Troubleshoot Compressor Overload

30 Gasket, Roof 3108678. Used refrigeration systems with or without run capacitors. The compressor is found at the lower rear of the freezer, with the exception of the high-end, built in style refrigerator-freezers on which the compressor is usually on top. If your refrigerator stops producing cold air, there may be something wrong with the PTC (positive temperature coefficient) relay, also known as the start relay. I have the iom but not the diagnostic Troubleshooting and. Check emergency stop is out. REFRIGERANT FLOODBACK This is a result of liquid returning to the compressor during the RUNNING CYCLE. Proper corrections will help eliminate future failures. Then dismantle the junction box cover. Then set you multi meter on connectivity test or diode testing. This allows the motor to restart freely. To view our complete privacy statement and manage how cookies are used based on your preferences, please read our privacy policy and cookie policy. What amp reading should one expect on a refrigerator compressor without a working start relay? out on overload within a few seconds. This happens when there is an electrical fault within the appliance. Using the adjacent up and down arrows, the values displayed will be those immediately preceding shutdown. Then the system is back up and running - temporarily. If you don’t hear your compressor coming on at all, a broken compressor motor is probably behind it. Find many great new & used options and get the best deals for GE Refrigerator Parts Compressor Relay Overload Starter WR07X10097 (513604045) at the best online prices at eBay!. Troubleshooting a Magnetic Contactor, Overload Relay, and Push Button? 02/21/2008 5:02 AM i tested it using a multi tester and all deflected but when i applied current it didn't run. Compressor Run Capacitor Time-Delay Relay (Shur Start only) Terminal Block (If Used) Start Relay (Potential Relay) Start Capacitor Electrical Box Cover Junction Box Cover Electrical Box Compressor Overload Protector Compressor Mounting Grommet Compressor Mounting Bolt Close-Off Plate (Set of 2) 54812-042 55712-041 54815042, -044 55812-041, -042. Compressor oil charge is too low or line is set too long. Overload protector open. Where ever there is a connection to a wire there is a potential problem. been working on semi hermetic copeland 1-1/2 horsepower compressor that was tripping out on overload. Try to start the unit. The good news is, as much as 80 percent of the causes of AC compressor failure are preventable if the problems leading to the failure are corrected in a timely manner. My air compressor will not shut off! What on earth is the problem?. The following air compressor troubleshooting tips can help solve some of the. There are many types of air compressors in use around North America, and though many of them look different than other air compressors, and they certainly vary in size and other area, there are similarities. There is one cylindrical stator and a three phase winding is symmetrically distributed in the inner periphery of the stator. Rated for 1/4 HP to 1/3 HP compressors. Either an electrical problem, or the compressor has tripped on a safety device. If the compressor overheats, it will break or shut itself down. IndustrialAirCompressor. The clicking noise is the overload cutting the compressor off when it overheats from trying to start with a bad start relay. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 9 HP heavy-duty induction motor helping to ensure trouble-free operation with an easy start and the ability to drive high-pump performance. For further help, you’ll want to call a professional appliance repair technician. The thermal overload protector is connected or install near with the starting (PTC relay) with compressor terminals. 2 Possible defective compressor. They divide the MCC by 1. Moving the switch to the OFF (0) position will remove power from the pressure switch and stop the air compressor. Used refrigeration systems with or without run capacitors. Using the adjacent up and down arrows, the values displayed will be those immediately preceding shutdown. Compressor Short Cycles. Bryant air troubleshooting may be easier than you expect. IndustrialAirCompressor. IoC is a universal concept that enables HVAC systems to be controlled, serviced, optimized, and managed remotely. A compressor on thermal overload could eventually be a shorted compressor. For this to protection to be triggered, the measured current draw of the compressor would have to be about 10% or more above the running load amps (RLA) for some period of time. note the color code. Wrong fuse size. Check supply power. Then take the cover off that is on the side of the compressor. All “C” model VIAIR compressors (except certain 90 & 100 series units) are equipped with a stainless steel braided leader hose and a check valve to keep the compressor from restarting