Bosch Error Codes

Common error codes

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Bosch 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

E1

Temperature Sensor Fault

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E2

Coil Sensor / Freeze Protection

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E3

Fan Motor Fault

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Outdoor Unit Error Codes

E4

Coil / Overheat Protection

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System Error Codes

E5

Overcurrent / Compressor Load

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F1

Communication Fault

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F2

Sensor / Thermistor Fault

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H1

Defrost Mode / Heating Cycle

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P1

High Pressure Protection

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P2

Low Pressure / Refrigerant Leak Risk

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