Haier HSU-12HSA03/R2(DB) F4: Overheat protection for exhaust temperature, Haier air conditioner

Haier air conditioner Edition: 20070116

F4: Overheat protection for exhaust temperature

Electrify the machine again and turn it on with the remote controller, then measure the

temperature at the exhaust temperatureYes sensor of the compressor on the outdoor unit

and check whether the temperature exceeds 110 shortly after the machine starts up

1)The cryogen may have been leaked during installation, or there may be leakage in the piping system.

2)There may be other causes to make the exhaust temperature too high.

No

Measure the temperature at the exhaust temperature sensor of the compressor on the outdoor unit and Malfunctions occur after running for some time even though the measured temperature is below 110 .

No

Pull out the exhaust sensor and measure its resistance at standard temperatures. Check whether the results deviate much from those in the resistance-temperature table

No

The outdoor mainboard is damaged and needs be replaced

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Yes

Yes

Exhaust temperature sensor is broken and needs be replaced

The sensor is damaged. Replace the sensor with a new one.