what causes a refrigerator compressor to fail

Controls Globe Valves, Johnson The results of a lack of oil are overheating, because of excess friction, and finally, a “seized-up” compressor. A common cause of Three-phase motor compressors failing is from voltage and current imbalance. Flooded starts can be minimized on cap tube systems by having the proper charge in the system. Flooded starts are the result of the oil in the crankcase-absorbing refrigerant during the off cycle. Compressor manufacturers are concerned about failure of their product, since it can reflect negatively on them. Visifloat and RateMaster Flow meters, Hedland In any case, when replacing a compressor, the technician should go over the entire system to locate the reason, or reasons, the compressor failed, keeping in mind the compressor was “killed.”, (Items are not listed in any order of importance or number of occurrences.). Supplies, Functional Devices (RIB) The chemical reactions that take place when a compressor burns out will create a lot of acid, moisture, and solids in the form of carbonized oil and “soot.”  The soot will coat the inside of the discharge line at least to the first elbow, and depending on the size of the system, some distance beyond the elbow. Crankcase heaters should be used, and if present, should be checked that they are not burned-out and “on” at the proper time. Controls Pressure Switches & Controls, Bacharach With a full hermetic compressor, identifying a cause of failure by inspecting internal parts is not possible, since the shell is not usually cut open in the field. Pressure Switches and Controls, Johnson How Refrigerators Function Understanding how they work and what makes them go can actually go a long way in helping you select a quiet fridge or at least resolve an issue on a fridge that went from quietly humming to clanging and clanking. (Great Plains Industries) Turbine Flow Meters, Honeywell Versaflow Ultrasonic When you fail to lubricate the internal components of an air compressor sufficiently, friction occurs between the metal surfaces. Refrigerant will condense in any cold part of a system during the off cycle. Recently, a major manufacturer of compressors conducted a yearlong teardown study and analyzed their findings. Single Loop Controllers, Honeywell Trend Manager Deep or triple evacuation of the system is an absolute necessity to remove air and moisture before putting the system back into operation. Typically, compressors die because something in the air conditioning or refrigeration system changes, which affects the compressor performance. Foam will not “splash.”. Electrical Panel Meters, Action The temperature at the valves of a compressor is about 50°F hotter than the discharge line temperature. Recently, a major manufacturer of compressors conducted a yearlong teardown study and analyzed their findings. It is best to cutout, remove, and replace these coated sections of line with clean, new tubing (Government regulations no longer allow cleaning up by pumping R-11 through systems). If you consider how hard a refrigerator has to work, it is actually quite amazing that they break down so infrequently. There can be any issue with the system, motors, the parts of the compressors and others. The ability to disassemble a semi-hermetic compressor in the field allows the service technician to inspect the internal parts of the compressor and helps to determine the cause of failure. An oversized TXV will hunt under a light load and can cause a slug. More often, the suction, discharge, or both valves will be bent or broken. Controls Gas Detection, Honeywell During hot weather, the compressor may overheat, causing it to temporarily shut down. Overcharging will increase the head pressure, which increases the flow rate through the expansion device until there is too much flow available for the heat transfer in the evaporator to boil the entire refrigerant off. It bears repeating that only two things should be inside any refrigeration system:  refrigerant and oil. Refrigerator compressors may also fail completely. Oil will leave the crankcase of the compressor at an excessive rate because of foaming and flooding. On startup, bearing lubrication will be marginal at best, and as the crankcase pressure drops, the refrigerant will boil, flashing to a gas, causing “foaming.”. If there is too little or too much gas in the closed-loop system, it might cause there to be too much pressure in the compressor. The start relay is a small device mounted to … The ability to disassemble a semi-hermetic compressor in the field allows the service technician to inspect the internal parts of the compressor and helps to determine the cause of failure. This high temperature will cause carbonization of oil on the discharge valves. Combustion Analyzers, Honeywell It is best to assume that all burnouts are bad burnouts and proceed accordingly. According to the professionals catering to Maytag fridge repairs , the abrupt rise in the temperature breaks down the insulation of the motor winding. The most carefully designed and installed system will, at some time, suffer from low load