格力变频空调故障代码（GREE inverter air conditioner faultcode）Fault code cabinetE1: compressor high voltage protection, when 3 seconds continuous detection of high voltage protection (greater than 27KG/CM2), turn off the light box, other loads, shielding all buttons and remote control signal, the indicator light flashing and display E1.E2: indoor anti freeze protection, in refrigeration, dehumidification mode, the compressor starts 6 minutes, 3 minutes of continuous detection of T vapor is less than or equal to -5 DEG C, flashing lights and display E2, stop the compressor and outdoor fan: when the T evaporation of more than 6 DEG C, the compressor has been stopped for three minutes, the light is off, liquid crystal display recovery operation, according to the original state. Masking key.E3: low pressure compressor protection, compressor start three minutes after the start of low pressure switch signal detection, if detected 3 minutes of continuous low voltage switch disconnect, the stop lights flashing, E3 display, to remind the user of system leak.E4: high temperature protection of the exhaust pipe. After the compressor is started, the exhaust temperature is higher than 120 DEG C or the exhaust pipe temperature head is shorted (open circuit) for 30 seconds, the indicator flashes and shows E4.E5: low voltage protection (over current protection). After the compressor is running, if the current is detected more than 3 seconds for more than 25A, the indicator flashes and displays E5.E6: electrostatic precipitator protection.Characteristics and application characteristics of frequency converterVariable frequency air conditioner is a kind of air conditioner whose frequency conversion rate can change with the change of load. After starting up, if the room temperature is different from the set temperature, the high frequency and high power operation will make the room temperature reach the set temperature rapidly, which is twice as fast as that of the ordinary air conditioner. Then the body will be in accordance with the requirements of environmental temperature and humidity, automatically using low frequency and low power operation, to maintain the set temperature, avoid frequent starting of ordinary air-conditioning, temperature fluctuation phenomenon, people in a comfortable environment.GREE inverter air conditioning uses a new concept design fan air duct system, greatly reducing the noise of the whole machine. The technology of frequency conversion and fuzzy control adopted by the utility model can automatically adjust the running state according to the change of the environmental temperature, and carry out the energy saving operation with the best output powerDigital temperature sensor.Built in microcomputer temperature sensing device, can accurately perceive the temperature difference of 0.5 degrees celsius. The temperature exceeds a predetermined value, and the digital control system responds immediately to a constant optimum room temperature.Low temperature heating is strongGREE air conditioner outdoor machine adopts two gear motor and electric auxiliary heat device, unit heating high wind open, effectively improve the unit heating capacity, to avoid the disadvantages of insufficient heat in winter, average heat 600 900W higher than the cooling capacity.Digital DC variable frequency compressorGREE digital DC frequency compressor will, according to the change of temperature to adjust the frequency of the compressor is always in the best state power output; adopting digital control, greatly improve the efficiency of refrigeration (heating), reached the set temperature than ordinaryair-conditioning more than twice as fast, saving 30 more than%.Advantages of variable frequency air conditionerFirst of all, energy saving, because of the use of variable frequency control technology, to avoid unnecessary waste of electricity. Because the traditional air conditioner controls the operation of the motor on / off mode, it needs to consumea great deal of energy in the process of starting the compressor motor. But the frequency conversion type compressor depends on the room temperature and sets the temperature and so on parameter to control the rotational speed, when the room temperature achieves the request comfortable temperature, has maintained the low frequency movement, will not stop immediately. Thus, it ensures that the air conditioner does not cause additional energy loss when the compressor is started frequently.Unit is different from ordinary air conditionersDifferent from the traditional air conditioning inverter air conditioner, mainly through the processing of power frequency inverter, the power supply frequency of the compressor can be changed, so that the compressor motor speed change, to control the compressor exhaust control, refrigeration, air conditioning to truly achieve energy-saving effect.In addition to the function of the refrigeration and heating system and the working principle of the inverter type air conditioner, the control system and compressor are different from the general air conditioner, and the frequency converter is added. And the frequency conversion compressor adopted,In the process of operation, the frequency converter is controlled by the frequency converter of the control system, and the refrigerating or heating capacity of the air conditioner will change with the change of the compressor speed. Variable frequency compressor and general compressor is different, it can be arbitrarily high and low speed operation,so that the displacement of the compressor has been effectively changed and controlled. Such compressors are mostly scroll type, double rotor, rotary and other efficient compressor.Installation precautions and maintenance technology of inverter air conditionerInstallation notesThe outdoor unit must be installed in a well ventilated position, otherwise it will cause the air conditioner to work at low frequency. The compressor and the frequency module are easy to be protected frequently, which will lead to the shutdown (the current is too large).A connecting line with wire clamp, pull off, avoid breaking wires, connectors must be reliable, otherwise, easy to cause the fire caused by fire