TARN 1370, TARN 21370 No. 5311231-01/00 E
Technical Manual
Cold Storage Controller
TARN 1370, TARN 21370
Software Version 211204
No. 5311231-01/00 E
Features
l 3 control relays:
R1: Solenoid Valve, R2: Defrost Heater
R3: Choice of Fan or Alarm
l Programmable Defrost Control by Cycle
Timer & Temperature with Manual Defrost
Override Option
l Programmable Fan Control by Time /
Temperature
l Over-/Under Temperature Alarm
l Operates with TF 201 or TF 501 (Pt1000)sensors
Operating Elements
refrig. ON
Please Note Safety Instructions !
Parameters
All adjustable parameters are assigned a “P” number. See listing on
page 2 for details.
defrost ON
fan ON
alarm
increase
values
Programming /
enter
decrease
values
P
TAR
Calling up and editing
Press "P" key ........... parameter number is displayed
Press 'ñ/ò' ............... select desired parameter
Press "P" again ........ parameter value is displayed
Press 'ñ/ò' ............... adjust parameter value
Press 'P' again ......... new value is stored,
display returns to “P” number.
ELREHA
Access Authorization
Key parameters have an access code requirement to prevent unauthorized changes from being made. All remaining parameters can be
changed without an access code (see PARAMETER Listing on page
2 for parameters requiring code):
decimal point flashes
if night setpoint is active
Auto scrolling
Hold 'ñ/ò'-keys to scroll values automatically.
Manual Defrost
Manual defrost can be initiated while the display shows the actual
value by pushing 'ñ' for more than 3 seconds - to terminate: press
'ò' for more than 3 seconds.
Control Model Number Display
By holding the "P" key for more than 2 seconds, the Control Model
Number will be displayed (137).
Press "P" key ............. parameter number is displayed
Use "ñ/ò" ................. select "P38"
Press "P" again ......... Display will show "00"
Use "ñ" ..................... set value to --88-Press "P" again ......... code is stored
Use "ñ/ò" ................. select desired "P" number to adjust
If no key is pressed within four minutes, the access code will cancel and
authorization access lock will be restored automatically.
ELEKTRONISCHE REGELUNGEN GMBH
page 2
Param.
No.
P01
P02
P03
P04
P05
P06
P07
P08
P09
P10
P11
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
Technical Manual TARN x1370 Cold Storage Controllers
Code Description
no
88
88
88
88
88
88
88
88
88
88
88
88
88
70
Actual temperature control sensor (°C or °F)
Actual temperature evaporator (limit-) sensor
Setpoint
2nd Setpoint (Night-Setpoint)
Start-up of night-setpoint (in 10 minute steps)
Stop of night-setpoint (in 10 minute steps)
Highest adjustable setpoint
Lowest adjustable setpoint
Setpoint hysteresis
Switching mode of cooling (compressor) relay
Cooling relay delay on start-up
Fan trailing temperature
Fan operating mode
Fan restart delay after defrost
Remaining minutes till defrost ends
Remaining minutes till restart of cooling
Remaining minutes till restart of fan
Remaining minutes up to an alarm
Calibration of control sensor
Calibration of evap. sensor / sensor OFF
Sensor type / °C or °F / measuring range
Parameter listing
- Please note that you need a different code for changing
the type of sensor.
- Default values are factory set values.
P22
P23
88
88
Defrost termination temperature in °C or °F
Defrost type (independent from P10)
P24
88
Defrost cycle
P28
P29
P30
88
88
88
Defrost safety operation time
Drain time, refrigeration delay after defrost
Mode of relay #3
Set parameters to factory default:
Switch supply voltage OFF, press and hold the 'P'-key, switch
supply voltage ON. Hold key for about 5 more seconds. While
holding the key, the display shows one by one: software-version,
date and 'def.' ('def' = all parameters are set to default now).
