HIS

Hisense 43

Critical

Hi-Flexi — Activation of low compression ratio protection device.

Hisense 43: Activation of low compression ratio protection device. This fault typically halts operation and needs immediate attention.

Possible causes

Insufficient pressure difference between suction and discharge side.

Check steps

Check operating pressures and refrigerant charge.

Affected parts

Servicehandbuch — Fehlercode nachschlagen

Safety note

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Source: HMS Intesis KNX - Hisense VRF User Manual, "Error Codes For Indoor And Outdoor Units" p.24-26 (ManualsLib scan of official Intesis gateway manual)

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

Look up in Enthalio →

Related fault codes

Communication malfunction.03 Indoor unit drain pan / float switch abnormali01 Outdoor unit — protection shutdown.02 Transmission error indoor ↔ outdoor.04 Power source phases abnormal.05 Abnormal inverter voltage / voltage drop.06