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CoolMatic Störungen beseitigen
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Bedeutung der roten LED (Abb. 5 2, Seite 5, Abb. 6 2, Seite 5)
Bei Betriebsfehlern leuchtet die LED mehrmals auf. Die Anzahl der Impulse
hängt von der Art des Fehlers ab.
Jedes Aufleuchten dauert jeweils eine Viertelsekunde. lm Anschluss an die
Impulsserie folgt eine Pause. Die Sequenz für den Fehler wird alle vier
Sekunden wiederholt.
Anzahl
Leuchtimpulse
Fehler Mögliche Ursache
1 Versorgungsspannung Die Versorgungsspannung liegt außerhalb des
eingestellten Bereichs.
2 Lüfter-Überstrom Der Lüfter belastet die Elektronikeinheit mit
mehr als 1 A.
3 Motor läuft nicht an Der Rotor sitzt fest.
Der Differenzdruck im Kühlsystem ist zu hoch
(> 5 bar).
4 Zu niedrige Drehzahl Bei zu stark belastetem Kühlsystem lässt sich
die Mindestdrehzahl des Motors von
1850 min
–1
nicht aufrecht erhalten.
5 Übertemperatur der
Elektronikeinheit
Bei zu stark belastetem Kühlsystem oder zu
hoher Temperatur wird die Elektronik zu heiß.
Dauernd NTC-Fehler NTC ist defekt.
31


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