Tips Ontroubleshooting - Technische Alternative ESR 21 Mode D'emploi

Tips on troubleshooting
In general, all of the settings in the menus Par and Men and the terminal should first be
checked if there is a malfunction.
Malfunction, but "realistic" temperature values:
 Check program number.
 Check the switch-on and switch-off thresholds and the set differential temperatures. Have
the thermostat and differential thresholds already been reached?
 Were the settings in the submenus (Men) changed?
 Can the output be switched on and off in manual mode? If an endurance run and stand-
still lead to the appropriate reaction at the output, the unit is certainly in order.
 Are all of the sensors connected with the right terminals? Heat up the sensor using a
cigarette lighter and control from the display.
Incorrect display of temperature(s):
 Displayed values such as -999 if a sensor short-circuits or 999 if there is an interruption
do not necessarily mean a material or terminal error. Are the right sensor types (KTY or
PT1000) selected in the menu Men under SENSOR? The factory settings set all inputs
to PT (1000).
 The sensor can also be checked without a measuring instrument by replacing the pre-
sumed defective sensor on the strip terminal with one that works and checking the dis-
play. The resistance measured by an ohmmeter should have the following value depend-
ing on the temperature:
Temp. [°C]
R (Pt1000) [Ω] 1000 1039 1078 1097 1117 1155 1194 1232 1271 1309 1347 1385
R (KTY) [Ω]
The settings of the parameters and menu functions ex works can be restored any
time by pressing the down arrow (enter) while plugging the machine in. The sign that
appears for three seconds on the display is WELOAD for load factory settings.
If the system is not in operation although supply voltage is connected, the 3.15A
quick-blowing fuse that protects the control system and the output should be checked
and exchanged if necessary.
As the programs are constantly being revised and improved, there may be a difference in
the numbering of the sensor, pumps, and program than indicated in old documents. Only the
enclosed manual (identical serial number) applies for the equipment supplied. The program
version for the manual must correspond to the equipment version.
If the control system is found to be malfunctioning despite the checks described above,
please contact your retailer or the manufacturer directly. The cause of the error can only be
determined if the table of settings is completely filled out and, if possible, the hydraulic
diagram of the system in question is provided in addition to the description of the error.
We reserve the right to make technical changes.
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