Haier HSU18XH7-G Service Manual - Page 12
Functions and control
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HSU-18 24 HEK13/R2 5 Functions and control Functions and Control 5.1 main functions and control specifications Including brief introduction to air conditioners of series models and electric control function. 5.1.1 Automatic running 5.1.1.1 Single cold automatic run mode: After entering into this mode, the main control "MCU" determines the corresponding work pattern according to the indoor temperature so as to maintain the preset temperature (the preset temperature is 26 ). When the indoor temperature is below 26 , outlet air from compressor is off, the automatic wind from fan motor is low, and wind can be set to high, medium or low by hand. When the indoor temperature is or above 26 , the unit enters the cooling mode and conducts the cooling programme (the preset temperature is 26 ), outlet air from compressor is on and indoor fan motor run in fixed wind speed. 5.1.1.2 Automatic running mode When the running mode is turned to automation after starting the system, the system will first determine the running mode according to the current room temperature and then will run according to the determined mode. Tr in the following selection conditions means room temperature, Ts means setting temperature, Tp means temperature of indoor coil pipe a. Tr 23 running cooling mode b. TrTs+5 , compressor is off, and the indoor fan motor runs as in cold blast avoidance mode. When Tr