Fault Codes / Panasonic / H99

High

Etherea — Indoor heat exchanger anti-freezing protection.

Possible causes

• Dirty air filter, low refrigerant charge, or insufficient airflow.

Check steps

• Clean air filter, check refrigerant charge.

Affected parts

• Luftfilter

Safety note

Source: Panasonic CU-E18DBE Service Manual, "Error Code Table" p.66 (ManualsLib scan of official manual)

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

Look up in Enthalio →

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