Siemens KG39EAI43 Operating instructions

Concerning this document................................................................4
1.1 Important information.......................................................................................4
1.1.1 Purpose..............................................................................................4
1.1.2 Target group.......................................................................................4
1.1.3 Other applicable documents ................................................................4
1.2 Explanation of symbols ....................................................................................4
1.2.1 Danger levels......................................................................................4
1.2.2 Hazard symbols ..................................................................................4
1.2.3 Structure of the warnings.....................................................................5
1.2.4 General symbols.................................................................................5
Safety.........................................................................................................6
2.1 Qualification ....................................................................................................6
2.2 General safety instructions...............................................................................6
2.2.1 All domestic appliances.......................................................................6
2.3 Product-specific safety information ...................................................................7
2.3.1 Refrigeration and freezer appliances ....................................................7
2.4 Measures after each repair ..............................................................................7
Design and function.............................................................................8
3.1 Energy label....................................................................................................8
3.1.1 Energy Label: Valid until February 28, 2021..........................................8
3.1.2 The new Energy Label: Valid from March 1, 2021 .................................8
3.2 Cooling zones ...............................................................................................10
3.3 Speed controlled compressor.........................................................................11
3.4 Dryer ............................................................................................................12
3.5 Hinges ..........................................................................................................13
3.5.1 Concealed (cap) hinge ......................................................................13
3.5.2 Flat hinge .........................................................................................13
3.5.3 Cushioned flat hinge .........................................................................13
3.5.4 Sliding (tandem) hinge.......................................................................14
3.5.5 Hinge for flush door (Fat hinge)..........................................................14
3.6 Lokring connections.......................................................................................15
3.7 Winter switch.................................................................................................17
3.8 iService functions ..........................................................................................18
3.8.1 iService overview..............................................................................18
Tools and aids ......................................................................................21
4.1 Refrigeration circuit repair tools........................................................................21
4.2 Water circuit repair tools ..................................................................................23
4.3 Repair support tools and aids ..........................................................................23
4.4 Measuring tools ..............................................................................................25
4.5 Cleaning and care accessories ........................................................................26
Fault Diagnosis ....................................................................................27
Condensation / Humidity / Leakage..................................................................27
Moisture on food or glass plates ......................................................................27
Compressor evaporation tray overflowing .........................................................27
Compressor....................................................................................................27
Compressor too hot.........................................................................................27
No cooling power ............................................................................................28
Protective conductor connection on compressor detached ................................28
Filling pipe on compressor too short .................................................................28
Mechanical damage ........................................................................................29
Stainless steel rusts ........................................................................................29
Stainless steel discoloured ..............................................................................29
Crack at bottom of refrigerator compartment in front of vegetable drawer ...........30
Horizontal stress crack on the back wall above or below the foamed-in evap-
orator .............................................................................................................31
Vertical crack on the back wall originating from the fan......................................32
Cracks in cabinet cover ...................................................................................32
Bitumen mass dissolves ..................................................................................33
Small holes in refrigerator compartemnt cooler innerliner...................................33
Circle stains on glass shelves ..........................................................................34
Refrigeration circuit pipe is pressed..................................................................34
Installation fault...............................................................................................35
Increased power consumption and cooling power affected ................................35
Appliance protruding .......................................................................................35
Front panel hits against body, door does not close............................................35
Front panel brushes against kitchen cabinets ...................................................35
Top cabinet cover brushes against front panel ..................................................35
Screw brushes against cover mask ..................................................................35
Cabinet base softens, appliance lifts up or sinks ...............................................35
Noise .............................................................................................................35
Compressor noise...........................................................................................35
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Flow noise.....................................................................................................35
Clicking sounds .............................................................................................36
Swishing noises.............................................................................................36
Vibration noises.............................................................................................36
Injection noises on the evaporator ..................................................................37
Abnormal noises............................................................................................37
