Fault Codes / York / 12

York 12

Critical

YCAS / YVAA — DC bus voltage imbalance (unit).

York 12: DC bus voltage imbalance (unit). This fault typically halts operation and needs immediate attention.

Possible causes

Line voltage phase imbalance or capacitor bank unbalanced.

Check steps

Check line voltage phases and the VSD's capacitor bank.

Affected parts

VSD-Kondensatorbank

Safety note

Discharge capacitors, isolate power.

Source: York YVAA Style A Installation, Operation & Maintenance Instructions, Table 14 "Operational and Fault/Inhibit Codes" p.114-117 (ManualsLib scan of official manual)

Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.

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