KONVEKTA FR4.1 Guide

Konvekta AG
Am Nordbahnhof 5
34613 Schwalmstadt
Germany
Tel.: +49 ( 0 ) 66 91 / 76 – 124
Fax: +49 ( 0 ) 66 91 / 76 - 200
E-Mail: [email protected]om
www.konvekta.com
Instructions for
installation and service
for control unit
FR4.1
12 - 24 Volt DC
ID#: 11002347AA
Version: A00
Vailed from 08/2014

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Contents
Page
1 Technical data of control unit...........................................................................................3
2 General description of the control unit ............................................................................4
2.1 LED-display .........................................................................................................................4
2.2 Programming Menu .............................................................................................................4
2.3 Connecting and Safety instructions......................................................................................5
2.4 Functions of buttons ............................................................................................................6
2.5 Factory setting / delivery state FR4.1...................................................................................6
3 Switching-on the unit ........................................................................................................7
3.1 Switching-on the refrigeration unit by button of FR4.1....................................................7
3.2 Indication and change of setpoint ........................................................................................7
3.3 Sampling of operating hours................................................................................................8
3.4 Sampling of operating hours since last service ...................................................................8
3.5 Sampling of the temperature values of room sensor and evaporator sensor........................8
4 Faults – indications and signals.......................................................................................8
5 Adjustment of Parameters in the menu ...........................................................................9
5.1 Example for change of a parameter, here parameter defrost interval “d.dı” .........................9
5.2 Conversion to cooling with recirculated air defrosting / or replace a FR1, FR2,FR3 or FR4 .9
5.3 Conversion to cooling – heating with hotgas – defrosting with hotgas................................10
6 Control of defrosting.......................................................................................................10
7 Configuration of the parameters with “FR 4 copy-key” ................................................11
8 Logic >> Explanations for the functions of the control conditions..............................12
8.1 Cooling and defrosting with hot gas >> delivery state FR4...........................................12
8.2 Cooling and defrosting with recirculated air >> see changes in parameters point 5.2. .......12
8.3 Neutral zone (cooling + heating with hot gas) and defrosting with hot gas >> see changes
in parameters point 5.3. ....................................................................................................12
9 Connection diagram and parameter chart .....................................................................13
9.1 Connection diagram...........................................................................................................13
9.2 Parameter chart.................................................................................................................13

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1 Technical data of control unit
Type / operating voltage: KONVEKTA part no.:
FR4 / 12 – 24 V H11-002-347
Housing: ............................................... UL 94 V0 plastic material
Dimensions: ......................................... frontal: 78x35 mm; depth: 64 mm
Mounting: ............................................. panel mounting in a 29x71 mm panel cut-out
Frontal protection: ............................... IP65 with sealing
Connections:........................................ Screw terminal block ≤ 2,5mm
2
wiring
Power supply: ............................... 12 – 24 V AC/DC, -10%, +10%
Power consumption: ........................... 3 VA max.
Display:................................................. 3-digit, blue LED, height 12mm
Inputs: ................................................. 2 x PTC-sensor
Relay outputs:
compressor: .................................... Relay NOC (normally open contact) 16 A
defrost: .......................................... Relay change-over contact 8 A
fans: ............................................ Relay NOC (normally open contact) 5 A
Data storage ......................................... non-volatile memory (EEPROM)
Operating temperature: ....................... 0..50°C
Storage temperature:........................... -10..60°C
Humidity: .............................................. 10 to 95% (without condensation)
Measuring range sensor PTC (NTC):.. -50 to 150°C (-50 to 109°C)
Resolution: ........................................... 1°C or 1°F
Accuracy: ............................................. ±0,5%

