Haier HSU-18HEA03/R2(DB)-I Service Manual

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Haier HSU-18HEA03/R2(DB)-I Service Manual Manual pdf 14 page image

HSU-18HEA03/R2(DB)-I Funcitions and ControlDomestic Air Conditioner125. Funcitions and Control0DLQIXQFWLRQVDQGFRQWUROVSHFL¿FDWLRQRILQGRRUXQLW5.1.2 Cooling operation modeTemperature control range: 16°C---30°CTemperature difference: ±1°C* Control features: When Tr(input airflow)>Ts(set temperature)°C, the compressor will be opened,theindoor fan will operate at the set speed and the mode signal will be sent to the outdoor system. WhenTr(input DLUÀRZ < Ts(set temperature)°C, the compressor will be opened,the indoor fan will operate atthe set speed and the mode signal will be sent to the outdoor system. The system will keep the originalstatus if Tr= Ts.$LUÀRZVSHHGFRQWURO WHPSHUDWXUHGLfference 1°C)Automatic: When Tr>=Ts+3°C, high speed.When Ts+1°C=When TrWhen the sensor is off, low speedWhen the DLUÀRZ speed has no delay from the high to low switching, the speed should be delayed for 3minutes (remain at high speed for 3 minutes.) before the next switch.'HKXPLGL¿FDWLRQPRGH* temperature control range: 16---30°C* temperature difference: ±1°CControl feature: send the dehumidify signal to the outdoor system.When Tr>Ts+2°C , the compressor will be turned on, the indoor fan will operate at the set speed.When Tr is between the Ts and Ts+2°C , the outdoor system will operate at the high dehumidify frequency5.1.1 automatic run modeWhen the running mode is turned to automation after starting the system, the system will firstdetermine the running mode according to the current room temperature and then will run according tothe determined mode. Tr in the following selection conditions means room temperature, Ts meanssetting temperature, Tp means temperature of indoor coil pipeTr 23 Choose Cooling ModeTr 23 Choose Heating ModeAfter turning to the automation mode, the running mode can be switched betweencooling mode, fan mode and heating mode according to the change of the indoorambient temperature. But the automatic conversion between cooling mode andheating mode must be conducted after 15 minutes.