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F912
OPEN SCR
Otis · DSD 412 Elevator System
Was bedeutet F912 ?
This fault is detected by the PCU Diagnostics function (Function #998) and indicates that one or more SCRs (Silicon Controlled Rectifiers) or doubler packs within the DSD 412 drive are open, meaning they are not conducting current as expected.
Häufige Ursachen
- Failure of an SCR or doubler pack, resulting in an open circuit.
Reparaturschritte & Checkliste
Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.
- 1
Remove power from the drive.
- 2
Consult Section 5, MAINTENANCE, to identify and replace the open SCR(s).
- 3
Repeat the PCU Diagnostics function to confirm the issue is resolved.
Verifizierte technische Daten. Zuletzt aktualisiert: March 2026
Verwandte Fehlercodes
Quelle: Otis DSD 412 Elevator System