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2 General description of the control unit
Model FR4.1 is an electronical control unit (78x35mm) suitable for applications on medium or low
temperature refrigeration units, which has three relay outputs to control compressor, defrost and
evaporator blower as well as two PTC-/NTC-sensor-inputs in order to measure the room tempera-
ture and evaporator temperature. Defrosting can be recirculation air as well as hot-gas defrosting.
The blower can be activated during defrosting upon request. The sensor is suitable for refrigera-
tion. The control unit FR4.1 is suitable for refrigeration as well as heating applications (only hot-gas
heating). Supply voltage may be between 10 and 28V.
The following functions can be adjusted:
•room temperature („only refrigeration“ or „refrigeration and heating with hot gas “)
•automatic defrosting (hot gas or recirculating air)
•manual defrosting (hot gas or recirculating air)
⇒Faults are shown in the display via flashing indication (see point 4).
This present instructions for installation and service is amended by the „operating in-
structions for refrigeration units“, KONVEKTA no: BBA-FR4-2AB.
2.1 LED-display
The display shows information about the current control mode via different LED.
The functions are listed as follows:
LED STATUS FUNCTION
illuminated compressor is active
blinking minimum off-duration of compressor is active
illuminated Blowers active
illuminated defrosting active
blinking Manual defrosting active
blinking active fault
2.2 Programming Menu
The programming menu includes all parameters of the unit (Service level!). For this level you
need a password , see example in point 5.1.

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2.3 Connecting and Safety instructions
- Please read before connecting! -
•For safety reasons the control unit FR4.1 shall not be used for applications different from those
described in this manual.
•Before use please check the limits of this control unit as well as its applications.
Safety instructions
Before connecting the unit please check wether the supply voltage is correct. Please pay atten-
tion to the prescribed ambient conditions respectively their humidity and temperature limits.
Should these conditions not be followed, malfunctions can not be excluded.
Attention:
Before switching-on the unit, please check once again correct connection.
Never run this unit without housing.
Please install the sensor where it is not accessible for the end customer
Please consider the maximum current which can be applied to each relay (see technical data /
point 1).
Please ensure that all sensors are installed with enough distance to under-voltage cables. By
this, distorted temperature measurements can be avoided and the unit is protected from voltage
interspersion by the sensor-inputs.
Installation and mounting
The control unit FR4.1 shall be mounted on panel in a 71x29 mm hole and fixed by the fastening
frame.
For a faultless operation the ambient temperature should be between 0 und 50 °C. Please avoid
intense vibration, aggressive gases, high fouling or humidity.
You have to care for enough air circulation at the air slots.
Electrical connections
The control unit FR4.1 is provided with screw terminals for a wire diameter of ≤ 2,5mm
2
. Before
voltage supply is connected please make sure that the auxiliary energy complies with the instru-
ment’s requirements. Please ensure that the inlet cables are installed with enough distance to
under-voltage cables.
Do not exceed the maximum voltage allowed on each relay.
Sensor connections
The sensor peak should be mounted upwards in order to avoid accumulation of liquids or con-
dense water. We recommend to place the thermostat away from air flow in order to have a cor-
rect measurement of the average room temperature.
These instructions contain all necessary information for installation of the control unit. In case you
need further information respectively explanation our technical after-sales service will be at your
disposal (℡06691/76 –124, or [e-mail]).
In the course of further developments we reserve the right to technical modifications without
prenotice. Guarantee and liability conditions of Konvekta AG’s general business conditions are not
enlarged by the above notes. Indications and photos should neither be copied and circulated nor
used for competitor’s purposes. All rights according to the copyright remain expressly reserved.
Manufacturer: KONVEKTA AG, P.O. Box 2280, 34607 Schwalmstadt, Germany

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2.4 Functions of buttons
The control unit FR4.1 has four buttons:
- Scrolls through the positions of
the menu
- raises the values
- switching-on of manual defrosting
- Scrolls through the positions of the
menu
- lowers the values
- sampling of operating-hour counter
- sampling of service-hour counter
- ON / OFF button
- sampling of temperatures at room sensor and evaporator sensor (PR1 – PR2)
- access to setpoint
- access to menus
- confirmation of commands
Setting of temperature setpoint:
Indication of temperature setpoint
Press button [P]. The display shows alternately „SP” and the current adjusted set-
point.
Change of the setpoint:
To change the setpoint you have to press buttonUP] or [D within 15 seconds until
the desired setpoint is indicated. Confirm with [P].
Attention:
The new value will be automatically adopted and stored if it is not confirmed within
15 seconds.
2.5 Factory setting / delivery state FR4.1
Delivery state/factory setting of control unit FR4.1 will be as follows:
Refrigeration with hot-gas defrosting! (see point 7.1. on page 11)
Refer to the Konvekta set values in column „ factory setting.” from the enclosed parameter
list (see point 8 page 12 to 18)!