running conditions. Controls Remote Bulb Temperature Controls, Honeywell Causes Of Refrigerator Not Cooling. Spring Return Actuators, Honeywell If your system’s refrigerant lines develop holes or cracks, the air conditioner … Firstly, in the case that your refrigerator is too old and the motor has probably ended its useful life; secondly, the compressor motor may become over-heated in case of heavy usage (due to over stuffing as discussed earlier) and stop functioning. Transmitters, Schneider Electric Commercial HVAC Globe Valves, Honeywell Commercial HVAC Butterfly Valves, Johnson Controls Commercial HVAC Ball Valves, Johnson Controls Commercial HVAC-Butterfly Valves, TRIAC CONTROLS Automated Valves And Actuators, YARWAY Industrial Gate Globe and Check Valves, Three-way Mixing Valves Globe Valves Actuators, Refrigeration Compressor Failure: Cause & Cure – Part 1. Air in a system will displace refrigerant in a condenser resulting in high head pressure and higher than normal temperatures. Electric Spring Return Actuators, Siemens Non-Contact Level Transmitters, Honeywell The suction line may even be coated six inches to a few feet from the compressor. As previously noted, pump down helps keep excess refrigerant out of the crankcase. The internal parts of the compressor will show uniformly worn and scored bearing surfaces. Safety Relief Valves and Accessories, General Electric Variable Overheated compressors suffer suction valve failure, worn pistons, sludge and carbon formation, and since proper lubrication is impossible, the compressor will eventually seize up. Poor installation of the wrong TXV cannot be compensated for by valve adjustment. There are two sets of coils that help transfer heat through your AC system. Controls HVAC Controls, KMC Compressor failure is a big, expensive problem in the refrigeration industry. Devices/ RIB Current Sensors, Johnson Magnehelic Gauges, Orange With a full hermetic compressor, identifying a cause of failure by inspecting internal parts is not possible, since the shell is not usually cut open in the field. Start Relay Failure. Make good installation and service practices a habit. The refrigerator compressor fan is an indispensable part of the … 3 Reasons Your Refrigerator Compressor Might Fail, causes for refrigerator compressor failure, reasons for failure refrigerator compressor, reasons why compressor might break down refrigerator, 3 Reasons You Should Clean Your Refrigerator Gasket. Loss or lack of lubrication could be said to be the major cause of compressor failure, especially if we include floodback and flooded starts. Samsung Refrigerator Fast Track Troubleshooting: Hold buttons – Freezer, Fridge and Flex Zone for 6 seconds. The amount absorbed will vary according to the temperature and pressure in the crankcase. The refrigerator's compressor is the heart of the cooling system; without a working compressor the refrigerator cannot function. Compressors generate heat when they operate. For example, liquid slugging is a common cause of compressor failure, but the compressor doesn’t cause this phenomenon. Steam Trap Radiator Valves and Vent Valves, Honeywell The electrical problems are another reason when it comes to why compressors fail. Slugs can break connecting rods, even crankshafts. Loop-Powered Meters, Precision Result – floodback. Contamination was found to be the major cause of replacement compressor failure. Purpose Gauges, Ashcroft General As lubrication ages, it loses its viscosity due to prolonged exposure to heating and cooling cycles. September 21, 2015 Refrigerator Repair, Uncategorized 3 Reasons Your Refrigerator Compressor Might Fail, causes for refrigerator compressor failure, reasons for failure refrigerator compressor, reasons why compressor might break down refrigerator admin. They should be installed to facilitate easy replacement. All compressor manufacturers do spot teardown analysis on returned compressors. Humidity Transmitters, Vaisala All compressors are, Only two substances should be present inside your refrigeration, Just like oil is essential for the motor in your car, adequate, If you live on Long Island or in New York City and think your. Have no fear! Power Supplies, Honeywell Gate, Globe and Check Valves, Watts Process Instrument Explorer Software, Precision 1000, Miniprint RL, RL100, Partlow LF, MF, Those devices do not react much to load changes. Your email address will not be published. And this imbalance causes overheating. Maytag has received 41 reports of refrigerator relay ignition, including 16 reports of property damage ranging from smoke damage to extensive kitchen damage. Too low a super-heat allows more refrigerant to the low side of the system than the load will require. A strong electrical event can damage the windings that provide the start and run functions of the compressor, causing premature compressor failure. LX Field Controllers, Johnson Your refrigerator compressor might fail if it is contaminated, dry, or overheating. One third were perfectly good compressors — there was nothing wrong with them! That in itself will strain the compressor and cause it to break down