P31
88
Alarm delay
P32
P33
P37
P38
88
88
no
no
Alarm high limit temperature (relative to P03)
Alarm low limit (absolute value)
Manual defrost
Access Code
Range
display only
display only
Lowest (P08)...highest (P07)
± 100 °C (-148...212 °F)
0...235, oFF
0...235, oFF
± 100 °C (-148...212 °F)
-100°C / -148°F up to (P07)
0,3...20,0 K
1= refrigeration, 2= heating
0...59 minutes
-100°C... +100°C (hyst. 3K fixed)
1=, 2=, 3=, see text
0...30 minutes
display only
display only
display only
display only
+/-10,0 K/F
+/-10,0 K/F, oFF
1= TF 501 / °C / -110...+120°C
2= TF 201 / °C / -55...+105°C
3= TF 501 / °F / -166...248°F
4= TF 201 / °F / -67...221°F
5= TF 202 / °C / -55...+105°C
6= TF 202 / °F / -67...221°F
0,0...30,0°C / 118,0°F
1= electric, 2= hot gas,
3= electric+AZV, 4= hot gas+AZV
5= electric+DH, 6= hot gas+DH
7= electric+AZV+DH
8= hot gas+AZV+DH
1...99 hours
1...120 minutes
0...99 minutes
0 = relay is alarm relay, active ON
1 = relay is alarm relay active OFF
2 = like '0', but internal buzzer OFF
3 = like '1', but internal buzer OFF
4 = alarm is resettable
5 = relay is evaporator fan relay
1...99 minutes (if sensor fails always
< 1 minute + flashing display
0...100 K
± 100 °C
"ñ"= Start defrost, "ò"= Terminate
0...99
Default
A
B
0
0
oFF
oFF
+50
-50
2K
1
2
50
1
3
-22
-20
2K
1
2
1
3
0K
0K
2
2
10
1
10
1
4
4
30
0
30
0
5
5
100
-100
100
-100
0
0
Your value
Technical Manual TARN x1370 Cold Storage Controllers
page 3
Functional Description
Display & Sensors
Parameter P21 allows you to choose display in
°C or °F, as well as sensor type and temperature
range. The TARN 1370/21370 will operate with
any of the following sensor types: TF201, TF 202
as well as TF501 (Pt1000), each of which has a
specific temperature range. The display resolution for both sensor inputs is 0.1K (0.2°F).
Note: If only one sensor input is needed, the
2nd input can be disabled.
Temperature alarm
An temperature alarm is indicated by :
• an alarm LED on the front of the control
• a built in audible alarm
• an alarm relay (when R3 is designated as an
alarm relay in Parameter P30).
Parameter (P30) allows you to select the Alarm
Configuration (ex. Alarm relay active/not active, with audible alarm/without audible alarm,
manual reset option active/not active, etc.)
Temperature Control
Parameter (P03) defines the desired temperature, or “setpoint”. The controller compares the
actual room temperature, (P01), with the setpoint, and activates the cooling relay as needed.
This relay can activate a solenoid valve or a
compressor to achieve the desired temperature
as defined in (P03). Parameter (P09) allows the
adjustment of the switching hysteresis (differential) to prevent the system from short cycling. A
pause delay (P11) prevents the compressor from
switching ON again immediately.
If the temperature measured by the control sensor exceeds the range set by parameters (P32/
P33), a delay timer (P31) starts. After this timer
runs down, an alarm will be activated. (P32) (high
limit) is relative to setpoints (P03/P04). (P32) will
adjust proportionally to the setpoints.
Setpoint range
With parameters P07/P08 you can define the
range within which the setpoint can be adjusted.
This prevents unauthorized personnel from making an adjustment outside of the desired operating range.
R1 Control Mode
Parameter P10 defines the operation mode of
R1. Mode 1 = refrigeration, Mode 2 = Heating.
See diagrams below for details.
(P18) displays the remaining time until the alarm
is activated. Once the measured temperature is
restored within operating range, the relay will reset
automatically.
Defrost
The R2 output is used to control a defrost device.
R1 is automatically disabled when a defrost event
is in progress, preventing simultaneous cooling
and defrosting.
Defrost Initiation
l by internal cyclic timer (P24)
l manually (P37).
activated
de-activated
6 = Cyclic Hot Gas Defrost + DH
7 = Heater or Airflow Defrost depending on + DH
8 = Hot Gas Defrost depending on + DH
DH is the 'Display Hold' function (see below)
Manual Defrost
l Parameter P37 enables you to start a defrost
cycle by pressing the "ñ" key, unless the
sensor is already above termination temperature.
or
l When the control is in its default mode, (P01),
and the temperature is on the display, a defrost
event can be manually initiated by pressing the
"ñ" key for more than 2.5 sec.
Defrost Termination
l Thermal termination.