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3 Switching-on the unit
(Analog to operating instructions no. BBA-FR4-2AB)
3.1 Switching-on the refrigeration unit by button of FR4.1
Press button [U] for 3 seconds. The display shows “Pr2” blinking, afterwards the current room tem-
perature will be indicated.
3.2 Indication and change of setpoint
Press button once, alternately blinking appear „SP“ >> setpoint.
Now you can change the setpoint using the arrow keys (-25 to +30°C)
Now press button once and the new value will be stored.
Attention:
The new value will be automatically adopted and stored if it is not confirmed within 15
seconds.
In refrigeration operation the room temperature is indicated, LED’s for compressor „Comp“ and
fans „F an“ are illuminated.
Drive operation Stand-by operation
•start vehicle engine
(see original operating instructions of the ve-
hicle)
•For units with additional stand-by operation
(230V/400V) you only have to plug in the
power plug for stand-by refrigeration.
Mains operation:
Plug in power plug
compressor
evaporator/conden
sor

11002347AA date of change: 20.08.2014 Page: 8/19
ATTENTION:
The factory setpoint is 1°C.
This setpoint has to be adapted to the storage temperature
of the transport goods!
ATTENTION:
The factory minimal setpoint „S.LS” is adjusted to -25°C.
In case of use as a chilling unit the parameter „S.LS” has to
be adjusted to 0!
3.3 Sampling of operating hours
Switch-on control unit FR4.1 with button .
Press button once. Now the total operating hours of the refrigeration unit will be indicated for
approx. 5 seconds.
3.4 Sampling of operating hours since last service
Switch-on control unit FR4.1 with button .
Press button twice. Now the operating hours of the refrigeration
unit since the last service are indicated for approx. 5 seconds.
3.5 Sampling of the temperature values of room sensor and
evaporator sensor
Press button once; the display shows alternately blinking „Pr 2” and the measured evaporator
temperature. By pressing button once again, „Pr1” is indicated in the display alternately blinking
with the measured room temperature.
After 15 seconds the display switches back to the current room temperature.
4 Faults – indications and signals
The display shows faults by blinking indication.
If there is a fault, no control is possible!
Indication
Description Fault source
”E1” Fault with room sensor Cable rupture or sensor short-circuit
”E2” Fault with evaporator sensor Cable rupture or sensor short-circuit

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5 Adjustment of Parameters in the menu
The single parameters are classified in groups:
a) Group
]
SP (parameter concerning set point)
b) Group
]
In (parameter concerning measuring inlets)
c) Group
]
rE (parameter concerning temperature control)
d) Group
]
dF (parameter concerning defrost process)
e) Group
]
Fn (parameter concerning fans/blowers)
f) Group
]
Pr (parameter concerning switch-on delay / evaporator protection)
You will find the explanations to the single parameters in point 8from page 12.
Access to menu is secured by a password!
5.1 Example for change of a parameter, here parameter defrost interval “d.dı”
For selecting the menu please press and hold button . “SP” is blinking in the display. After 5 sec-
onds a „0“ appears. By pressing buttons and the password „213“ is set. Now press button
once, in order to confirm the password.
The display now shows the term of the first group „
]
SP“. By pressing buttons and the other
groups can be selected, by pressing button the respective group is opened.
In order to change the defrosting intervals please browse with buttons and , until group
„]dF“ appears in the display. By pressing button you open this group. First the display
showsarameter „d.dt“ blinking. By pressing buttons and you can choose paramenter „ d.dı“;
parameter „ d.dı“ is now blinking in the display. By pressing button once, the current setting is
shown, “d.dı” and the adjusted value “1,30” are blinking alternately. Now the value can be
changed. The new value is stored by leaving the parameter with . You can leave the parameter
with button . If you press button longer, the menu switches back to the groups, afterwards
you can leave the menu by pressing this button longer once again.
5.2 Conversion to cooling with recirculated air defrosting / or replace a FR1, FR2, FR3 or FR4
Contrary to the factory setting „cooling with hot-gas defrosting”, the following parameters have to
be changed:
-parameter „ d.dt“ in group „
]
dF“ has to be changed from „in“ to „FdE“
-parameter „ d.td“ in group „
]
dF“ has to be changed from „1“ to „of“
-parameter „ F.Fd“ in group „
]
Fn“ has to be changed from „1“ to „of“
-If no evaporator sensor has been installed (e.g. replace FR1) the parameter „ ı.P2“
in group „
]
In“ has to be changed from „on“ to „of“
If you replace a FR1, FR2 or FR3 with the FR4 and the external ON-OFF-button should be used
furthermore or further instruments such as temperature recorder or heating should be switched on
together with the FR4.1 by an external button, you have to change parameter „ t.UF“ in group „
]
t.S“
from „4“ to „of“.

