Model reference

Haier HSU-09HS03/R2(DB)

Name: Haier HSU-09HS03/R2(DB)
Brand: Haier

Air Conditioner

1 document17 error codes4 service modes

Available documentation

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M+ Max·Haier Air Conditioner

1 on my Haier HSU-09HS03/R2(DB)

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Outdoor temperature sensor abnormity

From Service Manual 341233, p.45:

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

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

3.Check the sensor harness for opens. A reading outside 5 kΩ to 50 kΩ indicates a failed sensor.

Part WR55X10025

Temperature sensor

CodeMeaning

Forced cooling operationShort circuit the forced cooling operation switch on the outdoor board before electrifying the unit.
Forced heating operationShort circuit the forced heating operation switch on the outdoor board before electrifying the unit.
Indoor unit operates only (self-test)Under none-power-failure-compensation mode, press the sleep key 6 times within 7 seconds (6 beeps…
Trial runningActivate trial running mode (indicated frequency 58Hz, wind volume strong).

Full entry steps, exit procedures, and test sequences are available in Max.

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