Whenever the evaporator sensor temperature (P02) is higher than the defrost termination temperature (P22), defrosting will be
terminated.
l
Termination by (safety) time.
The time set by parameter P28 is the
maximum time a defrost cycle can last before
it is terminated automatically.
l
Manual termination.
With parameter P37 you can terminate a
defrost cycle by pushing "ò" key.
or
While the actual temperature (P01) can be
read on the display, a defrost cycle can be
terminated by holding "ò" key for more than
2,5 seconds.
l
If the defrost limit sensor is interrupted, the
defrost cycle will be stopped immediately.
hysteresis
Defrost Cycle
setpoint
cold
5 = Cyclic Heater or Airflow Defrost + DH
Parameter (P15) displays the remaining time
until defrost event completion.
Cyclic Timer
P24 defines the time up to the next defrost event,
P28 defines the defrost duration. The cyclic timer
starts running with power-up of the controller, the
first (automatic) defrost events starts first after the
first cycle time is run down.
1= refrigeration
4 = Hot Gas Defrost depending on
Machine Runtime
Same switching characteristic as Mode 2
Defrost
Duration
warm
After the defrost cycle is terminated, cooling is
delayed by parameter (P29). This prevents water
drops from freezing on the evaporator coils.
Parameter (P16) displays the remaining time
before cooling is reinitiated after a defrost event.
ON
2= heating
activated
OFF
Defrost ends
Defrost starts
setpoint
cold
hysteresis
de-activ.
warm
2nd Setpoint Option
The controller is equipped with an option to
reduce energy consumption by establishing a
second setpoint for after hours operation.
Parameter (P04) allows you to select the second
setpoint. Parameters (P05/P06) are used to establish the duration of the second setpoint, which
is activated by an internal time switch. When this
option is activated, the decimal point on the
display will flash.
Machine Runtime
If the added power-on times of a connected
machine (e.g. compressor) exceed the time defined by P24, a defrost cycle starts.
(DH) Display Hold
This function holds the last measured actual
temperature value on the display during a defrost
cycle. After the defrost cycle has been terminated, the 'Display Hold' ends if:
Defrost Modes
With P23 a defrost mode can be selected.
l
1 = Cyclic Heater or Airflow Defrost
Start of defrost cycle switches the defrost
relay ON (i.e heater ON) and switches
cooling OFF.
l
2 = Cyclic Hot Gas Defrost
Start of defrost cycle switches the defrost
relay ON (i.e. bypass-valve open) and switches cooling relay ON (i.e. solenoid valve
open).
3 = Heater or Airflow Defrost depending on
Machine Runtime
Same switching characteristic as Mode 1
measured Actual Value falls below of the
Display Value by 2K
or
a fixed 15 minute timer times out.
In Parameter (P23), modes 5 – 8, allow for the
Display Hold feature.
page 4
Technical Manual TARN x1370 Cold Storage Controllers
Evaporator Fan Control
The fan relay can also be used as an
alarm relay, selectable by (P30) (see
'Temperature alarm').
Parameter (P13) allows you to select from 3
different fan operating modes.
A temporal fan restart delay is active after a
defrost cycle (P14).
A thermostatic delay is always active, that means
the fan starts only if the temperature measured
with the evaporator (limit-) sensor is 3K below the
fan trailing temperature (P12).
If this function is not desired, (P12) can be set to
its upper limit to make it ineffictive.
During drain time (P29) the fan remains off.
Fan Modes (P13)
Practical conditions
1 = Fan runs if compressor output is on.
After defrosting, the fan output is OFF until
the programmed Fan Delay Time, (P14) is
complete.
.
The fan is always run from the n/o contact of the
fan relay.
2 = Fan runs continously, except during defrost
and Fan Delay Time (P14) after defrost.
Thermostatic fan delay: The fan stops if the
temperature measured with the evaporator
sensor exceeds P12. If this function is
not desired, P12 can be set to its upper
limit to make it ineffective.
If you want to instate a thermostatic delay, select
fan mode 2 and adjust setpoint P12.
If you want to instate a thermostatic delay and
airflow defrost, please realize a parallel connection of fan relay and defrost relay.
3 = Fan runs if the compressor output is on, and
during defrost. The temporal fan delay must
be set to "0". This mode can be used for
airflow defrost, no thermostatic delay is valid.
(P17) indicates the remaining time before the fan
starts again.
