Fault Codes / Daikin / A5

High

VRV / Sky Air — Freeze-up / high-pressure peak-cut at indoor coil.

Possible causes

• Cooling: iced coil / low airflow.
• Heating: high pressure (airflow/soiling).
• Thermistor R2T faulty.

Check steps

• Clean filter/coil, check airflow.
• Check charge & coil thermistor.

Affected parts

• Wärmetauscher-Thermistor (R2T)

Safety note

Source: Daikin SM-TS3 (Simple Self-Diagnosis by Malfunction Code, resmi) veya VRV IV+ Service Manual (ManualsLib) — SM-TS3 p.3: 'A5 High pressure control in heating, freeze-up protection control in cooling — Clogged air filter of indoor unit and short circuit, Defect of indoor unit heat exchanger thermistor.'

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

Look up in Enthalio →

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