement, for the period of time as specified by the
‘c7’ parameter – this is intended for preventing claims with respect to “violent temperature fluctuations in
the unit”.
8. The unit performance is the same as in the case of manual and automatic defrosting.
9. The ‘r0’ parameter enables an override to turn the fan on during defrosting.
10. During defrosting there is no fan control based on the ‘d6’ parameter.
C –The Door Opening Sensor Operation Principle
1. If the door has been opened, the fan will be stopped immediately. In addition to the above, depending on
the ‘r7’ parameter setting, the light may be turned on in the G-202-P00 unit. The display shows the
temperature.
2. If the door has not been closed, after 30 seconds, the “dr” symbol will be constantly lit on the display. If
the buzzer is installed in the controller, the short lasting sound signal will be repeated every 30 seconds.
3. If the door continues to be open after the time as specified in the ‘r8’ parameter, the alarm will be
activated, which will be signalled by the display blinking with “dr” symbol, and with the sound signal if the
buzzer is installed. This is when the compressor will be turned off.
4. If the R8 = 0 the alarm will be activated immediately after opening the door.
5. The alarm may be silenced through pressing any pushbutton. Closing the door deactivates the alarm and
normal operation is resumed.
6. The controller allows connecting both the door opening mechanical sensor (R6=01), and the mechanical or
magnetic sensor, disconnected in the course of door opening (R6=02).
D –Hysteresis
When programming the‘d0’ i ‘d1’ parameters (the minimal and maximal user preset temperature) attention
should be paid to the fact that the ‘d3’ hysteresis value causes additional shifting of the temperature to higher
or lower values with relation to the user preset temperature level.
This is particularly significant with regard to the so-called “plus” equipment which should always be operated at
the temperatures above 0oC.

Page 10 Service Manual for Producers SCCB TYPE G-202-P00
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As the Manufacturer of the refrigeration unit (refrigerated counter) (temperatures above 0oC), we require the
unit to allow the operation within the temperature range that does not exceed the values specified below:
Deactivation min: 2ºC. Activation max: 10ºC
Symmetric hysteresis for ‘d3’ even values
Symmetric hysteresis for ‘d3’ odd values
Example No. 1.
The ‘d3’ hysteresis it set at, for example 2ºC
For this hysteresis value, the parameters should be
set as follows: ‘d0’ at 3ºC and‘d1’ at 9ºC
Example No. 3.
The ‘d3’ hysteresis it set at, for example 3ºC
For this hysteresis value, the parameters should be
set as follows: ‘d0’ at 3ºC and‘d1’ at 8ºC
Example No. 2.
The ‘d3’ hysteresis it set at, for example 4ºC
For this hysteresis value, the parameters should be
set as follows: ‘d0’ at 4ºC and ‘d1’ at 8ºC
Example No. 4.
The ‘d3’ hysteresis it set at, for example 5ºC
For this hysteresis value, the parameters should be
set as follows: ‘d0’ at 4ºC and ‘d1’ at 7ºC
VII. UNIT PARTICULAR COMPONENTS ACTIVATION GRAPHS
A thick line denotes activation, while the dashed one means deactivation of the particular equipment. The
defrosting exiting mode comprises two Phases –see Chapter VI p.B3.
The “Stop” field denotes deactivation, while the “Operation” field denotes the compressor’s activation due to
exceeding the preset temperature, taking account of the “d3’ preset hysteresis value. The heater on the figure
‘1’is intended for heating the tray and/or the water discharge hose from the evaporator. The heater on figure
’5’ is intended only for heating the water discharge hose from the evaporator.
IF ERRONEOUS PARAMETERS ARE SET, THE UNIT WILL FAIL TO OPERATE PROPERLY !!!