Excessive noise measured by customer using smartphone app .......................38
Odour ...........................................................................................................39
Typical plastic smell.......................................................................................39
Strong smell of food.......................................................................................39
Musty smell in case of prolonged periods being out of operation ......................40
Off-odors coming from the appliance exterior ..................................................40
Result problem ..............................................................................................41
Drinking water tastes stale .............................................................................41
Temperature problem ....................................................................................41
Complete over icing of the evaporator.............................................................41
Icing up / condensation on side panels............................................................42
Build-up of ice at a single point.......................................................................42
Icing up on input of evaporator .......................................................................43
Frost on dryer................................................................................................44
Frost on suction pipe .....................................................................................45
Icing up on no-frost evaporator .......................................................................45
Measuring technology.......................................................................46
6.1 Measuring temperature inside the appliance ...................................................46
6.1.1 Temperature measurement with data logger.......................................46
6.1.2 Temperature measurement without data logger ..................................47
6.2 Nominal temperature graph............................................................................48
6.3 Checking temperature indicator (Sticker "OK") ................................................49
6.4 Measuring energy consumption......................................................................49
Test...........................................................................................................50
7.1 Performing customer service test program ......................................................50
7.2 Tracing leakage in refrigeration circuit.............................................................51
7.3 Checking compressor (quick test)...................................................................52
7.3.1 Checking compressor input current ....................................................52
7.3.2 Checking speed on the inverter module ...............................................52
7.3.3 Checking resistance values of compressor motor windings ...................52
7.4 Checking stop valve ........................................................................................53
7.4.1 Checking stop valve for leaks ..............................................................53
7.4.2 Checking stop valve function...............................................................53
7.4.3 Measuring stop valve power consumption............................................53
7.4.4 Measuring suction pressure ................................................................53
Repair.......................................................................................................54
8.1 Inside Lokring technology ................................................................................54
8.1.1 Hints for Lokring installation ................................................................54
8.1.2 Using Lokring pliers ............................................................................54
8.1.3 Handling Lokring pliers with two pivots.................................................54
8.1.4 Changing Lokring pliers jaw ................................................................55
8.1.5 Selecting correct Lokring.....................................................................55
8.1.6 Using Lokprep ....................................................................................55
8.1.7 Using capillary tube pliers ...................................................................55
8.1.8 Checking dryer capsule ......................................................................56
8.1.9 Installing reducing connector...............................................................56
8.1.10 Connecting capillary tube....................................................................56
8.1.11 Connecting dryer and capillary tube.....................................................56
8.1.12 Connecting aluminium and copper pipes..............................................57
8.1.13 Making one-sided pressed connection .................................................57
8.1.14 Installing NTR connection (Y-pipe) (part 1)...........................................57
8.1.15 Installing NTR connection (Y-pipe) (part 2)...........................................57
8.1.16 Connecting T-piece with Schrader valve ..............................................58
8.1.17 Repairing too short compressor tube ...................................................58
8.2 Rinsing refrigeration circuit ..............................................................................59
8.3 Repairing refrigeration circuit (R600a) ..............................................................60
8.3.1 Replacing dryer and compressor .........................................................60
8.3.2 Disposing compressor oil ....................................................................61
8.3.3 Preparing refrigerant (R600a)..............................................................61
8.3.4 Evacuating refrigeration circuit (R600a) ...............................................61
8.3.5 Filling refrigeration circuit (R600a) .......................................................63
8.4 Repairing refrigeration circuit (R134a) ..............................................................64
8.4.1 Replacing dryer and compressor .........................................................64
8.4.2 Disposing compressor oil ....................................................................65
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8.4.3 Filling the filler cylinder (R134a) .........................................................65
8.4.4 Evacuating refrigeration circuit (R134a)..............................................66
8.4.5 Filling refrigeration circuit (R134a)......................................................67
8.5 Sanitising the water system............................................................................68
8.6 Sticking brand logo ........................................................................................69
Customer advice .................................................................................71
9.1 Reducing energy consumption .......................................................................71
9.1.1 Room conditions ...............................................................................71
9.1.2 Compartment temperatures ...............................................................71
9.1.3 Door opening times ...........................................................................71
9.1.4 Food storage ....................................................................................72
9.1.5 Defrosting.........................................................................................72
9.2 Transporting the appliance.............................................................................73
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Concerning this document
1.1 Important information
Read and observe chapter 2 "Safety" before performing any work!
1.1.1 Purpose
These repair instructions form the basis for a systematic and safety conscious proced-
ure for the repair of domestic appliances.
These repair instructions include information about troubleshooting and repair.