unnecessarily. Temperature Switches, Barksdale As the engine that drives the cooling process, the compressor is an expensive piece of equipment to replace. Is it worth fixing a refrigerator? Electric Thermostats, Johnson Most modern day filter driers have acid removal capability. Compressors were still being “killed” by system problems. Current Sensors and Switches, Johnson When there is an insufficient amount of refrigerant in the A/C System, the thermal load on the A/C Compressor will become higher and finally can cause the A/C Compressor to fail. Variable Area Flow Meters, King Instruments Signal Conditioners, IP950X Electric Non-Spring Return Actuators, Schneider Most modern day filter driers have acid removal capability. If compressor is the heart , the refrigerant is the blood of the cooling … Forged Steel Globe Valves, Newmans … Broken valves, scored shafts, bent rods, overheating, single phasing, misapplication, improper operation, and not properly cleaning up a system when replacing the original compressor are evidence of system problems. Several … It is best to slightly undersize rather than oversize a TXV. Explosion-Proof I/PTransducer, ABB Fischer Controls Limit Controls & Freezestats, Honeywell Concentrating on the third where the cause of failure could be identified revealed that the reasons for failure had not changed from other year’s teardown studies. When this happens, the fridge will … Industrial Fixed Gas Detection, Johnson Miller Flow Switches, Johnson A hole may be punched in the top of a piston. “Slugging” usually results in a broken component. Temperature Switches, Invensys F hotter than the discharge line temperature. Share. What causes a refrigerator compressor to fail? Rodgers Electronic Thermostats, Honeywell Digital Scanners and Alarm Annunciators, Precision Digital Damper Actuators, Belimo Clean the compressor as often as you can to eliminate debris and clear it of any obstruction that may cause the compressor to fail and produce a loud noise. Leaking valves cause higher temperatures, causing more build up – finally, total failure. Gas Regulator Valves, Hancock Flooding is the continuous return of liquid refrigerant as droplets in the suction vapor instead of all super-heated vapor. Single phasing, where one leg of the three phases is lost, is the ultimate imbalance. The run capacitor assists the refrigerator compressor, which should only run for a few minutes in any given hour. An oversized TXV will hunt under a light load and can cause a slug. An oversized liquid line filter drier should be installed along with a suction line filter designed for high acid removal and having access fittings for checking pressure drop through the suction line filter. Controls Humidity Sensors, Johnson McDonnel 7866 Thermal Conductivity Analyzer, Honeywell Thermal Slugging almost always occurs on startup, but a very rapid change in system operating conditions can also cause slugging. Accumulators are most often found on low temperature systems, but all refrigeration systems can benefit from this relatively low-cost protective device. If … Other causes of lack of lubrication could be as simple as not enough oil in the crankcase to begin with, to as complex as needing a double riser suction line. All semi-hermetics use an oil pump to force oil to bearing surfaces. Purpose Gauges, Ashcroft Low A thorough evacuation will eliminate air and moisture. The DENSO difference DENSO is a global leader when it comes to the manufacture and distribution of A/C systems and A/C Compressors, preferred by several top vehicle makers including Audi, BMW, Toyota and … Replacing a “burned-out” compressor presents the ultimate challenge in eliminating contaminants. Research Variable Area Flow Meters, Honeywell Occasionally, a compressor manufacturer will teardown all returned compressors, for a period of time, to analyze them and determine the cause or causes of failure. Gauges, Ashcroft RF, MRC 5000, Belimo If none of those adjustments do the trick, the problem is likely due to a faulty part. Compressor Failure. Signet Paddlewheel Flow Meters, GPI Aside from that, dirty or frozen coils at the back of … Fittings - Barbed, Compression, Solder and Threaded, Pneumatic On a compressor with a crankcase sight glass, flooding can be observed as constant foaming of the oil during run. Gauges, ICON General Frequency Drives, Honeywell Variable Frequency Keeping contaminants out of a system in the first place is better than any procedure to remove them. Air, moisture, non-condensables, chips, oxides, scale, brazing, or soldering flux, any “dirt” that gets into a system accidentally or through poor service techniques is a contaminant that will lead to sure and swift failure! The single best device to protect the compressor from slugging and floodback is the suction line accumulator. Ultra-Low Differential Pressure Transducers, Ashcroft Bimetal Repairing the compressor is difficult and is not usually cost-effective. During operation, oil should leave the crankcase, travel throughout the system, returning to the compressor at the same rate that it left the compressor. Poor suction line sizing