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1Meldungen des Universellen-Brenner-Automaten (UBA)
Serviceanleitung Logamax U112(K)/U114(K)/U122(K)/U124(K) • Ausgabe 12/2004 7
Änderungen aufgrund technischer Verbesserungen vorbehalten! W
1.2 Störungsmeldungen
Anzeige Anzeige nach
Drücken der
Servicetaste
Bedeutung Flussdia-
gramm
zur Feh-
lersuche
1
Abgas (nur bei Logamax U124)
L
Abgassensor hat angesprochen Seite 11
3
Luftvolumenstrom (nur bei Logamax U122)
A
Differenzdruckschalter hat während der Heizphase abge-
schaltet
Seite 12
C
Differenzdruckschalter hat nicht in der programmierten Zeit
geschlossen
Seite 13
4
Temperaturen
A
Vorlaufsensor über 100 °C Seite 15
C
F2 Sicherungsfehler oder Sicherheitstemperaturbegrenzer
(STB) hat angesprochen
Seite 16
H
Systemfehler Seite 17
U
Heizwassersensorkurzschluss Seite 18
y
Heizwassersensor defekt oder loser Kontakt Seite 19
5
Kommunikation
C
Logamax U112/114/122/124 hat nach PC- oder Hand-
terminalanschluss abgeschaltet
Seite 20
6
Flammenüberwachung
A
F1 Sicherungsfehler oder keine Ionisationsmeldung nach
der Zündung
Seite 21
C
Ionisationsmeldung trotz nicht vorhandener Flamme Seite 23
L
Flamme ist während der Heizphase ausgefallen Seite 24
7
Netzspannung
A
Unter- oder Überspannung im UBA Seite 25
7


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