Fault Codes / Daikin / EA

VRV / Sky Air — 4-way valve / cool-heat switchover fault.

Possible causes

• 4-way valve coil faulty / stuck.
• Insufficient pressure diff for switchover.

Check steps

• Check coil (resistance) & control signal.
• Observe valve switching (temp/sound).

Affected parts

• 4-Wege-Ventil (Spule)

Safety note

Source: Daikin SM-TS3 (Simple Self-Diagnosis by Malfunction Code, resmi) veya VRV IV+ Service Manual (ManualsLib) — SM-TS3 p.3: EA 'Malfunction of four way valve or cool/heat switching' — object table shows ONLY RA checked (not VRV/SkyAir/Package/Chiller). The VRV applicability is NOT explicitly confirmed by the official object table;

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

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