1.1.2 Target group
These repair instructions are intended for persons who are familiar with equipment
technology and were instructed by BSH or an authorised body:
¡Service technicians for the repair of domestic appliances
¡Pre-assemblers in the spare part stockroom when determining required spare
parts
¡Call centre employees during order acceptance
1.1.3 Other applicable documents
The following documents include additional relevant repair information:
¡General repair instructions
¡Error codes and service programs
¡Circuit diagrams
¡Exploded drawings
¡Parts lists
¡Repair videos
1.2 Explanation of symbols
1.2.1 Danger levels
The warning levels consist of a symbol and a signal word. The signal word indicates
the severity of the danger.
Warning level Meaning
Danger Non-observance of the warning message
will result in death or serious injuries.
Warning Non-observance of the warning message
could result in death or serious injuries.
Caution Non-observance of the warning message
could result in minor injuries.
Notice Non-observance of the warning message
could result in damage to property.
Table1: Danger levels
1.2.2 Hazard symbols
Hazard symbols are symbolic representations which give an indication of the kind of
danger.
The following hazard symbols are used in this document:
Hazard symbol Meaning
General warning message
Danger from electrical voltage
Risk of explosion
Danger of cuts
Concerning this document
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Hazard symbol Meaning
Danger of crushing
Danger from hot surfaces
Danger from strong magnetic field
Danger from non-ionizing radiation
Table2: Hazard symbols
1.2.3 Structure of the warnings
Warnings in this document have a standardised appearance and a standardised struc-
ture.
Danger
Type and source of danger!
Possible consequences of ignoring the danger / warning.
▶Measures and prohibitions for preventing the danger.
The following example shows a warning that warns against electric shock due to live
parts. The measure for avoiding the danger is mentioned.
Danger
Risk of electric shock due to live parts!
Death by electrocution
▶Disconnect appliances from electrical supply at least 60 seconds
before starting repairs.
1.2.4 General symbols
The following general symbols are used in this document:
Gen. symbol Meaning
Identification of a special tip (text and/or
graphic)
Identification of a simple tip (only text)
Identification of a link to a video tutorial
Identification of required tools
Identification of required preconditions
Identification of a condition (if ..., then ...)
Identification of a result
Start Identification of a key or button
[00123456] Identification of a material number
Status Identification of displayed text / window
(in the appliance's display)
Table3: General symbols
Concerning this document
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Safety
2.1 Qualification
In Germany, only qualified electricians trained by BSH or an authorised body may per-
form any repair work.
In other countries, only similarly trained qualified personnel is permitted to perform the
repair work.
Appliances must only be repaired by persons that are qualified, approved and trained
by BSH or an authorised body as instructed.
2.2 General safety instructions
2.2.1 All domestic appliances
Risk of electric shock due to live parts!
¡Disconnect the appliance from the mains for at least 60 seconds before starting
work.
¡Do not touch the housing, components and cables.
¡For tests on an energised system, use a residual current circuit breaker.
¡Discharge high-voltage capacitors.
Risk of injury from sharp edges!
¡Wear protective gloves.
Risk of crushing during repair, maintenance, troubleshooting and service due to
heavy and moving components
¡Wear protective shoes.
¡Secure heavy components from falling down.
¡Do not stick body parts into moving components.
Risk of injury when dealing with harmful substances!
¡Observe the associated safety data sheet!
Risk to the appliance's safety / function!
¡Only use original spare parts.
Risk of damage to electrostatically sensitive components (ESDs)!
¡Before touching ESDs, use an electrostatic protection system (wristband with earth
safe plug).
¡Do not touch connections and conductor paths of the modules.
¡Only transport ESDs in conductive materials or original packaging.
¡Keep ESDs clear of electrostatically chargeable materials (i.e. plastic).
Safety
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2.3 Product-specific safety information
2.3.1 Refrigeration and freezer appliances
Risk of burns caused by refrigerants!
¡Wear protective gloves and goggles.
Explosion hazard due to refrigerants!
¡Do not solder pipe connections, only use Lokring connections.
¡Do not press any electrical switches.Do not press any electrical switches.
¡Keep clear of thermal appliances.
¡Extinguish / keep clear of open flames.
¡Ensure that room is well ventilated.
2.4 Measures after each repair
If the appliance is functional:
¡Check according to VDE 0701 or country-specific regulations.
¡Check external appearance, function and tightness.
¡Document repair work, measured values and functional reliability.
If the appliance is not functional:
¡Identify the appliance as “not functionally reliable”.
¡Warn customers of commissioning and notify them in writing .