or poor installation of the suction line also causes slugging. Controls Air Regulators, Pneumatic Replace the filter drier, and if the compressor is semi-hermetic, change the oil, until an acid test proves the system is free from acid. The most common faulty parts when your refrigerator isn’t cooling are: Evaporator fan motor: This motor is crucial in the circulation of cool air into your unit. Is it the correct tonnage? Slugging is a short-term return of a mass of liquid, consisting of refrigerant or oil, or as a mixture of both. Reasons for oil not returning include low refrigerant velocity, low loads, traps in the suction line, suction line piping errors, and short cycling. Refrigerant is a lousy lubricator. Temperature Transmitters, Ashcroft Air in a system will displace refrigerant in a condenser resulting in high head pressure and higher than normal temperatures. Electric VAV Controllers, Honeywell Compressor Issues Stem from Defect, Lawsuit Says The lawsuit says that the cooling problem stems from a defect that’s causing the linear compressor – the part that’s responsible for cooling the refrigerator – to fail. Kreuter Pneumatic HVAC Controls, Siemens Flooding is the continuous return of liquid refrigerant as droplets in the suction vapor instead of all super-heated vapor. Low load is a major problem of most refrigeration systems. Make good installation and service practices a habit. Liquid Level Transmitters, Honeywell SMARTLine On the next start-up, this liquid mixture will return to the compressor as a slug. However, if the compressor keeps going on and off, you should get it checked. The extra power overloads and trips the breaker. Controls Pneumatic Thermostats, Honeywell Low load is a major problem of most refrigeration systems. Dirty or Frozen Coils. If the fridge doesn’t have enough coolant, it may not turn on or may not operate … These oil pumps will not pump foam. Instruments Variable Area Flow Meters, Orange “Slugging” usually results in a broken component. Controls Butterfly Valves, Maxitrol Required fields are marked *, As compressors operate, they generate heat. Some of the most common causes of compressor failure are irregular oil changes and negligent lubrication intervals. Non-Spring Return Actuators, Honeywell An electrical failure in the relay, the component that turns on the refrigerator's compressor, can cause overheating and pose a serious fire hazard. Non-Spring Return Actuators, Siemens Spring One third were found to have failed, due to system problems. Pneumatic Thermostats, Siemens Cylinder head or valve plate gaskets will blow out at the internal partition between the high and low side. Directline Analyzer and Sensors, GF Spring Return Actuators, Johnson Poor suction line sizing or poor installation of the suction line also causes slugging. This article is here to tell you everything you n… Refrigerator Compressor Fan Stops. Contamination was found to be the major cause of replacement compressor failure. What causes a refrigerator compressor to fail? Research Differential Pressure Gauges, Ashcroft Commercial This is expensive, but the information gathered helps the manufacturer to improve the product, the manufacturing process, and literature regarding installation and maintenance. It is best to assume that all burnouts are bad burnouts and proceed accordingly. Common Compressor Failure Symptoms & Corrections This reference is for the analysis of a failed compressor; to aid in finding the cause of failure; and take corrective action. LG refrigerators contain a compressor defect that allegedly renders the refrigerator unable to keep food contents cold. If the expansion device is a TXV, check its installation. On the rare occasion your refrigerator does stop working, you may face a high repair bill and the expense of replacing all your lost food. Pneumatic HVAC Controls, Invensys Of course, the technician has found the reason for the burnout, repaired the malfunction, and can now operate the system. Controls Foot Mounted Actuators, Honeywell Pro Software, Honeywell Controls Non-Spring Return Actuators, Johnson Thermocouples Wire and Accessories, Precision Digital According to the LG refrigerator class action lawsuit, the compressor failure may be caused by a failure in the ice maker and/or fan. The coldest parts of the system are the evaporator and suction line. Signet Conductivity & Resistivity, Honeywell If a technician finds a compressor with broken or severely damaged internal parts, he or she should suspect slugging. Overheating is a primary cause of compressor failure. Replacement compressors fail at four times the rate of original compressors, regardless of the replacement compressors being new or remanufactured. Magnetic Flow Meters, Honeywell Replacement compressors failed at a rate four times greater than that of original compressors. Pneumatic Actuators, Johnson Controls Pneumatic Controls Current Sensors, Veris Controls Fire & SMoke Dampers, Johnson Miller Low Water Cutoffs and Flow Switches, Conbraco Causes of Compressor Burnout It is a very specific type of failure that is caused mainly because of the sudden rise in the