Gram Eco Euro KG 60 Service manual

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765041996 Rev. 001 1
Operating- and servicemanual
Eco Midi KG/FG 60/82
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765041996 Rev. 001 2
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Contents
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Operating the product ................................................................................................. 3
Temperature setting .................................................................................................... 4
Keyboard lock ............................................................................................................. 4
Alarms ......................................................................................................................... 5
Error codes on the display .......................................................................................... 6
Defrosting ................................................................................................................... 7
Setting the configuration parameters .......................................................................... 8
Manufacturer’s settings ............................................................................................... 9
Working setpoint and configuration parameters ........................................................ 10
Wiring diagram .......................................................................................................... 15
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765041996 Rev. 001 3
Operating the product
Connect the product to the socket. This is done by mounting the accompanying power cord
first as shown in Fig. 4, and then subsequently connecting the cord to the socket.
To switch the product on and set the desired temperature for the cabinet, the uppermost
panel must be flipped up and held in that position.
NOTE: Note that the panel does not stay up by itself, but rather must be held up when
it is opened.
Fig. 6
When the product has been connected to the power supply, but not switched on yet (in
standby), this is indicated by a small control lamp which is the only one lit in the lower
right corner of the display.
To switch the product on, press for approx. 3 seconds. During start-up, the control
lamp will blink until the product is on.
The display will show the current temperature in the product. This also serves to indicate
that the power supply is connected to the product.
The product is switched off in the same manner as it is switched on. By pressing
for approx. 3 seconds.
To switch on and off both the interior light in the product and the light in the display box,
above the door, use the switch placed immediately to the left of the controls behind the
display box. To gain access to this switch, rotate the display box upwards as shown in Fig.
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765041996 Rev. 001 4
Temperature setting
Set the desired cabinet temperature in the following manner:
It is important to make sure first that the keyboard is not locked. See how in the section
below on keyboard locking.
Press the key. The compressor lamp blinks, and the current cabinet
temperature setting is shown in the display. This indicates that the current temperature
setting can be changed now in the following manner:
Press or to raise or lower, respectively, the temperature setting to the
desired level.
Once the desired cabinet temperature has been set, press the key again to save
the new value. The compressor lamp will go out, unless the compressor is running.
Alternatively, by not touching the keys for a minimum of 15 seconds, the controls will switch
back to the normal temperature display, and the value that has been set will be saved
automatically.
In the event of an interruption to the power supply, the controls will remember the
temperature setting, and the product will start up again when the power comes back.
Keyboard lock
The keyboard is automatically locked when it has not been used/operated for 30 seconds.
This secures the product against unauthorised/inadvertent changes to the settings or
switching off of the controls.
To unlock the keyboard:
Briefly press . If the display subsequently shows Loc then the controls are locked. To
unlock the controls, press any key for approx. 3 seconds, until the display shows UnL. The
display is now unlocked and new settings can be entered.
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765041996 Rev. 001 5
Alarms
The controls can show alarms that are related to the settings for the controls or the
product's operation.
The following alarms can occur:
AH High temperature alarm. This code is shown in the display if the cabinet
temperature is too high in relation to the product's set point. The alarm is
automatically reset when the correct temperature is re-established.
AL Low temperature alarm. This code is shown in the display if the cabinet
temperature is too low in relation to the product's set point. The alarm is
automatically reset when the correct temperature is re-established. (This alarm is
only shown in KG models).
id Door alarm. This code is shown in the display if the door has been open for a
long time. When the door is closed, this alarm is automatically reset.
COH Condenser overheated. This code is shown in the display if the condenser
temperature has been too high. Clean the condenser filter in front of the
condenser. (Refer to the placement of the filter in Fig. 3).