Activation Temp.
User Preset Temp.
‘d3’
Deact. Temp.
‘d3’
½‘d3’+0.5ºC
½‘d3’-0.5ºC
½‘d3’
½‘d3’

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The first 6 charts apply to the setting of ‘r0’ = 00 –the fan is on during defrosting, like in the 01
program version.
1. Defrosting through the compressor stop, ‘r1’=01, fans operate only together with the compressor,
‘r2’=00
t=0 (c3 and c4 immaterial)
COMPRESSOR
TRAY HEATER
FAN
Stop Operation DEFROSTING DEFROSTING EXITTING Operat. Stop
2. Defrosting through the heater, ‘r1’=02, fans operate only together with the compressor ‘r2’=00
t=c3 t=c4
COMPRESSOR
HEATER
FAN
Stop Operation DEFROSTING DEFROSTING EXITING Operation Stop
3. Warm vapour defrosting ‘r1’=03, fans operate only together with the compressor ‘r2’=00
t=c3 t=c4
COMPRESSOR
VALVE
FAN
Stop Operation DEFROSTING DEFROSTING EXITING Operation Stop
4. Warm vapour defrosting ‘r1’=03, fans operate permanently after turning on the unit, ‘r2’=01
t=c3 t=c4
COMPRESSOR
VALVE
FAN
Stop Operation DEFROSTING DEFROSTING EXITING Operation Stop
5. Defrosting through the compressor stop ‘r1’=01, fans operate permanently after turning on the unit
‘r2’=01
t=0 (c3 i c4 bez znaczenia)
COMPRESSOR
OUTFL. HEATER
FAN
Stop Operation DEFROSTING DEFROSTING EXITING Operation Stop
6. Defrosting through the heater, ‘r1’=02, fans operate permanently after turning on the unit ‘r2’=01
t=c3 t=c4
COMPRESSOR
HEATER
FAN
Stop Operation DEFROSTING DEFROSTING EXITING Operation Stop

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The following charts apply to the ‘r0’=01 parameter.
7. Defrosting with heater ‘r1’=02, fans run only together with compensator ‘r2’=00, fan on during
defrosting ‘r0’=01
t=c3 t=c4
COMPRESSOR
HEATER
FAN
Stop Operation DEFROSTING DEFROSTING EXITING Operation Stop
8. Defrosting with warm steam ‘r1’=03, fans run all the time after equipment powers on ‘r2’=01, fan on
during defrosting ‘r0’=01
t=c3 t=c4
COMPRESSOR
VALVE
FAN
Stop Operation DEFROSTING DEFROSTING EXITING Operation Stop
9. Defrosting with warm steam ‘r1’=03, fans run only together with compensator ‘r2’=00, fan on during
defrosting ‘r0’=01
t=c3 t=c4
COMPRESSOR
VALVE
FAN
Stop Operation DEFROSTING DEFROSTING EXITING Operation Stop
10. Defrosting with heater ‘r1’=02, fans run all the time after equipment powers on ‘r2’=01, fan on
during defrosting ‘r0’=01
t=c3 t=c4
COMPRESSOR
HEATER
FAN
Stop Operation DEFROSTING DEFROSTING EXITING Operation Stop

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VIII. SYSTEM PARAMETERS PROGRAMMING
Having activated and checked the unit operation (standard settings are factory set), start entering system
parameters to the G-202-P00 unit.
For this purpose, turn off the unit by pressing the pushbutton. Then press the buttons and ,
depress and hold, at the same time press the pushbutton. All the three pushbuttons need to be
depressed and held for at least the period of 3 seconds. If any of these buttons has been released during the
said time, the unit will abandon the programming mode. When the unit has assumed the programming mode,
the LEDs on the and pushbuttons will start to blink, while the display will show the ‘c0’ per one second.
Then, the value of this parameter most recently programmed will be shown. Enter the required settings, using
the pushbuttons, any longer pushbutton holding time causing the data “fast rewinding/forwarding”.
Then press , in order to approve the data entered and start entering the next parameter.
Partial entering of the settings is also possible. If any alteration of the particular setting is not required,
simply press the pushbutton and the G-202-P00 unit will assume the next parameter setting mode.
Note !!!
The refrigeration unit Manufacturer may block access to a portion of or even to all parameters
available from the keyboard, by means of the computer programming unit. If this is the case,
and the alteration of any of the blocked parameters is attempted, the display will show the ‘bL’
symbol for the period of 1 second.
Remarks on SCCB programming.
1. IT IS THE RESPONSIBILITY OF THE MANUFACTURER OF THE REFRIGERATING UNIT AND THE SERVICE
ENGINEER TO ENTER NEW SETTINGS REQUIRED FOR NORMAL FUNCTIONING OF THE UNIT !!!
2. Do the programming carefully, preferably writing down earlier the values of the particular parameters on a
sheet of paper. Remember that any error made when programming some parameters will have very
serious consequences including damage of the product and the refrigerating unit.
3. Having programmed and started the unit check it for proper operation and recheck if the settings of the
system parameters are correct.
4. Transfer of the Service Instructions or any information regarding the mode of programming the SCCB
system parameters to the end user is absolutely not allowed. The end user should receive only and
exclusively a copy of the section XIII of these instructions.