Safety
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Design and function
3.1 Energy label
Since 1995, the European energy label has been providing standardized information on
the energy and water consumption of home appliances.
3.1.1 Energy Label: Valid until February 28, 2021
The energy label, which has had the layout depicted below since 2012, specifies the ef-
ficiency class of the relevant appliance. It also uses language-neutral pictograms to
provide additional information on the appliance, such as its noise value and capacity as
well as energy and water consumption.
In addition to the total usable volume of all freezer and refrigerator compartments, the
label specifies the appliance’s noise value. The energy efficiency class is particularly
important for these appliances. The better the energy efficiency class, the more energy
costs can be saved - especially since these devices are in continuous operation.
Fig.1: Sample energy label for fridge and freezer appliances: Valid until February 28,
2021
1 Energy efficiency class
2 Energy consumption in kWh / year (measured under standard conditions)
3 Total volume of all freezer compartments
4 Noise emissions expressed in dB(A) re 1 PW
5 Total volume of all refrigerator compartments
3.1.2 The new Energy Label: Valid from March 1, 2021
Technological development over the past few years has resulted in a higher concentra-
tion of products that carry labels with a value of A+ or better. Consequently, the label
has not been fulfilling its original function as an aid for making purchasing decisions as
well as it formerly did. Other basic conditions like user behavior have also changed.
That’s why it’s time to adapt the existing energy label.
The procedure for determining the energy class is now more comprehensive. It takes
into account the type of appliance, its operating principle, the room temperature, and
the number and size of storage compartments. The rest of the elements on the new en-
ergy label basically remain the same. Energy consumption continues to be specified in
kWh as annual consumption (“annum”). The label also provides information on the total
volume of all refrigerator compartments and all freezer compartments, if any, and on
noise emissions and the noise emission class.
The most significant change in the new energy labels is the elimination of the energy
efficiency plus classes like, for example A+++. In the future, classification will be from A
to G. New methods will also be used for measuring energy consumption and determin-
ing the label class.
Design and function
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Fig.2: Sample energy label for fridge and freezer appliances: Valid from March 1, 2021
1 QR code
2 Energy efficiency class
3 Energy consumption in kWh / year (measured under new standard conditions)
4 Total volume of all freezer compartments
5 Total volume of all refrigerator compartments
6 Noise emissions expressed in dB(A) re 1 PW and noise emission class
Design and function
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3.2 Cooling zones
Depending on the type of food, it must be stored in the different cooling zones. De-
pending on the appliance, there are special compartments for fresh food, which in-
crease the storage time of the food.
Compartment Temperature Moisture Food Control
Cooling 2 °C to 11 °C Milk products,
tinned food
Freezing -18 °C and
colder
Frozen food
Chiller 2 °C to 3 °C
colder than
cooling temper-
ature*
50 % Fish, meat None
FreshProtect-
Box (side-by-
side appli-
ances)
Variable setting Variable Manually: tem-
perature
HydroFresh Cooling tem-
perature
Variable setting Fruit, veget-
ables
Manually: mois-
ture
CrisperBox
0 °C - Vita-
fresh (two cli-
mate zones)
near 0 °C 95 % Fruit, veget-
ables
Automatically:
temperature,
moisture
50 % Fish, meat
Vacuum (two
climate zones)
near 0 °C 95 % Fruit, veget-
ables
Automatically:
temperature,
moisture, va-
cuum
50 % Fish, meat
Table4: Different cooling appliance compartments
* - depending on refrigerator compartment temperature setting temperat-
ure below 0 °C is possible in chiller compartment.
Design and function
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3.3 Speed controlled compressor
Fig.3: Speed controlled compressor with control electronics
Speed-controlled compressor adapts to the required cooling power with variable rotary
speed. As a result the compressor works efficiently and saves energy.
Compressor has a 3-phase AC motor with specified rotation direction.
Inverter prevents starting current peaks and creates a high level of torque. In case of
overload on system side, the inverter reduces capacity first of all and thus the rotary
speed, and then switches off the compressor.
In case of low rotary speed - compressor can vibrate, in case of high rotary speed -
high-frequency noises are possible.
There are two different types of speed control:
¡Frequency-controlled - control module sends frequency signal to the inverter,
which controls the compressor speed in accordance with the ratio n [rpm] = f [Hz] x
k.
¡Drop-in - control module sends an On / Off signal to the inverter, which controls
compressor speed in accordance with the power consumption of the compressor.
