K/KU TN 70/72 K/KU TNV 70/140
K/KU TN 70/72 K/KU TNV 70/140 K/KU TN 70/72 K/KU TNV 70/140
The appliance is fitted with a control panel found on the panel at the top of the door. The panel has been fitted with all the command and control devices required to operate the appliance: � - ON-OFF TELLTALE SWITCH �- FAN SWITCH ( NOT AVAILABLE ON MODELS WITH PLANT TYPE KTN 12 E KTN 13 ). �- LIGHT SWITCH (ONLY FOR GLASS DOOR) �- DEFROST LIGHT �- ELECTRONIC THERMOSTAT 1.0 - TELLTALE SWITCH To turn the appliance on and off. The green light signals that voltage is supplied to the electric plant of the appliance. 2.0 - FAN TELLTALE SWITCH To start or stop the fan inside the unit and to signal its operating status. By switching off the yellow switch the unit will operate by convection. 3.0- LIGHT TELLTALE SWITCH Found only on the K TNV models (with glass door), coloured white. To turn ON and OFF the inside light and signal its status 4.0- DEFROST LIGHT The red light referring to the unit defrost cycle. When ON, it signals that the unit is in the defrost phase. 5.0 - ELECTRONIC THERMOSTAT To regulate the control and management of the operation of the appliance. 5.1 - THERMOREGULATION The electronic thermostat acts to maintain the temperature inside the fridge compartment as close as possible to the Set Point value. Further to the Set Point the regulator uses another parameter - Hysterysis , that is factory set, and determines the range of fluctuation from the Set Point permitted for the fridge compartment temperature Example : with Set Point = -2°C and Hysterysis = 2°C we have : Pag. 18 CONTROL PANEL CONTENTS: 1.0 - ON-OFF TELLTALE SWITCH 2.0 - FAN TELLTALE SWITCH 3.0 - LIGHT TELLTALE SWITCH 4.0 - DEFROST LIGHT 5.0 - ELECTRONIC THERMOSTAT 5.1 - THERMOREGULATION 5.2 - COMPRESSOR TIMING 5.3 - MAXIMUM AND MINIMUM TEMPERATURE ALARMS 5.4 - EVAPORATOR FAN OPERATION MANAGEMENT 5.5 - DEFROST MANAGEMENT 6.0 - SET POINT 6.1 - SET POINT VARIATION 7.0 - OPERATING STATUS OF THE APPLIANCE COMPONENTS 8.0 - ALARM CODE The compressor will start when the compartment temperature rises above : -2°C + ( 2°C ) = 0°C. The compressor stops when the compartment’s temperature reaches: -2 °C The Set Point is available to the user who can set the value, in degrees centigrade, as desired within a factory set range. This range is established to ensure the well being of the appliance and to ensure that the performance is respected. 5.2 - COMPRESSOR TIMING The regulator, in controlling the compressor, accounts for certain timings. These timings have the function of: a) To limit the number of compressor starts per hour to a value established by its constructor. b) To ensure that, between one stop and the subsequent start-up of the compressor, there is a minimum delay to equalise the internal pressures. It is important to emphasise how the timing at point (a) counts the delay between one compressor start-up and the next. The values associated with each timing delay can only be set by parameters that are only accessible to the constructor or an authorised service centre. The compressor timing is signalled by the compressor LED flashing on the face of the thermostat, indicated by "comp" �. 5.3 - MAXIMUM AND MINIMUM TEMPERATURE ALARMS The regulator supervises the management of both the maximum and minimum temperature alarms of the compartment. The values are set by parameters that are only accessible to the constructor or an authorised service centre and should be considered as the distance from the Set Point 5.4 - EVAPORATOR FAN OPERATION MANAGEMENT ( Function not available on models with plant type K TN 12 e K TN 13 ). The regulator functions so that the fans inside the compartment only operate when specifically required. The parameters, only accessible to the constructor or the authorised service centres may be used to define - if the fans shutdown or not during defrost
- the shutdown temperature of the fans. IMPORTANT : The fans will not start if the yellow switch � is OFF. The fans remain off during defrost to avoid putting in circulation warm air heated by the defrost elements until the temperature reading of the sensor fitted on the evaporator fins has risen above the set value. After defrost there must be a delay before the fans start-up to allow the defrost water to drip off. Fan operation is signalled by the yellow telltale switch � lighting up. 5.5 - DEFROST MANAGEMENT The defrost cycle has the function of melting frost or ice which forms on the outside of the evaporator when the air has a high humidity content. The parameters are only accessible to the constructor or authorised service centres and define: - if the defrost is activated on start-up or not - the maximum duration of the defrost cycle - the interval between to subsequent defrost cycles The defrost in act is signalled by the defrost LED lighting up found on the face of the thermostat indicateed by “def” � and by the red light �. In the event that the defrost cycle needs to be started manually, press key � for over 5 seconds. 6.0 - SET POINT 6.1 - HOW TO CHANGE Set Point 6.1.1 - Press the ON-OFF switch 6.1.2 - Press the key SET � (the Set Point is visualised.); The LED indicated by “set” � flashes. 