under pressure which can create an amp draw spike and can cause motor damage. l Overload l Compressor ELECTRONIC CONTRO L l Wiring Fan operates: compressor l Overload will not come 'on (does not l Compressor hum). Clean the mating surface and replace all of the overload heaters. Contact the air compressor repair manufacturer to buy a new assembly. With a DMM on the Ohm scale or a continuity tester. I have had a Harbor Freight 21 gallon air compressor for about 3 years. "Trane Crash" I bought a new Trane XL14i heat pump system in 2007. An overload relay will stop the unit if the motor becomes overheated. The overload protects the compressor from burning out if it draws too much current. No problems to complain of at all and use it more than an average homeowner, but far less than a professional. At 60 amps the display was showing 60%. Prevents low voltage starting problems; Replaces relay, overload and provides a boost for hard start and unbalanced. I see these problems most often every summer in our 27 year old HVAC business. What amp reading should one expect on a refrigerator compressor without a working start relay? out on overload within a few seconds. Read on to learn how to test a refrigerator compressor. Read on, please. A broken relay—which may rattle when you shake it or have burn marks—can keep the compressor from running. I was measuring 122 Amps with my amp clamp and the display was saying 114%. Read on to learn how to test a refrigerator compressor. High ambient temperature. Compressor rotor locked. SMT max TROUBLE SHOOTING TIPs Problem Possible Cause Possible Solution Pressure drop in the tank. Browse our selection here. OVERLOAD RELAY TRIPPED YES YES Remove overload or adjust the drive components YES START Is there a mechanical overload on the motor? NO Is the proper voltage available at the motor? NO Check for loose connections or single phasing at the motor. overload relay 120v relay Big promotion for : ptc refrigerator overload protector refrigerator 800a car skateboard ptc for refrigerator refrigerator starter qdzh35g air pressur switch 120v relay Low price for : ptc starter booster jump compressor r134a compressor starter golf cart umbrella holder compressor refrigerant relay start compressor. Check supply power. Is there a time limit you will run water over the compressor before you give up and see if it will reset over night? The owner looked kind of mad I was leaving but what was I gonna do on a Friday at 5PM, stand there all night running water over a compressor that for all I know may have had a broken internal overload?. Having the replacement compressor fail due to an unresolved system issue is not good for the technician, his company, or the customer. This vertical air compressor can be connected to a variety of air hoses with a built-in universal quick-connect coupler. If there is a reading between run and start, and no reading between common and start and common and run the internal overload is open. These tools are less expensive than their electrical counterparts, which makes the purchase of an air compressor an economical choice for anyone needing to use these types of tools on a regular basis. • Bearing problems. Replace compressor if faulty. The compressor circulates refrigerant through the unit to remove moisture from the air, which collects in the bucket. He pretty much indicated to me that his techs really don't have any high tech tools to diagnose these problems & shotgun it (that really makes me feel good paying $90 for a service call). You've just received a call from a new client who has a problem with a production chiller. Check that all wire connections are secure. How do you troubleshoot a thermal overload relay? Answer. The overload protects the compressor from burning out if it draws too much current. Cruisair marine air conditioner troubleshooting is the first helpmate for specialists while repair works of these high-tech machines. Correction 1. You can check the overload protection on your central air conditioner with basic electrical know-how. com FREE DELIVERY possible on eligible purchases. AIR COMPRESSOR TROUBLESHOOTING PROBLEM POSSIBLE CAUSE POSSIBLE SOLUTIONS Pressure drop in the tank Air leaks at connections Let the compressor build pressure in the tank, to get the maximum pressure if possible. Turn off the air compressor, unplug the power cord and wait until the motor has cooled down. Specifications. A compressor that is working should turn on audibly and feel warm to the touch. Small units like that does not have a low pressure cut out like a car does. 30 Gasket, Roof 3108678. Online Loan Credit Score Of 614. What amp reading should one expect on a refrigerator compressor without a working start relay? out on overload within a few seconds. Free expert DIY tips, support, troubleshooting help & repair advice for all Air Tools & Compressors. → Examine the compressor to verify proper voltage supply. With a DMM on the Ohm scale or a continuity tester. The compressor is locked and will not start. Forum discussion: Okay, I was given a Duotherm rooftop A/C for a RV. The start winding can be open, in which case if power is available, the motor will not start, the run winding will overheat and the internal overload will shut down the power. 