Fault Codes / Aux

26 codes

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• E0 — Communication error outdoor/indoor
• E4 — Indoor fan motor (PG) feedback abnormal

Inverter

• E1 — Indoor room sensor open/short.
• E2 — Indoor coil pipe sensor open/short.
• E3 — Indoor fan motor fault.
• E5 — Sensor fault.
• E6 — Indoor ↔ outdoor communication error.
• E8 — Communication fault between display board and PCB board.
• Eb — Indoor unit PCB EE(PROM) error.
• F0 — Outdoor unit fan motor error.
• F1 — Outdoor air sensor open/short.
• F2 — Outdoor condenser pipe sensor open/short.
• F3 — Discharge temperature sensor open/short.
• F4 — IPM/inverter module fault.
• F6 — Outdoor unit ambient (room) sensor error.
• F8 — Outdoor unit communication error between main PCB board and module board.
• F9 — Outdoor unit PCB EE(PROM) error.
• FA — Suction sensor error.
• Fb — Indoor unit DC motor error (floor standing units).
• P2 — High-pressure switch protection.
• P3 — Lack of refrigerant protection.
• P4 — Condenser overload protection (cooling mode).
• P5 — Discharge temperature protection.
• P6 — Evaporator overload protection (heating mode).
• P7 — Indoor unit anti-freezing protection (cooling mode).
• P8 — Outdoor unit overcurrent protection.