Fujitsu 69.1

High

Airstage V-II — Outdoor unit communication PCB parallel communication error (Error code 69.1).

Fujitsu 69.1: Outdoor unit communication PCB parallel communication error (Error code 69.1). This fault noticeably affects operation.

Possible causes

Power supply defective.
Outdoor unit address/number-of-units setting mistake.
Communication line between outdoor units defective.

Check steps

Check power supply (cable, on/off).
Check address/number-of-units setting.
Check communication wiring; replace main PCB if unresolved.

Affected parts

Kommunikationskabel
Hauptplatine

Safety note

Isolate power before testing.

Source: Fujitsu Airstage V-II VRF Service Manual, "Error Code List For Outdoor Unit" p.65 + "Trouble Shooting With Error Code (Outdoor Unit)" p.82ff (ManualsLib scan of official manual)

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

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Related fault codes

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