Hisense Air Conditioner Error Codes

7 error codes for Hisense air conditioner models. Each links to the full diagnostic procedure from the service manual.

CodeDescription

E1Indoor ambient temperature sensor failure; the air conditioner shuts down for…E2Indoor tube temperature sensor failure; the air conditioner shuts down for…E3Outside tube temperature sensor failure (heat pump type); the air conditioner…E5High water level switch is closed; the air conditioner shuts down for…E6Upper electric motor has no feedback; the air conditioner shuts down for…E7Lower electric motor has no feedback; the air conditioner shuts down for…EACommunication system failure.

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Step-by-step tests with expected resistance, voltage, and continuity values
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M+

M+ Max·Hisense Air Conditioner

E1 on my Hisense Air Conditioner

M+

Indoor ambient temperature sensor failure

From Service Manual 464572, p.24:

1.Access service mode to confirm the active fault code and read stored error history.

2.Disconnect the sensor and measure resistance at the sensor body. Expected: 10 kΩ to 12 kΩ at 77°F (25°C).

3.Check the sensor harness for opens and shorts. Back-probe the sensor pins at the control board connector; a reading outside 5 kΩ to 50 kΩ indicates a failed sensor.

Part WP8577274

Temperature thermistor

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