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Fehlercode: P4
Grund: Sicherheitsabschaltung Inverterregelung. Systeminterne Überwachung angesprochen (z.B.
Kommunikationsproblem zwischen Platine und Kompressor
, Drehzahl Kompressor nicht in
Ordnung)
Ursache:
n Fehlerhafte elektrische V
erbindungen
n Inverterregelung auf Platine defekt
n Verflüssigerventilatormotor defekt
n Kompressor defekt
n Steuerplatine defekt
Überprüfen Sie die elektrische Verbindung zwi-
schen der Steuerplatine und dem Kompressor
.
Sind diese korrekt ausgeführt?
JA
Stellen Sie eine korrekte Verbindung her.
NEIN
Überprüfen Sie die Inverterregelung. Ist diese
funktionstüchtig?
NEIN
Tauschen Sie die Steuerplatine aus.
JA
Überprüfen Sie den Verflüssigerventilatormotor.
Ist dieser in Ordnung?
NEIN
Folgen Sie den Anweisungen aus Troubleshoo-
ting Fehler F5
JA
Überprüfen Sie die Wicklungswiderstände des
Kompressors. Sind diese in Ordnung?
NEIN
Tauschen Sie den Kompressor aus
JA
Tauschen Sie die Steuerplatine des Außenteils.
Einzelne Komponenten prüfen
Überprüfung der Temperatursensoren
Klemmen Sie den T
emperatursensor von der Steu-
erplatine ab, messen Sie den Widerstand an den
Kontakten des Steckers.
Abb. 44: Temperatursensoren prüfen
1: Multimeter
51
51


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