Haier HSM18HEKC03/R2 Service Manual

Haier HSM18HEKC03/R2 Service Manual Manual pdf 23 page image

HSM18HEKC/HRAC03/R2(DB)HUM18HC03/R2(DB)-SM Function and controlDomestic Air Conditioner215.1.19 Time cutting function:connect the test program terminal on the mainboard after connecting the system to the power circuit.The CPU of the main control will be 60 times faster.5.1.20 Display functionWhen the system starts up or power on, the background and the LED will be fully lighted for 3seconds. Then the LED displays the mode you have set.5.1.20.1 Three-color backgroundThe multi-color indicator is not lighted when the system is off. The mode-switching will change theindicator colors. Red color is for heating mode, blue for cooling, water color for demoisturing, white forautomatic mode, pink for airflow sending, green for health mode and yellow green for air refreshing.The colors health, refreshing colors are preferred to the mode colors. If different status exist at thesame time, then the last set color will be shown. The lighting key of the control board can turn on or offthe display.5.1.20.2 LED display*Set timing to display timing signs, set dormant mode to display dormant sign.(The dormant signs willbe shown on the G series panels.), set health mode to display health sign, set new airflow mode todisplay new airflow sign and set violet disinfection to display health sign.*Set auto, heating, demoisturing, heating to display the relative signs. When you use a remote controlto switch cooling, demoisturing and heating modes, the set temperature will be shown and the screenboard will return to the room temperature 5 seconds later. If you choose the airflow sending mode, thescreen board will show the room temperature directly.*If the system is under malfunction status, the display will show the malfunction code. Please refer tothe malfunction list.5.2 The control system of outdoor unit5.2.1˖The operation frequency of outdoor unit and its control5.2.1.1˖The operation frequency control of compressorThe operation frequency scope of compressor˖Mode Minimun operation frequency Maximun operation frequencyzH001zH02gnitaeHzH09zH02noitaregirfeR5.2.1.2˖The starting of compressorWhen the compressor is started for the first time, it must be kept under the conditions of 58Hz,88Hzfor one minute (the overheating protection of the outdoor unit air-blowing temperature, immediatelydecrease the frequency when the compressor is overflowing and releasing the pressure)ˈthen it canbe operated towards the target frequency. When the machine runs normally, there’s no such process.After starting the compressor for operation, the compressor should run according to the calculatedfrequency, and every determined frequency for protection should be prior to the calculated frequency.5.2.1.3˖The speeds of increasing or decreasing the frequency of the compressor