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5.3 Conversion to cooling – heating with hotgas – defrosting with hotgas
Contrary to the factory setting, the following parameter has to be changed:
-parameter „ r.Fu“ in group „
]
rE“ has to be changed from „C“ to „nr“.
ATTENTION:
Parameter „ r.Fu“ should only be changed from „C“ to „nr“ if a fluid
extractor is installed in the suction pipe of the refrigeration unit!
Otherwise risk of damages to compressor.
6 Control of defrosting
Factory setting of control unit FR4.1 is hot-gas defrosting. In case of use in refrigeration units with
recirculated air defrosting the following parameters have to be changed:
-parameter „d.dt“ in group „
]
dF“ has to be changed from „in“ to „FdE“
-parameter „d.td“ in group „
]
dF“ has to be changed from „1“ to „of“
-parameter „F.Fd“ in group „
]
Fn“ has to be changed from „1“ to „of“
-If no evaporator sensor has been installed (e.g. replace FR1) the parameter „PR 2“
in group „
]
ı.P2 “ has to be changed from „on“ to „of“
 The preadjusted maximum defrosting duration is 15 minutes.
During defrosting process „dEF” is indicated and the LEDs and are
illuminated.
After the end of defrosting there is 1 minute drip-off time. Display shows „ PdF“.
The LEDs and are blinking.
Recommended defrosting intervals:
Fresh meat and cheese: 1:00 hours
Dairy product: 2:00 hours
Deep freezing products: 3:00 hours
Pre-adjustment: 1:30 hours

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7 Configuration of the parameters with “FR 4 copy-key”
FR4 copy-key: Konvekta part no. H11-001-396-C for FR4, FR4.1 and FR4 Pharma
The unit has a plug socket. Via this plug socket the operating parameters are transmitted from and
to the unit. For this the FR4 copy-key with 5-pole plug is used. The FR4 copy-key is used for fac-
tory programming of units that should have the same parameter configuration, or for a backup of
the programming of a unit so that this can be reconstructed quickly if required.
For transmission of a configuration from a FR4 to the FR4 copy-key (UPLOAD), please proceed as
follows:
1) Adjust both dip switches of the FR4 copy-key to OFF.
2) Connect the FR4 copy-key with the FR4; use the designated plug.
3) Make sure that the FR4 copy-key is connected with current supply.
4) Check the LED signal of the FR4 copy-key: In case of green LED, a configuration has already
been loaded; in case of green blinking or red blinking LED there is no valid configuration.
5) Press button on FR4 copy-key.
6) Check the LED signal: After pressing the button, the LED will be red and after successful data
transmission the LED will be green.
7) Now FR4 copy-key can be plugged-off.
If this configuration which has been loaded to the FR4 copy-key should now be transmitted to an-
other FR4 unit (DOWNLOAD), please proceed as follows:
1) Adjust both dip switches of the FR4 copy-key to ON.
2) Connect the FR4 copy-key with the FR4 that should be programmed; use the designated plug.
3) Make sure that the FR4 copy-key is connected with current supply.
4) Check the LED signal of the FR4 copy-key: The LED should be green; if LED is blinking green
or red, no valid configuration has been loaded and it doesn’t make sense to go on.
5) In case of green LED press button on FR4 copy-key.
6) Check the LED signal: After pressing the button, the LED will be red and after successful data
transmission the LED will be green.
7) Now FR4 copy-key can be plugged-off.
SUPPLY ADAPTER
12 VDC AC SUPPLY

