Fault Codes / Daikin / C0

DAI

Daikin C0

High

Altherma — Flow sensor (flow switch) malfunction.

Daikin C0: Flow sensor (flow switch) malfunction. This fault noticeably affects operation.

Possible causes

No/low flow detected.
Flow sensor fouled/faulty.
Strainer/filter clogged.

Check steps

Clean strainer, stop valves open?
Check pump & flow sensor.

Affected parts

Durchflusssensor
Schmutzfänger

Safety note

Depressurize/isolate the unit.

Source: Daikin Altherma 3 Installer Ref. 4P685228-1A (2022.05) §15.4

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

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