Design and function
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3.4 Dryer
Dryer is installed in the refrigeration circuit to remove any moisture which may have
entered the circuit. It is filled with strongly hygroscopic granules.
Fig.4: Dryer structure
1 Drying agent
2 Coarse sieve
3 Fine sieve
Foreign objects can be caught in the sieve so that they cannot block the capillary tube.
Dryer must be replaced every time work is done on the refrigeration circuit. It should al-
ways be mounted vertically.
There are three dryers available that can be used for repairs depending on the config-
uration / position of components in appliance machine room.
Fig.5: Dryers released by the product area available for repairs
1 [00093110]
2 [00643484]
3 [00649378]
Design and function
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3.5 Hinges
3.5.1 Concealed (cap) hinge
Fig.6: Concealed (cap) hinge overview
On appliances with cup hinges, the cabinet door is fixed to the appliance door. The
cabinet door must be prepared with drilled recesses to house the hinges. No additional
cabinet hinges are required.
Door equipped with concealed (cap) hinges has opening angle of 90°. Below 20° there
is self-closing effect.
Permissible weight:
¡2 hinges door - 9 kg cabinet weight
¡3 hinges door - 15 kg cabinet weight
¡4 hinges door - 18 kg cabinet weight
3.5.2 Flat hinge
Fig.7: Flat hinge overview
In flat hinge technology the cabinet door is fixed to the appliance door.
Door equipped with flat hinges has opening angle of 115°. Below 20° there is self-clos-
ing effect.
Permissible weight is 45 kg in total for cabinet panel, appliance door and loading of
door compartments.
3.5.3 Cushioned flat hinge
For cushioned flat hinges there is self-closing effect for opening angle below 20°.
Permissible weight is 62.5 kg in total for cabinet panel, appliance door and loading of
door compartments.
Design and function
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3.5.4 Sliding (tandem) hinge
Fig.8: Sliding (Tandem) hinge overview
Connection between cabinet and appliance door is made via sliding rails. Cabinet door
hinges are required.
Cabinet door pulls appliance door along when opening. There is no self-closing effect.
3.5.5 Hinge for flush door (Fat hinge)
Fig.9: Hinge for flush door (Fat hinge) overview
The use of tandem hinge technology calls for a cabinet door hinge. The appliance door
is connected to the door of the kitchen cabinet by means of slide-rails. When the cab-
inet door is opened, the appliance door is opened with it. The appliance door does not
have a self-closing feature.
Design and function
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3.6 Lokring connections
In case of repair on the refrigeration circuit, the cut pipe connections are restored with
the Lokring technology.
Fig.10: Structure of Lokring connection
1 Main sealing area / reduces the tube diameter by 2 %
2 Cylindrical area / reduces the tube diameter by 0.2 %
3 Lokring insertion area / facilitates the initial positioning of the Lokring on the
connecting piece
4 Cooling tube
5 Lokring
6 Tubular concreting piece
Lokring connection consists of two Lokrings (5) and a tubular connecting piece (6) for
supporting the pipe ends. With the special inside contour of the Lokring, the connecting
piece is reduced so that a hermetically sealing metal-to-metal connection is created.
There are suitable Lokring connections for all pipe dimensions.
Fig.11: Types of Lokrings
1 T-piece with Schrader valve / used if the compressor is not replaced but the
service nozzle is too short
2 NTR connection / used for repairing the point at which the capillary tube is in-
serted into the intake tube (Y-joint)
3 Reducing connection / used to connect tubes of different sections, available
along with a number of Lokring connections for special applications
4 Stopper (sealing cap) / used to block off a compressor connection prior to trans-
portation
5 NAV connection (extension) / used to extend compressor connection if it is too
short
6 Straight connections from 1.6 mm through to 13.0 mm / used for tubes of the
same diameter, aluminum or brass
In the case of connections between different metals, an electrical po-
tential is created under the influence of moisture, and this can lead to
contact corrosion in the connection.
To prevent this corrosion, an aluminium connection should be used
when making a connection in an aluminium tube. Brass is used for all
other connections. Even the connection between a steel tube and a cop-
per tube is made by means of a brass connection.
Design and function
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In spite of the high degree of sealing efficiency of Lokring connection, it is not always
possible to compensate for existing damage to the tube ends. To provide additional se-
curity in this case, use is made of Lokprep. Lokprep is an inorganic liquid similar to su-
perglue. However it is not used for its adhesive effect but for its characteristic of
hardening without the need for solvents to evaporate.