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8 Logic >> Explanations for the functions of the control conditions
8.1 Cooling and defrosting with hot gas >> delivery state FR4.1
Cooling:
COMP active (compressor on) FAN active (fan on) DEF inactive (magnetic valve off)
Hot gas defrosting:
COMP active (compressor on) FAN inactive (fan off) DEF active (magnetic valve on)
8.2 Cooling and defrosting with recirculated air >> see changes in parameters point 5.2.
Cooling:
COMP active (compressor on) FAN active (fan on) DEF inactive (magnetic valve on)
Recirculated-air defrosting:
COMP inactive (compressor off) FAN active (fan on) DEF inactive (magnetic valve off)
8.3 Neutral zone (cooling + heating with hot gas) and defrosting with hot gas >> see
changes in parameters point 5.3.
Cooling (valid if SP > HI):
COMP active (compressor on) FAN active (fan on) DEF inactive (magnetic valve off)
Heating (valid if SP < LO):
COMP active (compressor on) FAN active (fan on) DEF active (magnetic valve on)
Neutral zone (ON/OFF at SP):
COMP inactive (compressor off) FAN active (fan on) DEF inactive (magnetic valve
off)
Defrosting with hot gas:
COMP active (compressor on) FAN inactive (fan off) DEF active (magnetic valve on)

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9 Connection diagram and parameter chart
9.1 Connection diagram
9.2 Parameter chart
Group ]SP (parameter of the setpoint)
[refers to Pr1]
Par. Description Range factory
setting
S.SA
Active setpoint 1 ÷ 2 1
SP Setpoint 1 S.LS ÷ S.HS
1.0
SP2 Setpoint 2 S.LS ÷ S.HS
0.0
S.LS
Minimum setpoint -58 ÷ S.HS -25.0
S.HS
Maximum setpoint S.LS ÷ 302 +30.0

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Group ]In (parameter concerning measurement inlets)
Par. Description Range factory
setting
ı.SE Sensor type Pt - nt Pt
ı.C1 Calibration sensor Pr1 (cell) -30 ÷ 30
°C / °F
-1.5
ı.C2 Calibration sensor Pr2 (evaporator) -30 ÷ 30
°C / °F
-1.5
ı.P2 Sensor exists Pr2 (evaporator) on - of on
ı.Un Unit of measurement °C - °F °C
ı.dP Decimal point on – of on
ı.Ft Measurement filter of ÷ 20.0
sec
2.0
ı.dS Variable which is normally indicated in display:
OFF=display off
Pr1=measurement sensor Pr1
Pr2=measurement sensor Pr2
SP= active setpoint
of - P1 - P2 -
SP
P1
Group ]rE (parameter of temperature control)
[refers to Pr1]
Par. Description Range factory
setting
CooL
Cooling
nr
Cooling
Neutral zone
Heating
r.Fu Operating mode outlet OUT (control mode)
H = heating
C = cooling
Nr = neutral zone
H – C – nr C C
nr
r.HI Limit value at high temperature
(relative on SP)
(switching-on „cooling“)
0 ÷ 30
°C/°F
2.0 ---- 2.0
r.LO
Limit value at low temperature
(relative on SP)
(switching-on „heating“)
0 ÷ 30
°C/°F
2.0 ---- 2.0
r.SL Limit temperature switching-on „heat
ing“ depending on
setpoint
(if the setpoint is under the current value r.sl
, then no
„heating“ but „neutral zone“ or „cooling“)
S.LS ÷ S.HS -15 ---- -15
r.d Hysteresis for compressor OUT
Only visible, if control mode is r.Fu = „H“ o. „C“
If control mode is r.Fu = nr, then it is hidden
0 ÷ 30
°C / °F
2.0 2.0 ----
r.t1 On-time outlet OUT with defective sensor Pr1 oF ÷ 99.5
min.sec
oF oF ----
r.t2 Off-time outlet OUT with defective sensor Pr1 oF ÷ 99.5
min.sec
oF oF ----
r.CC
Continuous operation oF ÷ 99.5
hrs.min
oF oF ----
Parameter for realization of control „neutral zone”
only visible, if control mode is r.Fu = nr

