Geco GC203 Service & Operating Manual

Geco GC203 Service & Operating Manual

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SERVICE OPERATING MANUAL FOR CONTROL BLOCK
GC203
VERSION FOR COOLING APPLIANCES
For software version 01
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.

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Summary of Contents for Geco GC203

  • Page 1 SERVICE OPERATING MANUAL FOR CONTROL BLOCK GC203 VERSION FOR COOLING APPLIANCES For software version 01 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.
  • Page 2: Table Of Contents

    Page 2 Service Manual for Producers SCCB TYPE GC203 Table of contents I. GENERAL CHARACTERISTICS .................. 3 II. METHOD OF MARKING AND TECHNICAL DATA ............3 III. ORDERING METHOD ....................4 DELIVERY, INSTALLATION AND HOOKUP ............. 5 V. THE PRINCIPLE FOR INSTALLATION OF SENSORS, TYPES OF PROTECTIVE CASES ..6 OPERATION METHOD ..................
  • Page 3: General Characteristics

    GC203 stabilizes temperature and controls automatic defrosting mode. Defrosting mode period can be adjusted to specific surrounding parameters. GC203 has also a button user for manual defrosting of an evaporator. The GC203 has also been equipped with lighting system switch (depends on keyboards version) which is operated independently of the main switch.
  • Page 4: Ordering Method

    ORDERING METHOD The following parameters need to be given in the order, namely: Full controller name, e.g. GC203.02 The length of tape connecting the executive module and keyboard panel (standard length is 1m). Temperature sensors lengths(standard length: 3m or 2.5m).
  • Page 5: Delivery, Installation And Hookup

    THE SAME APPLIES WHEN CARRYING OUT ANY OTHER REPAIRS !!! 9. If heaters are used, their power must be fitted correctly, which means that during failure of the GC203 or of the external contactor and switching them on for good, there were no possibility of fire or the device damage.
  • Page 6: The Principle For Installation Of Sensors, Types Of Protective Cases

    Page 6 Service Manual for Producers SCCB TYPE GC203 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. THE PRINCIPLE FOR INSTALLATION OF SENSORS, TYPES OF...
  • Page 7: Operation Method

    To activate the preview, hold the button longer (display will start to blink and evaporator temperature will be displayed). After 5 seconds, the GC203 will automatically return to the reading of the chamber temperature or additional temperature sensor. Warning!!! The preview also works during defrosting, when 'dF' is displayed.
  • Page 8 When is pressed, settings are memorized and normal operation of the controller follows. If GC203 is switched off during programming, it will not memorize the new value of temperature. 4. Signalling of compressor operation When the compressor is on, small red diode (dot) in the right bottom corner of temperature display is on.
  • Page 9: B - Defrosting

    4. If the defrosting occurs, and the temperature on the evaporator is lower than set in the ‘d2’ parameter, the GC203 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 button).
  • Page 10: 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 GC203. The display shows the temperature. If the reason of turning light on is door opening the diode on button is not turned on.
  • Page 11: D - Hysteresis

    ‘d0’ at 4ºC and ‘d1’ at 8ºC set as follows: ‘d0’ at 4ºC and ‘d1’ at 7ºC User Preset Temp. Deact. Temp. ½‘d3’+0.5ºC ½‘d3’ ‘d3’ ‘d3’ ½‘d3’-0.5ºC ½‘d3’ Activation Temp. PPUH „GECO” EDITION I PRINTOUT DATE 2014-04-15...
  • Page 12: Unit Particular Components Activation Graphs

    Page 12 Service Manual for Producers SCCB TYPE GC203 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 B-Defrosting.
  • Page 13 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 Stop Operation DEFROSTING DEFROSTING EXITING Operation Stop PPUH „GECO” EDITION I PRINTOUT DATE 2014-04-15...
  • Page 14: Viii. System Parameters Programming

    Partial entering of the settings is also possible. If any alteration of the particular setting is not required, simply press the pushbutton and the GC203 unit will assume the next parameter setting mode. After entering the last parameter setting and accepting it with the button, it will take place automatic exit from programming mode and return to STANDBY mode (two horizontal dashes on display).
  • Page 15 5°C Setting the parameter to +40°C disables this control. Mode of fan operation during defrosting 00- ‘classic’ mode according to the Geco algorithm 01- always on during defrosting 02 - always off during defrosting Evaporator defrosting method, the parameter set as follows: 01 –...
  • Page 16 Page 16 Service Manual for Producers SCCB TYPE GC203 00 - normal regulation 01 - the temperature is adjusted according to the measurement from the evaporator sensor, the programmed temperature and the parameters d0, d1, d2 and d3 refer to the evaporator sensor, the measurement from the chamber sensor is displayed.
  • Page 17: Problems And Their Removal

    Failure symptoms Check 1. The display is off Check: even if GC203 is - if 220V voltage is present on the power supply terminals L and N connected to the - correct connection of the actuator to the control panel...
  • Page 18 Page 18 Service Manual for Producers SCCB TYPE GC203 8. ‘Abnormal’, Check: ‘strange’ behavior of - if 230V voltage is present on the power supply terminals L and N the unit. - condition of the power supply connectors - grounding of the refrigerating unit...
  • Page 19: Returns For Repair

    !!! 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-203- 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.
  • Page 20: Method Of Connecting Devices To The Controller

    Page 20 Service Manual for Producers SCCB TYPE GC203 METHOD OF CONNECTING DEVICES TO THE CONTROLLER PPUH „GECO” EDITION I PRINTOUT DATE 2018-07-26...
  • Page 21: Information About Marking And Collection Of Used Electrical And Electronic Equipment

    Do not dispose of these products as unsorted municipal waste take them for recycling. The user is responsible for taking used device to recycling point. PPUH „GECO” EDITION I PRINTOUT DATE 2014-04-15...
  • Page 22 Page 22 Service Manual for Producers SCCB TYPE GC203 P.P.U.H. „Geco” Sp. z o. o. Cholerzyn 376 32-060 Liszki, Poland tel. +48 (12) 6369811,6361290 fax. +48 (12) 6362002 e-mail: geco@geco.pl http://www.geco.pl PPUH „GECO” EDITION I PRINTOUT DATE 2018-07-26...

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