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Mitsubishi Electric Error Codes

Common error codes
Hycool Air Conditioning & Electrical

Search Code or Problem

Mitsubishi Electric air conditioning units utilize error codes to indicate specific malfunctions or issues. Below is a list of common error codes along with their descriptions.

Indoor Unit Error Codes

E2

Remote Controller Communication Fault

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E3

Drain / Water Leak Fault

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E4

Indoor Coil Sensor Fault

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Outdoor Unit Error Codes

E5

Outdoor Coil / Discharge Temperature Fault

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System Error Codes

E1

Indoor / Outdoor Communication Fault

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P1

High Pressure Protection

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P2

Low Pressure Protection

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U1

Power Supply / Voltage Fault

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U2

Overvoltage / Undervoltage Protection

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U4

Communication Fault

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