Switching Characteristic (Overview)
Cooling delay
Defrost event
Fan delay
ON
Cooling
Function
(Relay K1)
Defrost
(Relay K2)
OFF
ON
Temperature
flow in the
evaporator
Fan
Mode
1
OFF
Fan Stop/Go
setpoint
Fan Stop/Go setp. ON
on highest value OFF
Fan Stop/Go setp. ON
active
OFF
ON
Fan
Mode
2
Fan Stop/Go setp.
on highest value OFF
Fan Stop/Go setp. ON
active
OFF
ON
Fan
Mode
3
Fan Stop/Go setp.
on highest value OFF
Fan Stop/Go setp. ON
active
OFF
Technical Data
Supply Voltage TARN 1370 .... 230V AC / 50-60 Hz
TARN 21370 .. 115V AC / 60 Hz
Power Consumption ................. appr. 4 VA
Contact Rating cooling rel. ..... 10A res., 80A (20 msec) / 250V
Contact Rating others ............. 5A res. / 250V
Operating temperature ............. -10...+50°C (14...122°F)
Storage temperature ................ -30...+70°C (-22...158°F)
Relative Humidity ...................... max. 80% r.H., not condensing
Display ..................................... LED,7-segment,red,character height
13mm (.51)
Resolution ................................. 0,1°C / 0,2°F
Accuracy ................................... typ. +/- 1K
Temperature sensors ............... TF 201, TF 202 or TF 501 (Pt1000)
Control-/Display Range
with TF 201, 202 .......... -55...+105°C / -67...221°F
with TF 501 .................. -110...+120°C / -166...248°F
Data storage parameters .......... unlimited
Relay indicators ........................ 3 mm, red
Electrical connection ................ pluggable screw terminals 2,5mm (.1)
Protection .................................. IP 54 from front
Technical Manual TARN x1370 Cold Storage Controllers
CONNECTION & SAFETY INFORMATIONS
Please read before Start-up
l Limit of Application: This product is not designed nor
manufactured for use in equipment or systems that are
intended to be used under such circumstances that may
affect human life.
For applications requiring extremely high reliability, please
contact the manufacturer first
page 5
Installation / Run-Up
Sensor locations
Control Sensor: In the airflow, at the suction side of the evaporator.
Limit Sensor: In the lamella core or the contact pipe of the evaporator,
at the place ice remains the longest time.
lamellacore
Evaporator(Limit-)
sensor
contact pipe
l Electrical installation and putting into service must be
done from authorized personnel.
l Please note the local safety instructions !
l Before installation: Check the limits of the controller and
your application. Before starting up we recommend you to
read the instructions for use, since only by doing so you
can avoid damage or malfunction and you will benefit all
the advantages offered by this product.
l During installation and wiring never work when the
electricity is not cut-off !
l Never operate unit without housing.
l Mounting the controller close to power relays is
unfavourable in case of the electro-magnetic interference.
l Before applying voltage to the controller, make sure that
all wiring has been made in accordance with the wiring
diagram in this manual. Check, if the supply voltage
corresponds to the value printed on the type label.
l Connect ‘PE’ terminals carefully to ground because
otherwise operation of the internal noise filter is disabled.
l Respect the environmental limits for temperature and
humidity. Outside these limits malfunctions may occur.
l Observe the maximum admitted current rate for the relays
(see technical data). Compare with the peak start-up
current of the controlled devices (valve, fan, compressor,
heater..)
l Sensor cables may be up to some hundred meters in
length. Use shielded sensor cable only. Don’t install them
in parallel with high-current cables to prevent inductive
interference. A cross section of min. 0,5mm² is sufficient.
Control
Sensor
Airflow
Applications with Airflow-Defrost
If this defrost method is used, there is no need for a defrost
sensor in the evaporator, so the sensor can be disabled. If
the correction parameter P20 is set to -10,1, the display
shows "oFF" and the sensor is disabled. Correcting the parameter
upward enables the sensor again. In this case, the controller terminates
a defrost cycle only by time which is set with parameter P28. After
power-up, display shows the temperature of the control sensor. After
entering the access code (see chapter "unlock keys") you have to set
the basic configuration of the controller to suit your application:
l kind of temperature sensor and display value (°C/°F)
(P21, Please note: special access code is '70').