Page 14 Service Manual for Producers SCCB TYPE G-202-P00
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Table 2: Parameters Denotation
Para-
meter
Description
Min
Max
Step
Factory
setting
c0
The defrosting frequency. Note!!! If this parameter is set to “0”only
manual defrosting will be available, while any automatic defrosting will
be unavailable!!! If this parameter is set to”-01”, neither manual nor
automatic defrosting will be available!!!
0
-01
24
1h
6h
c1
Maximal defrosting time if the evaporator has net reached the preset
temperature (d2 parameter) Note!!! If this parameter is set to „-01” no
time limit will be available
10
-01
99
1min
30min
c2
Minimal compressor stopping time
0
15
1min
3min
c3
Evaporator thawing time
0
15
1min
2min
c4
Evaporator freezing time, after which the fans will start to operate
regardless of whether the evaporator has reached the temperature as
set in ‘d5’ setting
1
25
1min
10min
c5
Maximal compressor operation time
0 –denotes the absence of test
0
99
1min
40min
c6
Compressor stopping time following the activation of the protection
system as set by the ‘c5’ parameter
0
99
1min
10min
c7
Time for which the temperature measured directly prior to the
defrosting commencement will be shown after the defrosting
completion (‘c4’ parameter).
0
60
1min
5min
c8
Compressor operation time if controlling sensor has been damaged
1
99
1min
25min
c9
Compressor stopping time if controlling sensor has been damaged
1
60
1min
5min
d0
User set minimal temperature
-40
20
1°C
1°C
d1
User set maximal temperature
d0+1
40
1°C
10°C
d2
Evaporator temperature at which the defrosting terminates
0
40
1°C
5°C
d3
Hysteresis value
1
10
1°C
2°C
d4
Chamber sensor rescaling with relation to actually measured
temperature
-10
10
1°C
0°C
d5
Evaporator temperature at which fans will start their operation after the
defrosting process completion.
-30
10
1°C
-5°C
d6
Evaporator temperature, above which the fan is always on
Setting the parameter to +40°C disables this control.
-40
40
1°C
5°C
r0
Mode of fan operation during defrosting
00- ‘classic’ mode according to the Geco algorithm
01- always on during defrosting
02 - always off during defrosting
00
02
1
00
r1
Evaporator defrosting method, the parameter set as follows:
01 –defrosting through the compressor stop
02 –heater assisted defrosting
03 –warm vapour defrosting (reversed cycle)
01
03
1
02
r2
Evaporator fans operation method, the parameter set as follows:
00 –fans operate only together with the compressor
01 –fans operate permanently after activating the power supply
NOTE!!! This parameter does not affect the cycle and method of
evaporator defrosting
00
01
1
01