CSd Compressor shut off. This code is shown in the display if the condenser
temperature has been so high that it could damage the compressor. The
compressor shuts off when this error is shown. To restart the system, do the
following:
Clean the condenser filter in front of the condenser. (Refer to the placement of
the filter in Fig. 3). To reset this error, it is necessary to switch the product off and
on again. The error is not reset automatically.
dFd Defrosting alarm. This code is shown in the display if the defrosting has been
interrupted at the maximum time allowed for a defrosting. The product will in all
probability continue to function normally. This is just an indication that the product
is being or has been subjected to a greater load than the defrosting parameter
settings are able to accommodate. This error is acknowledged by touching any
key.

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765041996 Rev. 001 6
Error codes on the display
Pr1 If Pr1 is shown in the display, it means that there is an error on the temperature
sensor in the product, and service assistance should be summoned.
The product will in the meantime attempt to maintain the set temperature.
Pr2 If the display is showing Pr2, there is an error with the evaporator sensor. The
sensor should be replaced as soon as possible. Summon service assistance.
Pr3 If Pr3 is shown in the display, it means that there is an error with the temperature
sensor in the condenser, and service assistance should be summoned.
The product will in the meantime attempt to maintain the set temperature.
Control lamps:
The display contains the following control lamps:
Control lamp for compressor. Lit when the compressor is in operation. Blinks while
the temperature is being set, or if the compressor start has been delayed
(compressor protection).
Control lamp for defrosting. Lit continuously during defrosting. Blinks while draining
after completed defrosting.
Control lamp for evaporator fan. Lit continuously when the evaporator fan is in
operation. Blinks during delay of fan operation.
Control lamp for operation of cabinet heating elements. Lit continuously when cabinet
heating elements are in operation (Frame, glass and drainage heating elements).
This is only for freezers with glass doors (FG models).
Control lamp for compressor operating time. When this control lamp is lit, it means
that the compressor has been running for so many hours that it is time to clean the
condenser's filter, which is located immediately in front of the condenser. (Refer to
the placement of the filter in Fig. 3). When the filter has been cleaned and
remounted, the counter that shows the interval must be reset.
This control lamp is the only one in lit in the display when the product is functioning in
the state termed low consumption. To see further function indicators and the
temperature in the display, it is necessary to press one of the buttons on the controls.
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765041996 Rev. 001 7
Defrosting
KG:
Defrosting is automatically performed 4 times every 24 hours, by circulating the air inside
the cabinet during a forced standstill of the compressor. The defrost LED lights to
indicate the defrosting cycle is running.
FG:
Defrosting is automatically performed 4 times every 24 hours, by a defrost heating element.
Manual defrosting:
If the cabinet is operating under severe load (frequent door opening and frequent
replenishment), manual defrosting can become necessary.
Manual defrosting is performed as follows:
Push for 4 seconds, and defrosting is started. The defrost LED lights to
indicate the defrosting cycle is running.
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Do not use sharp or pointed objects to accelerate the defrosting process.
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765041996 Rev. 001 8
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Setting the configuration parameters
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765041996 Rev. 001 9
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Manufacturer’s settings
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765041996 Rev. 001 10
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Working setpoint and configuration parameters
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PARAM. MIN. MAX. U.M. DEF.
GRAMFG
HAV
GRAMKG
HAV
GRAMFG
FAV
GRAMKG
FAV WORKINGSETPOINT
SP r1 r2 °C/°F(1) 0 ‐18 5 ‐18 5
workingsetpoint;seealsor0andr12
PARAM. MIN. MAX. U.M. DEF.