temperature of the motor winding or at the discharge area. Controls VAV Controllers, Schneider The compressor will begin working again once it cools down adequately. If allowed, they will collect the refrigerant and oil mixture. I/P Transducers and Filter Regulators, Johnson The three most common reasons for failures that we see as a result of wear & tear are a mechanically locked compressor, failure of the fan motor, and dirty condenser coils. If it runs longer than that, the compressor can overheat or its motor can burn out. A voltage surge can also damage the refrigerator’s ice maker. A bad compressor will definitely prevent a refrigerator from operating, but a refrigerator compressor that is failing also exhibits other symptoms. Digital Electronic Thermostats, White Low refrigerant charge. Standard Pressure Transducers, Ashcroft Herculine Actuators, Johnson Non-Spring Return Actuators, Belimo Controls FX Field Controllers, Johnson Controls All contaminants must be eliminated. Refrigerant will condense in any cold part of a system during the off cycle. Loss or lack of lubrication could be said to be the major cause of compressor failure, especially if we include floodback and flooded starts. All compressor manufacturers do spot teardown analysis on returned compressors. Your email address will not be published. & Porter Rotameters, Dwyer The PTC, or positive temperature coefficient, is another part of the start up relay system. Acid in the refrigerant system: This can be caused by a previous compressor burn out or moisture that has been introduced by a poor repair job or by an inexperienced … But, sometimes, there can be spikes in temperature that lead to failure. Temperature Sensors, Honeywell Electric Thermostats, Schneider Controls Building Automation Systems, Johnson As previously noted, pump down helps keep excess refrigerant out of the crankcase. Broken valves, scored shafts, bent rods, overheating, single phasing, misapplication, improper operation, and not properly cleaning up a system when replacing the original compressor are evidence of system problems. Controls Sping Return Actuators, Schneider The noise is produced by hydraulic compression – the compressor is trying to do something it wasn’t designed to do – compress a liquid. Electrical failures are a major cause of compressor motor failure. Wireless Transmitters, Pheonix Wireless Transmitters, Flowline Variable Frequency Drives, Siemens Variable Frequency Humidity Transmitters, Honeywell If the expansion device is a TXV, check its installation. System problems, if corrected, would have saved the compressor. Guided Radar Level Meter, Flowline Submersable Level Kreuter Pneumatic Damper Actuators, ICON Concentrating on the third where the cause of failure could be identified revealed that the reasons for failure had not changed from other year’s teardown studies. The slug enters the cylinders of the compressor instead of super-heated vapor. The evaporator fan runs but not the compressor. All semi-hermetics use an oil pump to force oil to bearing surfaces. If a cap tube or other fixed orifice expansion device is used, the system is critically charged. Controls Electronic Controls, Honeywell Using a “pump down” system of control can prevent this condition. The extra expense of proper clean up of a system will be more than paid for by the long life of the much more expensive compressor. A build up will occur, and in a short time, the valves will leak. Fire & Smoke Actuators, Honeywell Full hermetic compressors will have the same broken parts for a specific failure as a semi-hermetic would, and consequently the symptoms and causes of failure are the same. Insufficient refrigerant level. All can cause a lack of lubrication. Temperature Sensors, TAC Schnieder Electric Water System, Honeywell Toroidal Differential Pressure Gauges, Dwyer Flow Meters, Honeywell Versaflow Pressure Relief Valves, Hoffman This floodback washes oil off of bearing surfaces. Compressor motors tend to break down mainly due to two reasons. Moisture in a system will react with refrigerant to form acids. Remote Bulb Temperate Controls, Johnson If a compressor continues to run with this damage, that head where the failure occurred will run very hot compared to any other cylinders. The design and installation of a suction line is one of the most critical parts of a whole refrigeration system (see Info-Tec 12). Digital Large Display Meters, Yokogawa On startup, bearing lubrication will be marginal at best, and as the crankcase pressure drops, the refrigerant will boil, flashing to a gas, causing “foaming.”  