accidents; the signal line will lead to poor contact can not afford to open the machine or compressor frequent stop.All inverter air conditioners must be reliably grounded, and the user's home has no ground wire. When the air conditioner does not have ground wire, the common fault is frequent opening and stopping, and the work is unstable.When all inverter air conditioners are installed, both internal and external machines must be connected by frequency converter.Maintenance Note (part of the control element fault analysis)Interior partEnvironmental temperature package open circuit: when the whole machine does not start or stop when it is cooled, it works normally when heating, and has been operating at high frequency.Open tube temperature package: split machine and light box Guiji, prone to work 6 minutes to 10 minutes to stop the machine, LCD will display E2 and stop outdoor machine.Tube temperature package short circuit: refrigeration is no freeze protection, the external machine does not start; heating is no protection against high temperature; the whole machine stops working.When the resistance value of all temperature control elements is deviation, the frequency will always appear high frequency, no down frequency or low frequency. (some temperature control elements are normal in the case of no power. It is better to check through electricity.)Outdoor partCompressor overheating protector, when it appears to protect: stop the outdoor unit, the external machine board indicator light flashing and long time can not open the machine.Outdoor defrosting pipe temperature head open circuit: Refrigeration normal: heating time will be 45 minutes defrost, 10 minutes defrost, cycle.Outdoor defrosting pipe temperature short circuit: refrigeration, heating will not work.When the outdoor environment is warm and the temperature is open, the operation of the air conditioner is not affected.Outdoor environment temperature sensitive package short circuit: when the refrigeration is not affected, the heating time and space transfer has been low frequency, the frequency does not rise.The air conditioner runs at a high frequency (without decreasing frequency) when the exhaust air temperature of the compressor is opened.When the compressor exhaust air temperature is short, the refrigeration and heating can not be started.Fault diagnosis and replacement of frequency converter (module)After measuring whether a DC voltage of about 300V between p+, nCheck whether the +5V and +12V outputs are normal. You can find some measurements on the outside machineIf normal (a) and (b) are normal, check whether the U, V, and W phases have balanced AC outputs. (to check the voltage between the U, V and W, it is better to remove the compressorconnections)If normal (a), (b) and (c) are normal, check that the compressor coil resistance is normal. (compressor three terminal resistance is equal, resistance value should be 1~3 ohms)When the module is changed and installed, it must be coated with cooling cream. The screws should be tightened evenly and pressed against the heat sink. Otherwise, the temperature is too high, the modules will be protected frequently, and the compressor will stop frequently.The 10 communication lines between the outdoor master board and the module must be carefully inserted, and the +5V and +12V on the controller are all output by the module. 10 communication lines, three of which are: ground, +5V, +12V, and the other 7 are data lines, which need to be tested by oscilloscope.Outdoor unit two rectifier bridge, one for the 220V input, output 300V DC to module p+ and N at both ends: the other is a half wave rectifier filter function.The reactor is a conducting coil, and it is only necessary to check that both ends are connected.Four, frequency converter common faultsThe outdoor unit does not workAfter the boot, check whether the outdoor machine 220V voltage, if not, please check whether the indoor and outdoor machineconnection is correct, the indoor machine board wiring is correct, otherwise change the indoor machine board.Please check the transformer as the electric buzzer doesn't turn off.Such as outside the machine with 220V voltage, check the motherboard red light is on, otherwise check the machine connecting line is loose, the power module p+, N whether there is a DC voltage 300V, if not, then check the reactor, rectifier bridge and wiring. If there is, but the board indicator does not light, check the power module to the motherboard signal cable (total: 10) whether loose or poor contact, and then not, replace the power supply module, module replacement, between the radiator and the module must be coated with thermal grease.If the outdoor machine has the power, the red light machine does not start, you can check is internal and external communication, (inspection methods: press "TEST" button, the indoor machine observation indicator), any kind of flashing lights as normal, otherwise the communication problem; check inside and outside machine connecting line whether the flat line special, or replacement. If the communication is normal, please check the inside and outside machine, whether the temperature package is open or short circuit or the resistance is not normal, whether the overload protector terminal is connected or not. The above two methods can not be solved, then replace the outdoor controller.Such as the boot 11 minutes or so, and can not start, please check the temperature of the indoor tube temperature packageis open; if after the boot and then start, the fan does not start, check the indoor, exogenous temperature head is short-circuit.The air-conditioner has been running at low frequency since it is turned onPlease check the indoor pipe temperature, outdoor environment, compressor and defrosting, whether there is an open circuit or short circuit, the abnormal resistance.P board fault code frequency Guiji and SolutionsE1: compressor current is too large, compressor overheating, exhaust temperature is too high, module protection, overload protector, whether short-circuit, compressor temperature sensitive package is short circuit.E2: indoor machine evaporator antifreeze protection, check whether the temperature sensor