SCCB TYPE G-202-P00 Service Manual for Producers Page 15
PPUH „GECO” EDITION I PRINTOUT DATE 2014-03-27
r3
Temperature control method, the parameter set as follows:
00 –normal control
01 –the temperature is controlled in accordance with the evaporator
sensor measurements; the programmed temperature and D0, D1, D2 i
D3 parameters pertain to the evaporator sensor and the chamber
sensor measurements are displayed.
00
01
1
00
r5
Defrosting activation conditions during the unit start.
00 –operation commencement without defrosting
01 –if the power failure has occurred during defrosting, the defrosting
process will be activated
02 –defrosting after each power supply activation.
00
02
1
00
r6
Door opening sensor option.
00 –no door opening sensor present
01 –door opening sensor available, connected when door is open
02 –door opening sensor available, disconnected when door is open
00
02
1
01
r7
Lighting system activation method
01 –only door sensor assisted lighting system control
02 –only pushbutton assisted lighting system control
03 –door sensor and pushbutton assisted lighting system control
01
03
1
03
r8
Time from the door opening to the alarm activation.
The dr” symbol will be displayed 30 seconds after opening of the door. If
the controller has been equipped with a buzzer, a short sound signal is
emitted, repeated every 30 seconds.
When the time as specified by the R8 parameter has elapsed, the alarm
will be activated and signalled through the dr” symbol blinking on the
display, and, if the buzzer is present in the controller, the sound signal
will be emitted. The compressor will be stopped.
0 –denotes the immediate alarm activation
0
20
1min
1min
r9
Place where the door opening sensor is installed:
01 –sensor connected to the module accommodating relays
00 –sensor connected to the control module –Note: A special cable
with a plug should be ordered !!!
00
01
1
01
IX. CHANGES IN THE CONTROL
Software version 02 for controller G-202-P00.
Parameters added: d6 i r0.

Page 16 Service Manual for Producers SCCB TYPE G-202-P00
PPUH „GECO” EDITION I PRINTOUT DATE 2014-03-27
X. PROBLEMS AND THEIR REMOVAL
Failure symptoms
Check
1. The display is off
even if G-202 is
connected to the
power supply
Check:
- if 220V voltage is present on the power supply terminals L and N
- correct connection of the actuator to the control panel
- remove and reinsert the ribbon sockets
- connect another ribbon
2. The compressor
will not start despite
its power-on
signaling
-red LED
Check:
- 220V voltage presence on terminals K and N - If present, then check the
compressor
- if not, then check correct connection of the actuator with the control panel
- connect another ribbon
3. Defrosting heater
does not switch on
Check:
- if there is voltage 230V on clamps as described on the casing of the
controller
- if there is, check the heater
- if not then check the connection of the executive module with a control
panel
- connect another ribbon
4. The light tube does
not go on
- presence of the 230V voltage at the terminals marked in the description
provided on the upper panel of the actuator module
- if it is present, then check a/ starter b/ light tube c/ choke
- if not, then check for correct connections between the actuator module and
the control panel
- replace the ribbon cable
5. Wrong
temperature
indications
Check:
- connections of the sensors to the connectors
- value of the parameter ‘d4’
- correct fastening of the sensor
- condition of the sensor cable –the cable can not show any damages
- carefully the appearance of the external surface of the sensor case for any
signs of mechanical damages.
6. The desired
temperature cannot
be set
Check:
value of the parameter ‘d0’ and ‘d1’ (d0<d1)
7. Blinking of dots on
the display, cannot
be turned off
Check :
- power supply voltage value
- condition of the power supply connectors
- tightening of the power supply connectors
- correct connection of the actuator to the control panel
- connect another ribbon