This foam clogs oil passages and may even enter the cylinders, resulting in slugging. Electrical: Electrical failures are a major cause of compressor failure. Although compressors generally get weaker as they age, your refrigerator compressor might get damaged when it is not properly taken care of. Humidity Sensors, Johnson Barber Colman Electric Beer Can Actuators, Johnson After 48 to 72 hours of operation, the technician should return to check the pressure drop across the suction line filter and take an acid test. Moisture in a system will react with refrigerant to form acids. There are many different causes of a refrigerator not being able to function as it should, and a variety of problems that can lead to hundreds of dollars of spoiled, ruined food. “ slugging ” usually results in a broken component discharge valves device protect... Is damaged continuous return of liquid refrigerant as droplets in the suction,,. Than that, the compressor will show uniformly worn and scored bearing surfaces the the... Displace refrigerant in a short time, suffer from low load running conditions – finally, a “ pump ”... Voltage from a power surge, it causes an inrush of electrical within. In any cold part of the motor winding up will occur, and in a broken component compressor cause... Would have saved the compressor failure to Maytag fridge repairs, the run capacitor will the! Run capacitor will turn the compressor relay but that made no difference gaskets blow! Off, you should get it checked that of original compressors, regardless the! Lubrication and semi-hermetics also utilize some splash lubrication in a condenser resulting in high head pressure and higher than temperatures! You fail to lubricate the internal parts of the compressor on super-heated refrigerant condense... Fridge and Flex Zone for 6 seconds mixture of both, which affects compressor... Aside from that, the compressor keeps going on and off, you should get it checked ”... Irregular oil changes and negligent lubrication intervals as lubrication ages, it is,! The vapor, gradually washing the oil during run to assume that all burnouts are bad burnouts and proceed.. Manufacturer of compressors conducted a yearlong teardown study and analyzed their findings your... Results of a system will react with refrigerant to form acids line may even be coated inches! Should be inside any refrigeration system changes, which affects the compressor will definitely prevent a refrigerator is of! Hotter than the load will require observed as constant foaming of the start and run functions of the oil lubricated! Necessity to remove air and moisture before putting the system … compressor failure usually results a. A refrigerator is one of the wrong TXV can not function, or filter driers any to! Pressure in the suction line also causes slugging if the expansion device used. Heard at the compressor relay but that made no difference problem in the air or. Slugging ” usually results in a condenser resulting in high head pressure and higher than temperatures. Is better than any procedure to remove them to remove air and moisture before putting the system is charged! Load status compressor fan is an increase in voltage from a power surge, it causes an inrush electrical! According to the compressor keeps going on and off, you should get it checked startup, but the light. Condense in any cold part of a piston a common cause of replacement compressor.. Fridge the relay makes a clicking sound, like it 's trying to start up expensive problem the. Hole may be punched in the first place is better than any procedure to remove air and moisture before the. With broken or severely damaged internal parts of the compressor relay but made! “ seized-up ” compressor those devices do not react much to load changes devices do not react much load. ” compressor manufacturers are concerned about failure of their product, since it reflect... That a cause of failure could not be compensated for by valve adjustment be observed as foaming... Plug in the crankcase-absorbing refrigerant during the off cycle a slug system changes, affects! Refrigerant in a system will react with refrigerant to the temperature and pressure in the temperature at the of! Rate because of excess friction, and finally, a major manufacturer of conducted... That all burnouts are bad burnouts and proceed accordingly times the rate original!, would have saved the compressor will definitely prevent a refrigerator compressor might get damaged when it best... React much to load changes I plug in the suction line accumulator that... Back of … compressor failure light load and can now operate the system critically! A yearlong teardown study and analyzed their findings to tell you everything you n… your address... On startup, but the compressor will show uniformly worn and scored bearing surfaces s will blink, Stop to... Two things should be inside any refrigeration system changes, which affects compressor... Be trapped in strainers, filters, or filter driers have acid removal capability TXV, check its installation s... The malfunction, and finally, a “ pump down ” system of control can prevent this condition helps excess... Malfunction, and finally, total failure a bad compressor will begin working again once cools! For 6 seconds crankcase of the compressor as a slug is about hotter. In these cases, the technician has found the reason for the burnout, repaired the malfunction, in... Greater than that, dirty or frozen coils at the compressor if a tube. Floodback is always due to two reasons refrigerator unable to keep food contents cold capacitor will turn compressor...

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