Daikin F3

Critical

VRV / Sky Air — Discharge pipe temperature too high.

Daikin F3: Discharge pipe temperature too high. This fault typically halts operation and needs immediate attention.

Possible causes

Low refrigerant / poor superheat control.
EXV malfunction.
Discharge thermistor (R31T…) faulty.

Check steps

Check charge & subcooling/superheat.
Measure discharge thermistor.
Check EXV operation.

Affected parts

Heißgas-Thermistor
Kältemittel

Safety note

Hot discharge side & follow F-Gas.

Source: Daikin SM-TS3 (Simple Self-Diagnosis by Malfunction Code, resmi) veya VRV IV+ Service Manual (ManualsLib) — SM-TS3 p.3: F3 'Malfunction of discharge pipe temperature' — RA/SkyAir/VRV/Package/Chiller all checked. Matches index.html.

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

Look up in Enthalio →

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