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Group ]dF (parameter of defrosting control)
[refers to Pr2]
[defrost cycle „disables“ Pr1]
Par. Description Range
fac-
tory
set-
ting
cooling
hot-
gas
defrost
ing
cooling
recircu-
lated air
defrost-
ing
cooling
neutral
zone
heating
hot-gas
defrost-
ing
cooling
neutral zone
heating
recirculated
air defrost-
ing
d.dt Defrosting mode:
EL = electrical defrost cycle
if defrost cycle is released and starts, then
defrosting (dEF) on / compressor (OUT) off
(compressor can not be activated via Pr1)
ın = defrost cycles by hot air/cycle reversal
if defrost cycle is released and starts, then
defrosting (dEF) on / compressor (OUT) on
FdE = defrost cycle by recirculated air (fans)
if defrost cycle is released and stars, then
defrosting (dEF) off / compressor (OUT) off
fan always on
EL – ın
– FdE
ın ın FdE ın FdE
d.dı Defrost interval
Minimum duration between two defrost cycles (dEF
off)
of = Switching-off the defrosting
oF ÷
99.5
hrs.min
1.30 1.30 1.30 1.30 1.30
d.dE
Maximum duration of a defrost cycle (dEF on)
(duration of defrosting, if not interrupted by Pr2
[d.tE, d.tS])
0.01 ÷
99.5
min.se
c
15.0 15.00 15.00 15.00 15.00
d.tE Defrost limit temperature
(if the temperature Pr2 is higher than the adjuste
d
value d.tE, then dEF will be switched off)
- 58 ÷
302
°C/°F
8.0 8.0 8.0 8.0 8.0
d.tS Defrost switch-on temperature
(temperature Pr2 must fall below d.tS, before d.tE
engages again)
- 58 ÷
302
°C/°F
2.0 2.0 2.0 2.0 2.0
d.dC
Timer mode defrost intervals („timer for d.dı
, dEF
off)
rt = total “unit on“ – time counts
ct = „OUT on“ – time counts
cS = defrost cycle after evaporator off
(dEF on / d.dE-time, consider d.dı = oF)
rt - ct -
cS
rt rt rt rt rt
d.td Compressor delays after defrost cycle (dripping-off)
compressor remains switched-off, LED OUT is
blinking until time d.td is running out.
oF ÷
99.5
min.se
c
1 1 oF 1 oF
d.Sd
Defrost cycle when switching-on on - oF
of of of of of
d.dL
Display lock during defrost cycle
oF = no lock
on = lock on temperature measurement
Lb = lock, in display appears
“dEF” (in defrost cycle, dEF = on)
“PdF” (after defrost cycle, dEF = off, )
on - oF
- Lb
Lb Lb Lb Lb Lb

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d.Et Display unlock difference after finished defrost cycle
During defrost cycle it is possible that the tempera-
ture measured by the cell sensor (Pr1) rises exces-
sively (this depends on the position of the sensor
Pr1 to the evaporator).
In order to not indicate this rise, the functions con-
tained in the parameters “d.dL” (display lock during
defrost cycle) and “d.Et” (display unlock difference
after finished defrost cycle) are used.
The parameter “d.dL” = Lb causes the indication
dEF during a defrost cycle.
Completion of defrost cycle the indication PdF is
suppressed, as the temperature Pr1
is always under
the value [”SP” + “d.Et”].
0 ÷ 30
°C/°F
30.0 30.0 30.0 30.0 30.0
d.di
Temp.
dF
d.di/dSd
off
d.tS
d.tE
ON
A
off
EP
d.di
ON
d.dE
B
(NO defrost)
d.di
off
C
time
Pr2

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Group ]Fn (parameter concerning control of cooling fans)
[refers to Pr2]
Par. Description Ran-
ge
fac-
tory
set-
ting
COOL
cooling
hot-gas
defrost-
ing
COOL
cooling
recircu-
lated air
defrost-
ting
nr
cooling
neutral
zone
heating
hot-gas
defrost-
ing
nr
cooling
neutral zone
heating
recirculated
air defrosting
F.FC Fan state concerning to
control cycle
- temperature Pr2 beyond „fan line“
fans (Fan) always off
- temperature within “fan line”
on = fan always on
of = fan / compressor connected
(compressor on / fan on)
(compressor off / fan off)
on -
oF
on on on on on
F.FE
Fan state concerning to defrost cycle
- temperature Pr2 beyond „fan line“
fan (Fan) always off
- temperature within „fan line“
on = Fn / dF connected
(dEF on / fan on)
(dEF off / fan off)
of = fan (FAn) always off
Only visible if defrosting mode d.dt = „EL“ or „in“
If defrosting mode is d.dt = FdE, then it is hidden
and fan (Fan) always on
on -
oF
oF oF ---- oF ----
F.FL
Top limit temperature fan
(if temperature Pr2 is higher than adjusted value
FLt, then fan is off)
(upper limit „fan line“, consider F.FL > F.LF)
- 58 ÷
302
°C/°F
50.0 50.0 50.0 50.0 50.0
F.LF
Lower limit temperature fan
(if temperature Pr2 is lower than the adjusted va
lue
Fct, then fan is off)
(lower limit „fan line“, consider F.LF < F.FL)
- 58 ÷
302
°C/°F
-50.0
-50.0 -50.0 -50.0 -50.0
F.dF
Switch difference fan lock
(hysteresis for outlet FAn)
0 ÷
30
°C/°F
2.0 2.0 2.0 2.0 2.0
F.Fd
Fan delay after defrost cycle
(switch-on delay outlet Fan after defrosting)
of ÷
99.5
min.s
ec
1 1 of 1 of
F.d F
F.d F
tim e
Fn
off
O N
F.L F
E P
T e m p .
F.F L
off o ff
O N
Pr2

