HIT

Hitachi 0C

Medium

Set Free Sigma / IVX (FSXN) — Incorrect outdoor main unit address configuration

Hitachi 0C: Incorrect outdoor main unit address configuration This fault usually isn't an immediate stop, but should be checked soon.

Possible causes

Incorrect DSW6 setting on outdoor units B and C
Four or more outdoor units connected to the O.U.~O.U. transmission terminal

Check steps

Verify DSW6 settings of secondary outdoor units (B/C) and reset power supply
Ensure proper connection of operating lines between outdoor units

Affected parts

PCB1 (outdoor units)
DSW6 dip switch

Safety note

Disconnect power before changing DIP switch settings.

Source: Hitachi resmi servis kılavuzu (bağımsız çift-doğrulandı) — Hitachi FSXN Series Service Manual (ManualsLib doc ID 2375584), "Troubleshooting by Alarm Code" section, p.198: Alarm code 0C = "Incorrect outdoor main unit setting" — occurs when DSW6 (outdoor unit address/address-setting dip switch) is set incorrectly for outdoor units B and/or C (secondary units) in a multi-outd…

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