Fault Codes / York / 8

York 8

Critical

YCAS / YVAA — Pre-charge low DC bus voltage (unit).

York 8: Pre-charge low DC bus voltage (unit). This fault typically halts operation and needs immediate attention.

Possible causes

Line voltage too low or pre-charge circuit faulty.

Check steps

Check line voltage and the VSD's pre-charge circuit.

Affected parts

VSD-Vorladeschaltkreis

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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