Fig.12: Applying Lokprep
The exclusion of oxygen is the necessary precondition to allow Lokprep to harden.
Enough Lokprep should be applied to the tube ends to allow a thin film to be spread
over the length of the tube which is then inserted into the Lokring connection. Tube
ends should be pushed fully home into the Lokring connection. For improved distribu-
tion of the Lokprep connection should be turned through 360°.
Design and function
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3.7 Winter switch
For ambient temperatures of 0 °C to 17 °C, heat input in the refrigerator compartment
decreases and compressor runtime is reduced.
As a result, the temperature in the freezer compartment can rise and defrost the
freezer compartment. Winter switch prevents this and maintains a temperature of -18
°C in the unregulated freezer compartment.
Winter switch heats the refrigerator compartment and thus makes sure the compressor
switches on early.
Winter switch can be actuated manually via a switch or automatically.
There are two options for warming up:
¡Interior lighting of the appliance,
¡Foamed refrigerator compartment heater.
Fig.13: Winter switch heaters
With an automatic winter switch, the heater is on permanently when the ambient tem-
perature is below 17 °C. When the ambient temperature is between 17 °C and 21 °C
the heater is activated in the off period of the compressor cycle.
Design and function
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3.8 iService functions
iService is a software tool designed for the after sales service, supporting the repair of
home appliances. The software can establish wired or wireless connection to the appli-
ance and provides one or more of the following functionalities, depending on what has
been supplied for the individual appliance The software only works, if the compatible
hardware is connected to the computer and the driver software for the hardware is in-
stalled.
Overview of iService functions (available depending on appliance):
¡monitoring of internal components and sensors
¡remote control of internal components and test programs
¡read out of internal statistics and failure memory
¡writing configuration codes to the internal memory of the appliance
¡flashing / re-flashing / updating one or more modules of the appliance, using rom-
boot-loader
¡hardware-measurements: typical multi-meter applications and safety tests accord-
ing to EN0701
In the next sub-chapters there are described some of the functions of iService with re-
frigeration appliances specifics. Three zones fridge-freer is taken as an example.
3.8.1 iService overview
3.8.1.1 Monitoring and control function
Fig.14: iService monitoring - window overview
1 0 °C compartment evaporator heater
2 Refrigerator compartment LED light
3 Refrigerator compartment temperature in °C
4 Ambient temperature in °C
5 Refrigerator compartment door state
6 0 °C compartment temperature in °C
7 0 °C compartment evaporator temperature in °C
8 0 °C compartment fan
9 Freezer compartment temperature in °C
Design and function
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10 Freezer compartment evaporator temperature in °C
11 Freezer compartment fan
12 Control mode off button
13 Freezer compartment evaporator heater
14 Solenoid valve
15 Stop valve
16 Compressor speed display in RPM
All LEDs in the refrigerator compartment are considered as on "logical"
LED (1).
Important Information for control function:
¡Only the following components can be controlled during Control Mode: 1, 2, 8, 11,
13, 15, 16
¡Picture will only update after clicking a control element (e.g. light on / off)
¡Only one component can be controlled at a time due to safety reasons
¡Compressor (16) control will activate Refrigerator Cooling. Freezer cooling will be
supported with next iService update. Compressor RPM will not update.
¡To leave control Mode, click the “Black/White Wrench Picture” (12)
3.8.1.2 Memory function
Fig.15: iService memory - window overview
Counter Description
daycounter (x/30) Number of days since last short term re-
set
freezer door alarm Number of freezer door alarm occur-
rences
refrigerator door alarm Number of refrigerator door alarm occur-
rences
freezer temperature alarm Number of freezer temperature alarms
freezer door openings Number of freezer door openings
refrigerator door openings Number of refrigerator door openings
Design and function
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Counter Description
power off / restart Number of restarts
undervoltage Number of undervoltages
defrost cycles Number of defrost cycles
super mode activations Number of super mode activations
setpoint changes Number of setpoint changes
fridge undercooling Number of undercoolings for the refriger-
ator compartment
vitafresh undercooling Number of undercoolings for 0 °C com-
partment
Short Term Counter will reset every 30 days.
Long Term Counter maybe need to be calculated.
Design and function
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