11002347AA date of change: 20.08.2014 Page: 18/19
Group ]Pr (parameter of the compressor protection and switch-on delay)
Par. Description Range factory
setting
P.SC
Compressor protection mode:
1 = switch-on delay
2 = delay after switching-off
3 = delay between switching-on
1 - 2 - 3 2
P.tC Time compressor protection oF ÷ 99.5
min.sec
02.00
P.tL Minimum compressor switch-on duration oF ÷ 99.5
min.sec
oF
P.od
Activation delay of the outlets when switching-on the units oF ÷ 99.5
min.sec
oF
ON
off
P.P2 P.P2 P.P2
SP
Temp.
time
r.d
ON ON
off off
Pr1
Out
(ot)
Group ]Ou (parameter of the configuration of the outlets)
Par. Description Range factory
setting
o.o1 Operating configuration outlet OUT1
Ot = temperature control (compressor)
- Refers to Pr1 [SP, r.HI, r.LO]
dF = defrost instrument
Fn = fans
Au = auxiliary outlet
At = confirmable alarm
(pressing of any button always resets the alarm
AL = standard alarm
An = stored alarm
(alarm remains in the background, also if alarm
does not exist any more, reset with any button only
if alarm condition is not existing any more.
oF = no function
ot/dF/
Fn/Au/At/
AL/An/ -t/ -L/
-n/oF
ot
o.o2 Operating configuration outlet OUT2
dF = defrost instrument
- Refers to Pr2 at “cooling” [d.tE, d.tS]
- Refers to time [d.dı, d.dE]
- Refers to Pr1 at „heating“
{ r.LO --> an / nr --> off / r.HO --> after prog.}
oF/ot/dF/
Fn/Au/At/
AL/An/ -t/ -L/
-n
dF
o.o3 Operating configuration outlet OUT3
Fn = fan
- refers to Pr2 [[F.FL, F.LF]
- F.FC, F.FE
oF/ot/dF/
Fn/Au/At/
AL/An/ -t/ -L/
-n
Fn

11002347AA date of change: 20.08.2014 Page: 19/19
Group ]ts (parameter of keyboard configuration)
Par. Description Range factory
setting
t.Fb Operating mode button DOWN
oF = no function
1 = control auxiliary outlet
2 = manual defrost cycle
3 = activate setpoint
4 = switching-on/-off (stand-by)
indication of
- Operating hours
- Service hours
Example:
Service-hours counter
if 200 was programmed
then 200 x 10 = 2000
oF / 1 / 2 / 3 / 4
0…999 h x 10
0…999 h x 10
oF
t.UF Operating mode button U
4= switching on/-off (stand-by)
oF / 1 / 2 / 3 / 4 4
t.PP Password for access to operating parameter oF ÷ 999 213
t.Sr Service-hours counter
If the programmed value is exceeded, „SEr“
will be
indicated in the display for approx. 5 seconds
This will be indicated with every switching-on of the
FR4, as long as the current value is > than the pro-
grammed value
Example:
if 200 was programmed
then 200 x 10 = 2000
oF ÷ 999 x 10 2000
t.rS Reset service-hours counter
By enter of „password „–181“ (minus 181)“ the ser-
vice-hours counter is reset to „0“.
If you enter the wrong password, the display returns
to normal indication and the current value of the ser-
vice-hours counter is conserved.
REMARK:
The password „-181“ is hard-coded.
-999 ÷ 999 0
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