All entered temperature setpoints will be set to default.
l switching mode of cooling relay (parameter P10)
l defrost method (P23)
l evaporator fan mode (P13)
l defrost cycle and duration (P24, P28)
l sensor correction if necessary by P19/P20.
The basic setup is now complete and you can edit the missing
setpoints, delay times etc.
l Shielding has to be connected to PE at the end near the
controller
l All used temperature sensors must be identical. Never
use different types mixed. This will not work.
See troubleshooting help on next page
l TF-type sensors are moisture-proof but they are not
designed for being immersed in water for a long period of
time (not pressure-proof). In such a case, always use dipfittings.
Application Example
m a in s
F 1
Typical parameter values for a cold
storage with electric defrost
F 2
P E
L
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
e v a p o r a to r ( lim it)
s e n s o r
N
c o n tro l s e n s o r
C o ld S to r a g e
P03
P07
P08
P09
P10
P11
P12
P13
P14
-20
-15
-25
2
1
2
-2
1
3
P22
P23
P24
P28
P29
P31
P32
P33
14
1
120
30
2
30
7
-35
page 6
Technical Manual TARN x1370 Cold Storage Controllers
Troubleshooting
1. Which controller do you have ?
Hold key 'P' for more than 2 seconds, display shows the type of the
controller unit (138).
2. Do you hold the correct manual ?
problem
3. With parameters P01 and P02 such as P15 to P18 (actual
temperatures and running delays) you get a first survey about the
unit's states.
possible reason
Temperature display:
Actual display flashes with "-110" appr. "-166"
Sensor type TF 501 with "°C" appr. "°F" selected,
Short circuit in wiring or sensor itself
Actual display flashes with "-55" appr. "-67"
Sensor type TF 201 with "°C" appr. "°F" selected,
Short circuit in wiring or sensor itself
Actual display flashes with "120" appr. "248"
Sensor type TF 501 with "°C" appr. "°F" selected,
Wiring or sensor itself broken
Actual display flashes with "105" appr. "221"
Sensor type TF 501 with "°C" appr. "°F" selected,
Wiring or sensor itself broken
Temp. display does not match with actual temperature.
Check if reference thermometer is placed at the same position as the
sensor head. Then correct sensors.
Programming:
Setpoint cannot be adjusted
High and low limit of the setpoint range are identical
Other values cannot be programmed
Enter Access Code.
Display is running. All 3 positions change from 111 to 999
Unit works in selftest mode. Switch power OFF, switch power On again after
15 seconds. Please check sensor corrections now.
You want to set all parameters to default
Switch power OFF and wait 15 seconds. Hold P-key, switch power ON,
unhand P-key. (The display shows first the software-version and then
'deF'. Now all parameter values are lost and are set to default.
Temperature Control:
Room temperature is shown too cold. Cooling is OFF although the room
is too hot or: Cooling switches OFF too early.
Sensor 1 and sensor 2 are interchanged, see also above 'Temp.display'
Cooling is always running, although the room is cold enough and the
indicator LED 1/Cooling is not ON.
Wrong switching mode or N/O / N/C-contact interchanged (cool. relay).
Note: If you change the switching mode, check or select the correct defrost
mode !
Temperature too high, indicator LED '1/Cooling' is ON, but cooling does
not switch ON.
Wrong switching mode or N/O / N/C-contact interchanged (cool. relay).
Note: If you change the switching mode, check or select the correct defrost
mode !
Temperature too high, but cooling does not switch ON.
Check, if a defrost cycle or the drain time is running.
Cooling works, but fan is OFF.
Check, if 'fan stop/go temperature' should work and the evaporator
temperature is below the setpoint. Check if the fan delay is running
You have selected fan mode 3, but the fan does not work during a defrost
cycle.
In this mode the fan delay must be set to '0'. If the evaporator sensor
reaches the fan stop/go setpoint, the fan will be switched OFF during the
defrost cycle. (appr. short defrost and fan relay with external wiring).
You have selected fan mode 2, but fan switches ON and OFF during the
cooling phases.
Adjust fan stop/go temperature to the highest border
You want to use a thermostatic fan delay, but the fan switches always OFF
if cooling switches OFF.
.
Set fan mode to '2', adjust fan stop/go temperature.
Defrost:
Does not work.
Check evaporator sensor position. Check defrost method, -times, -safety time
and -termination temperature. Check if fan delay time is too long. Check if fan
runs correctly in cooling cycles
During a defrost cycle cooling starts.