6.1.3 - Adjust the value by pressing the following keys within 5 seconds or (key �) to increase the value (key �) to decrease the value The new setting is memorised automatically when the programming mode is quitted, which occurs when the buttons are not touched for a few seconds. Table 1 LIST OF ACCESSIBLE PARAMETERS appliance All models description Set point unit measure °C factory setting -2 7.0 - OPERATING STATUS OF THE APPLIANCE COMPONENTS The operating status of the various appliance components can be easily checked through the LED’s found on the thermostat. Each LED is associated with a specific component of the appliance. Table 2 gives the corresponding components and meanings. Table 2 MEANINGS OF THE LED’s LED relative components status meaning comp compressor off compressor off comp compressor flashing compressor timing in act comp compressor on compressor in operation def defrost element off defrost inactive def defrost element on defrost in act def defrost element flashing dripping in progress set set point off normal working set set point flashing adjusting parameters 8.0 - ALARM CODES Each anomaly that may occur during operation of the appliance, is signalled by the control module, identified by an alarm code. Table 3 lists all the alarm codes significant for the appliance configuration referred to in this manual. The malfunctions, accompanied by an acoustic signal can be silenced by pressing any of the three keys on the facing. IMPORTANT : When an alarm appears that is not included in this list, this is a symptom of a wrong setting of the configuration parameters of the control module. In this case contact immediately your authorised service centre. Table 3 ALARM CODE LIST code E1 E2 component Temperature sensor Temperature sensor description Fridge temperature sensor failure Evap. temperature sensor failure Pag. 19
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- the shutdown temperature of the fans.<br />
IMPORTANT : The fans will not start if the yellow switch �<br />
is OFF.<br />
The fans remain off during defrost to avoid putting in circulation<br />
warm air heated by the defrost elements until the<br />
temperature reading of the sensor fitted on the evaporator<br />
fins has risen above the set value. After defrost there must<br />
be a delay before the fans start-up to allow the defrost water<br />
to drip off.<br />
Fan operation is signalled by the yellow telltale switch �<br />
lighting up.<br />
5.5 - DEFROST MANAGEMENT<br />
The defrost cycle has the function of melting frost or ice<br />
which forms on the outside of the evaporator when the air<br />
has a high humidity content.<br />
The parameters are only accessible to the constructor or<br />
authorised service centres and define:<br />
- if the defrost is activated on start-up or not<br />
- the maximum duration of the defrost cycle<br />
- the interval between to subsequent defrost cycles<br />
The defrost in act is signalled by the defrost LED lighting up<br />
found on the face of the thermostat indicateed by “def” �<br />
and by the red light �.<br />
In the event that the defrost cycle needs to be started<br />
manually, press key � for over 5 seconds.<br />
6.0 - SET POINT<br />
6.1 - HOW TO CHANGE Set Point<br />
6.1.1 - Press the ON-OFF switch<br />
6.1.2 - Press the key SET � (the Set Point is visualised.);<br />
The LED indicated by “set” � flashes.<br />
6.1.3 - Adjust the value by pressing the following keys within<br />
5 seconds<br />
or<br />
(key �) to increase the value<br />
(key �) to decrease the value<br />
The new setting is memorised automatically when the programming<br />
mode is quitted, which occurs when the buttons<br />
are not touched for a few seconds.<br />
Table 1 LIST OF ACCESSIBLE PARAMETERS<br />
appliance All models<br />
description Set point<br />
unit measure °C<br />
factory setting -2<br />
7.0 - OPERATING STATUS OF THE APPLIANCE COMPONENTS<br />
The operating status of the various appliance components<br />
can be easily checked through the LED’s found on the<br />
thermostat. Each LED is associated with a specific component<br />
of the appliance. Table 2 gives the corresponding<br />
components and meanings.<br />
Table 2 MEANINGS OF THE LED’s<br />
LED relative components status meaning<br />
comp compressor off compressor off<br />
comp compressor flashing compressor timing in act<br />
comp compressor on compressor in operation<br />
def defrost element off defrost inactive<br />
def defrost element on defrost in act<br />
def defrost element flashing dripping in progress<br />
set set point off normal working<br />
set set point flashing adjusting parameters<br />
8.0 - ALARM CODES<br />
Each anomaly that may occur during operation of the appliance,<br />
is signalled by the control module, identified by an<br />
alarm code. Table 3 lists all the alarm codes significant for<br />
the appliance configuration referred to in this manual.<br />
The malfunctions, accompanied by an acoustic signal can<br />
be silenced by pressing any of the three keys on the facing.<br />
IMPORTANT : When an alarm appears that is not included<br />
in this list, this is a symptom of a wrong setting of the<br />
configuration parameters of the control module. In this case<br />
contact immediately your authorised service centre.<br />
Table 3 ALARM CODE LIST<br />
code E1 E2<br />
component Temperature sensor Temperature sensor<br />
description<br />
Fridge temperature<br />
sensor failure<br />
Evap. temperature<br />
sensor failure<br />
Pag. 19
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