Hisense Inverter hang presses automatically shut down, turn the fan Published: January 13, 2015 Source: Unknown Hits: 141 Symptom: press automatically shut down, turn the fan Analysis: First, look at the code in case of failure of this lamp LED1, LED2 , LED3 display state as a bright flash, off the overcurrent protection, troubleshooting, mainly divided into the following steps: (1) emphasis on the DC20V gear multimeter, measure the resistance R14 for voltage of about 1.5V (this voltage with current change change) If the voltage is about 1.5V, indicating the chip problem Xuzhou industrial air conditioning repair phone, if there is no voltage of 1.5V, indicating LM358N stage before there is a problem, when the measured voltage is 5V, indicating diode D5 breakdown ( 2) Measure the resistance R11 if there is a voltage of about 0.09V (change this voltage with current changes), if there is a voltage of about 0.09V Xuzhou conditioning maintenance, instructions LM358N bad, if not 0.09V voltage explain the presence of the first stage of sampling resistor Problems (3) with a multimeter ohm power measurement sampling resistor R5, R1, R56 for open air conditioning repair, by measuring R1, R5 normal resistance, R56 R56 resistor open replace troubleshooting. What is a three-phase three-wire power supply? What is the three-phase four-wire power supply? Three-phase three-wire connection is a three-phase AC power supply from the terminal 3 of the coil lead wire 3, and the other end of the three coils end together Xuzhou home central air conditioning maintenance, also known as star connection, common symbols "Y" indicates that this leads to three wire power mode called three-phase three-wire system. If further from the junction of three coils and then leads a trailing wire, which leads to four wire power supply system called phase four-wire mode. What is the phase line (or FireWire)? What is the middle (or neutral)? Junction 3 trailing called the midpoint of wire leads from the point called neutral or zero line. From 3 ends with wire leads call or line. Xuzhou home central air conditioning repair and maintenance _ _ Sheng Erda refrigeration provided by Xuzhou 圣尔达 Refrigeration Electrical Services Limited. Xuzhou 圣尔达 Refrigeration Electrical Services Limited (xzktw.com) strong, credible, Xuzhou in Jiangsu Province of heat, refrigeration and air conditioning equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Sheng Erda refrigeration into the brilliant and you work for a better future!