GRAMFG
HAV
GRAMKG
HAV
GRAMFG
FAV
GRAMKG
FAV ANALOGINPUTS
CA1 ‐25 25 °C/°F(1) 0
0 0 0 0
ifP4=0,1or2,roomprobeoffset
ifP4=3,incomingairprobeoffset
CA2 ‐25 25 °C/°F(1) 0 0 0 0 0
evaporatorprobeoffset
CA3 ‐25 25 °C/°F(1) 0 0 0 0 0
ifP4=1,condenserprobeoffset
ifP4=2,criticaltemperatureprobeoffset
ifP4=3,outgoingairprobeoffset
P0 0 1 ‐‐ 1 1 1 1 1
probetype
0=PTC
1=NTC
P1 0 1 ‐‐ 1 0 0 0 0
degreeCelsiusdecimalpoint(duringnormaloperation)
1=YES
P2 0 1 ‐‐ 0 0 0 0 0
unitofmeasurementfortemperature(2)
0=°C(Celsiusdegree;resolutiondependsonP1parameter)
1=°F(Fahrenheitdegree;resolutionis1°F)
P3 0 2 ‐‐ 1 1 1 1 1
evaporatorprobefunction
0=absentprobe
1=defrostprobeandprobedeterminingtheactivityoftheevaporatorfan
2=probedeterminingtheactivityoftheevaporatorfan
P4 0 3 ‐‐ 0 1 1 0 0
fourthinletfunction
0=multifunctioninput(digitalinput)
1=condenserprobe(analoginput)
2=criticaltemperatureprobe(analoginput)
3=outletairprobe(analoginput)(3)
P5 0 4 ‐‐ 0
0 0 0 0
magnitudedisplayedduringnormaloperation
0=ifP4=0,1or2,roomtemperature
ifP4=3,CPTtemperature
1=workingsetpoint
2=evaporatortemperature
3=ifP4=0,“‐‐‐”
ifP4=1,condensertemperature
ifP4=2,criticaltemperature
ifP4=3,outletairtemperature
4=ifP4=0,1o2,“‐‐‐”
ifP4=3,inletairtemperature
P7 0 100 % 50 50 50 50 50
inflowingairtemperaturepercentageforthecalculationoftheCPTtemperature
P8 0 250 0,1s S 100 100 100 100
delayeddisplayoftemperaturechangesasdetectedbytheprobes
PARAM. MIN. MAX. U.M. DEF.
GRAMFG
HAV
GRAMKG
HAV
GRAMFG
FAV
GRAMKG
FAV MAINREGULATOR
r0 0,1 15 °C/°F(1) 2 4 4 4 4
workingsetpointdifferential;seealsor12
r1 ‐99 r2 °C/°F(1) ‐40 ‐20 2 ‐20 2
minimumworkingsetpoint
r2 r1 99 °C/°F(1) 50 ‐10 12 ‐10 12
maximumworkingsetpoint
r4 0 99 °C/°F(1) 0 0 0 0 0
workingsetpointincreaseduringthe“energysaving"function;seealsoi5,i10andHE2
r5 0 1 ‐‐ 0 0 0 0 0
coolingorheatingoperation(4)
0=cooling
1=heating
r6 0 99 °C/°F(1) 0 0 0 0 0
ifr5=0,workingsetpointdecreaseduringthe“rapidcooling”function(onlyifr8=1);seealsor7
ifr5=1,workingsetpointincreaseduringthe“rapidheating”function(onlyifr8=1);seealsor7
r7 0 240 min 30 0 0 0 0
ifr5=0,“rapidcooling”functionduration(onlyifr8=1);seealsor6
ifr5=1,“rapidheating”functionduration(onlyifr8=1);seealsor6
r8 0 2 ‐‐ 0 0 0 0 0
thisfunctioncanbeenabled/disabledwiththekeyFNCV
0=none
1=ifr5=0,“Rapidcooling”function
ifr5=1,“Rapidheating”function
2=“energysaving”function(onlyifr5=0)
r12 0 1 ‐‐‐ 1 1 1 1 1
workingsetpointdifferentialtype
0=asymmetric
1=symmetric
PARAM. MIN. MAX. U.M. DEF.
GRAMFG
HAV
GRAMKG
HAV
GRAMFG
FAV
GRAMKG
FAV COMPRESSORPROTECTIONSYSTEM
C0 0 240 min 0 0 0 0 0
delayinswitchingonofcompressorafterthedeviceswitcheson(5)
C2 0 240 min 3 3 3 3 3
minimumcompressorswitch‐offduration(6)
C3 0 240 s 0 180 180 180 180
minimumdurationofcompressorswitchontime