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Troubleshooting
In general, all of the settings in the menus Par and Men and the terminals should be
checked if there is an error.
Malfunction, but “realistic” temperatures:
Check the program number.
Check the thresholds for on/off and the set differential temperatures. Have the thermostat
and differential thresholds been reached?
Were the settings in the submenus (Men) changed?
Can the output be switched on/off in manual mode? - If endurance runs and standstill at
the output produce an appropriate reaction, the unit is definitely not broken.
Are all of the sensors connected to the right terminals? - Heat the sensor using a lighter
and check the display.
Incorrect temperature displayed:
If a value such as -999 is displayed when a sensor short-circuits or 999 if there is an
interruption, the cause may not be a material or terminal error. Are the correct sensor
types (KTY or PT1000) selected under the menu
Men / SENSOR? The factory settings
have all inputs set to
PT(1000).
The sensor can also be checked without a measuring device simply by changing the part
that is probably defective with one that works at the strip terminal and checking the
display. The resistance measured with an ohmmeter should have the following value
according to the temperature:
Temp. [°C] 0 10 20 25 30 40 50 60 70 80 90 100
R (Pt1000) [Ω] 1000 1039 1078 1097 1117 1155 1194 1232 1271 1309 1347 1385
R (KTY) [Ω] 1630 1772 1922 2000 2080 2245 2417 2597 2785 2980 3182 3392
The settings of the parameters and menu functions ex works can be restored at any
time using the down key (entry) when plugging the unit in. If this occurs, WELOAD will
appear in the display for three seconds.
If in spite of connection to the supply voltage, the device is not working the 3.15A fast-
acting fuse which protects the control and the outputs should be checked or replaced.
As the programs are constantly being revised and improved, there may be a difference in
the numbering of the sensors, pumps, and programs. Only the instruction manual provided
with the device delivered applies (identical serial number). The program version of the
manual must correspond to the one for the device.
If the control system malfunctions despite these checks as described above, please contact
your retailer or the manufacturer directly. The cause of the error can only be determined if the
table of settings has been completely filled in along with a description of the error. If
possible, also include a hydraulic diagram of the system.
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