SCCB TYPE G-202-P00 Service Manual for Producers Page 17
PPUH „GECO” EDITION I PRINTOUT DATE 2014-03-27
8. ‘Abnormal’,
‘strange’ behavior of
the unit.
Check:
- if 230V voltage is present on the power supply terminals L and N
- condition of the power supply connectors
- grounding of the refrigerating unit
- condition of the electrical installation and number of the units connected to
one phase
- if you have the type of thermostat (label with output scheme) designed for
your unit
- if the control panel, actuator or the ribbon plugs have been exposed to water
or any other liquid
- if the control panel, actuator or ribbon plugs are exposed to moisture or
rapid temperature fluctuations
- correct connection of the actuator to the control panel
- connect another ribbon
9. Problems with
defrosting the unit
Check:
- value of the parameter ‘d2’ and ‘c0’, ‘c1’
- value of the parameter ‘c1’. This is the maximum unit defrosting time,
whether the evaporator has reached the programmed temperature of the end
of defrosting, or not (parameter ‘d2’). If this time is too short complete
defrosting of the unit will not be possible
- correct fastening of the sensor to the evaporator lamella.
IT MUST BE FIXED SECURELY AND ADHERE CLOSELY TO THE
LAMELLA!!!
- if the evaporator sensor is fixed in place, where the ice remains for the
longest time, if not, check the temperature on the sensor at the moment,
when the last ice lumps fall off the evaporator. THIS IS THE
TEMPERATURE WHICH SHOULD BE ENTERED AS PARAMETER ‘d2’
10. The unit does not
reach the preset
temperature and
does not ‘refrigerate’
Check:
- the temperature programmed by the user
- value of the individual parameters, and in particular 'c2', 'c5', 'd0', 'd1'
- section 9 - Problems with defrosting the unit. If unit defrosting is not
complete, the unit will not be able to reach the programmed temperature !!!
- the way and place of securing the chamber sensor
- if any side panes have been fitted in the rack or sliding panes in the glass
case
- IF THE UNIT IS LEFT IN THE DRAFT OR IN THE SUN !!!
- if there are no fans or air conditioning units installed on the ceiling or nearby
- if condenser is clean
- temperature in the store (each manufacturer specifies max. working
temperature of the unit)
- gas volume, fans, evaporator heater, hose draining water from the
evaporator
11. Wrong operation
of the door open
sensor
Check:
- ‘r6’ and ‘r7’, ‘r9’ parameter value
- sensor connection correctness
- if the sensor is connected to the actuator then check the connection
between executive module with the control panel
- connect another tape

Page 18 Service Manual for Producers SCCB TYPE G-202-P00
PPUH „GECO” EDITION I PRINTOUT DATE 2014-03-27
XI. RETURNS FOR REPAIR
In case of failure and returning SCCB for repair, it is absolutely required to completely fill in the
replacement application form enclosed at the end of this instructions. We suggest making a
Xerox copy of the form rather than cutting it.
PPUH ‘GECO’ reserves the right to refuse a free repair of the unit, if
there is no form, the form is not filled in completely or the seals are
broken !!!
P.P.U.H. ‘Geco’ Sp. z o. o. is not responsible for loses and damages resulting from
provision of information on the method of making changes in the system data of G-202-
P00 by the producer or its service to the final client, incorrect or non-professional
assembly and for loses caused by defective operation of the appliance.

SCCB TYPE G-202-P00 Service Manual for Producers Page 19
PPUH „GECO” EDITION I PRINTOUT DATE 2014-03-27
XII. METHOD OF CONNECTING DEVICES TO THE CONTROLLER

Page 20 Service Manual for Producers SCCB TYPE G-202-P00
PPUH „GECO” EDITION I PRINTOUT DATE 2014-03-27
XIII. OPERATION OF G-202: FOR USER
1. Having turned the equipment on, the display will show two dots, for the period of one second, and then
the version of the controller program will be displayed as well as dots for the period of one second.
Following the completion of the starting procedure, two horizontal dashes signaling the energizing status
will light up on the central segments of the display. The unit will be activated after pressing the pushbutton
. The display will show the temperature value in the device (temperature readings from the cold
room sensor)
2. Setting of the user temperature of the stabilization in the counter.
To change settings press the button. The LED green diode lights on the button and recently
entered value of the temperature is displayed.
Buttons: are used to set the temperature. Each longer holding of the button causes faster
“changes” of the temperature settings.
After setting desired temperature one should press the button again. After that the green LED
diode on the button will light off, and the G-202 will exit the programming mode and start operating
using a new program.
If the button is not pressed the G-202 will automatically exit the programming mode after 5
seconds from the last button press. The temperature value will not be stored in that case.
3. Turning on/off the lighting system.
The lighting system activation and deactivation will take place after pressing the pushbutton. This will
be signaled by the green LED diode. The button operate independently from the thermostat current
switch .
IMPORTANT !!!
If extra defrosting is necessary due to severe operating conditions then press button . The green LED
will light up on the button, and "dF" will appear on the display instead of the temperature measurement
and the unit will enter the defrosting cycle.
Defrosting will end automatically after the preset time elapses or on reaching the factory preset
temperature.
Carrying out any repairs on one own causes loss of warranty and may bring to en electric
shock and other threat. Therefore all kinds of repairs should be carried out by authorized and
qualified personnel!!!