Defrost mode is set to 'hot gas'. Please set correctly.
Note: If you change the switching mode, check or select the correct defrost
mode !
Failure handling
If the display flashes
with 'minus'-LED:
= sensor short circuit.
without 'minus'-LED:
= sensor interrupted
Another possible opportunity is that the sensor is the wrong type or
out of its specified range.
Control sensor disturbance
If the control sensor fails, all control
functions will be disabled by
de-activating the relay outputs.
Display shows "oFF" if you select parameters P02 or P20 and the
Limitation (Evap.) Sensor is disabled.
Technical Manual TARN x1370 Cold Storage Controllers
page 7
Dimensions / Wiring TARN 1370, TARN 21370
1/
2/
3/
4/
3 (.12)
230V AC
1
2
3
4
P
ELREHA
6
7
ELREHA
F1 F2
9 10 11 12
Snap in fixing frame
from rear side.
Kühlstellenregler
Cold Storage Controller
8
76 (3.0)
5
70 (2.76)
TAR
35 (1.38)
56 (2.2)
28 (1.1)
37 (1.46)
Rückansicht mit Befestigungsrahmen
rear view with mounting frame
Front frame
can be removed
supplied
gasket
75 (2.95)
panel
70 (2.76)
28 (1.1)
Accessories (please order separately or in a kit) :
10
9
8
7
6
5
4
3
2
mounting
1
cut-out
2x Temperature sensors TF 201 or TF 501
EG-Konformitätserklärung
EG-Statement of Conformity
Für das beschriebene Erzeugnis wird hiermit bestätigt, daß bei bestimmungsgemäßem Gebrauch die Anforderungen eingehalten
werden, die in der Richtlinie des Rates zur Angleichung der Rechtsvorschriften der Mitgliedsstaaten über die elektromagnetische
Verträglichkeit (89/336/EWG) und der Niederspannungsrichtlinie (73/23/EWG) sowie der Änderungsrichtlinien (93/68/EWG) festgelegt sind.
Diese Erklärung gilt für alle Exemplare, auf die sich die vorliegende Bedienungsanleitung (die selbst Bestandteil dieser Erklärung ist) bezieht.
We state the following: When operated in accordance with the technical manual, the criteria have been met that are outlined in the guidelines of the
council for alignment of statutory orders of the member states on electro-magnetic consistency (89/336/EWG) and the Low Voltage Directive (73/23/
EWG) as amended by (93/68/EWG). This declaration is valid for those products covered by the technical manual which itself is part of the declaration.
Zur Beurteilung des Erzeugnisses hinsichtlich elektromagnetischer Verträglichkeit und der Niederspannungsrichtlinie wurden jeweils die aktuellen
Ausgaben der betreffenden Grund- und Fachgrundnormen herangezogen.
To meet the requirements, the currently valid versions of the relevant standards have been used.
Diese Erklärung wird verantwortlich vom Hersteller/Importeur
This statement is made from the manufacturer / importer
abgegeben durch:
by:
ELREHA Elektronische Regelungen GmbH
D-68766 Hockenheim
Werner Roemer, Technischer Leiter, Technical Director
(Name / Anschrift / name / adress)
Hockenheim.............21.10.2004.......................................................
Ort/city
Datum/date
Unterschrift/sign
This manual, which is part of the product, has been set up with care and our best knowledge, but mistakes are still possible. If you have any problems, difficulties or questions
please don't hesitate asking our technical support. Technical details can be changed without notice, especially the software. Please note that the described functions are
only valid for units containing the software with the version-number shown on page 1.
Units with an other software number can work a little bit different. You will find this software number on the label of the unit too.
set up 6.3.2005/tkd/jr
checked: 21.3.2005 lhadidi
approved: 21.3.2005/mv/sha
file#: E155131
Shortform Manual for final customers
Controller TARN x 1370
To change the Control Setpoint do the following :
Press key 'P' .......... any parameter number appears
Press keys 'ñ/ò' .... select parameter 'P03'
Press "P" again ...... setpoint value appears
Press keys 'ñ/ò' .... adjust setpoint value
Press 'P' again ....... value is stored, back to parameter no.
Control Model Number Display
By holding the 'P' key for more than 2 seconds, Control
Model Number will be displayed (137).
If no key is pressed within four minutes, the access code will cancel and authorization access lock will
be restored automatically.
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