package open, can be excluded.E3: room temperature, temperature sensitive package, short circuit or open circuit.E4: interior tube temperature sensitive package open or short circuit.E5: indoor and outdoor communication failure, check whether the indoor and outdoor connection line is wrong (zero, FireWire can not be connected): the signal line and the control connection, whether the socket is loose or not, and whether the controller is damaged or not.During heating, the chamber does not workPlease check whether the power line (inside and outside machine) is correct, whether the power line is grounded or not. If the above is normal, replace the main board of the indoor unit.Troubleshooting guide for variable frequency air conditioner seriesGREE, a 2000 frequency converter and frequency conversion cabinet seriesThe reasons why the outdoor unit does not start are: the power module is bad, the communication between the indoor and outdoor is not normal, the indoor temperature fault is outside, the compressor overload protector is open, the pCB board is broken, and so on, and the concrete judgment and treatment method are also given:The bad: the power supply module after power supply module p+, first check whether there is a N 310VDC voltage, if no, please check the outdoor machine main circuit rectifier, reactor and capacitor is faulty, the wiring is loose, and check pTC resistance is bad, pTC resistance is normal, its resistance is 30 ohms to 60 ohms, open circuit or short circuit is not normal. If there is a 310VDC voltage, and the outdoor machine pCB in the red indicator light does not shine, please check the pCB signal between the ten core board and the power supply module connecting line is good contact, the power module on the needle base pin is bent, such as above normal, while the pCB officeon the red light is not bright, that the power module is bad. If the red indicator light is on, the compressor does not start, the compressor U, V, W three lines unplug, boot, the external air function normal operation (more than three minutes), also shows that the power supply module is bad.Note: when changing the power module, be sure to heat the radiator evenly on the power module and radiator.Indoor, exogenous temperature package failure (failure phenomenon does not start or after a period of time to stop): frequency converter control and indoor, exogenous temperature package are related.Cooling and pumping mode: if there is a stop phenomenon for a few minutesPlease check if the temperature in the pipe is faulty or the temperature is too low to prevent cold protection.Please check whether the outdoor temperature sensing package is faulty or the temperature is too high. When the T is 65 degrees centigrade, the compression opportunity will be stopped and the operation will be resumed when T is less than 58 degrees centigrade.Is the exhaust temperature sensor too high or faulty?. T row > 115 degrees, stop compressor, T row less than 92 degrees to resume operation.Whether the overload protector is open or the compressor isoverloaded or out of contact or out of order.(2) heating model:If the compressor does not start, the fan always does not turn, is a communication failure, please check the indoor connecting line is correct, whether completely reliable grounding.Indoor tube temperature protection, when the T tube is 65 degrees, stop the compressor; T < 52 DEG C to resume operation, the processing method can first Guan Wen bag pull out or change the new temperature sensitive package.Exhaust temperature protection and overload protection with refrigeration.3, indoor and outdoor other fault displayLED1 the light is green and the compressor is stopped and faulty;LED3 yellow light, outdoor environment, temperature package failure;LED2 the red light is on, and the outside pipe feels warm and the temperature is faultyLED1 the green light flashes and the module has a protection signal;LED2, LED3 red light, yellow light flashing, compressoroverload protection signal;The green light, the red light and the yellow light are all bright at the same time, and the exhaust temperature sensor is faulty;Indoor D1 light, compressor operation;Indoor D2 light, communication work properly, otherwise it is not normal;Indoor D3 light, interior temperature package failure.Introduction of power moduleSignal line function introductionTake the red line of the signal line as the baseline. It is line one. The lines are as follows:Line 1: negative phase of W phase control signal; line 2: positive control signal of W phase;Line 3: negative phase of V phase control signal; line 4: positive control signal of V phase;Line 5: U phase negative end control signal; 6 good line: U phase positive end control signal;Line 7: ground wire; line 8: +5V line; line 9: +12V line;Line 10: module protection signal line;Two 、 module protection type: when the power module has over / over current (short circuit) and under voltage protection, the power module has microsecond output signal.GREE accessories model identification1. Identification of temperature sensitive package and tube temperature packageGREE began using a temperature range of 15K/25 degrees 20K/25 degrees celsius. The temperature sensing head with a white heat shrinkable sleeve about 20mm on a black word, such as the temperature of 15K/25 DEG C (15K), such as on the temperature of 5K/25 DEG C hit (5K); if you do not see, look at the terminal can also identify the white color, the terminal is 5K/ DEG C, red the terminal is 10K/25 Deg. C (such as the four core temperature, environment temperature of 5K/25 DEG C, temperature package for 10K/25 C), the black terminal is 15K/25 Deg. C, C 20K/25 (15K for the environmental temperature, 20K tube tube temperature package), yellow terminal is 50K/ DEG C; at the same time the temperature of 10K/25 DEG C sense lead to blue, the temperature of 50K/25 DEG C sense leads to black, 5K/25 C. 15K/25 DEG C. 20K/25, the lead of temperature sensitive package is dark black. (two core temperature sensitive package terminal is XH, usually environment temperature sensitive package, terminal is EH, generally pipe temperature sensitive package) Just a little attention can be identified.。