9 SCFM @ 90 PSIG 6. Troubleshoot compressor issues A compressor showing locked rotor amps may show some of the following symptoms. If it’s a new installation, check the phase sequence. Free expert DIY tips, support, troubleshooting help & repair advice for all Air Tools & Compressors. Turn the compressor off and allow the motor to cool if the compressor suddenly stops in the middle of operation. Compressor overload relay trips. The start relay boosts the compressor, and then shuts off as soon as the motor gets up to speed and the overload provides extra protection against excessive temperatures. all have overload devices built in that would shut anything down it were running under stress. When fault occur, The display of Gree AC will show Error Code. GE Appliances is an appliance company headquartered in Louisville, Kentucky. 2. Remove the clamp that is used to fix the junction box of compressor. Faulty components – See if the relay, overload protector or capacitor are broken. If you are looking to find your Elkay repair parts quickly and easily, you’ve come to the right place. The company focused its attention on provision of non-sound operation, superior air distribution, features of rational use of energy, simplified installation, and reduction of load on a. Being that the scroll is a refrigerant cooled compressor, checking the superheat at the compressor would be beneficial. Maximum RLA 6. Correction 1. Get an extension cord with #14 or heavier wire and plug the compressor into another plug that is on a different breaker. If it’s a new installation, check the phase sequence. It continuously senses the current that the electric motor draws. How do you troubleshoot a thermal overload relay? Answer. thought old compressor was bad, but still doing with new one. Troubleshooting Tripped Circuit Breaker. Prevents low voltage starting problems; Replaces relay, overload and provides a boost for hard start and unbalanced. Low on refrigerant 1. 5 Cut-In Pressure 110 PSI Cut-Out Pressure 140 PSI Bore 47 mm Stroke 44 mm Voltage -Single Phase 120 Motor RPM 3420 Amperage @ max pressure 13. Every air conditioner has a motor inside a compressor. The beating heart of a central air conditioning unit is the compressor. 70-125 Ton Air-Cooled and Water-Cooled Rotary Liquid Chillers. make sure the compressor is cool to the tough and make an ohm reading between common and start, common and run, and run and start. If there’s not enough pressure at the point of use, the problem is likely due to air restrictions, leaks or problems with the hose or compressor belts. Plug the compressor into your laundry outlet. This allows the motor to restart freely. Some compressor manufacturers, such as Copeland, use a different factor. By turning off your system to allow the compressor to cool, this can prevent AC compressor thermal overload and alert you to problems before they become costly. Compressor Clicks On and Off. If the motor draws excessive current: Try to turn the compressor by hand. The overload relay is also often called the ‘thermal block’ or ‘thermal relay’. At 60 amps the display was showing 60%. The cooling power of the freezer also depends on the functioning of the Evaporator coils. 1 ” “If a compressor fails prematurely (<15 years old), first consider why the unit died in the first place. Though it may sound just a simple part of any refrigerator, compressors are quite expensive. Its main responsibility is to receive low-pressure gas from the evaporator and converts it to high pressure gas. air from the air compressor pump head and its discharge line when the air compressor reaches cut-out pressure or is shut off. Deprecated: Function create_function() is deprecated in /www/wwwroot/autobreeding. This Elkay 31039C Compressor Overload Relay is a direct replacement part manufactured by Elkay. Small units like that does not have a low pressure cut out like a car does. Automatic pool vacuum causing restriction. Wrong filter pump pipe size. How to Test a Refrigerator PTC Relay. Power is applied to the compressor motor windings through the overload device, and the relay is used to add the start winding in the circuit until the compressor is at running speed. Check the current draw with a current clamp meter. This will be indicated on the control display. The fuse and circuit breakers in the Yukon XL prevent damage from occurring to the AC components by blowing when there is an overload of voltage. Start Relays – As with the capacitor, the HVAC technician may try replacing the start relay, which is the only surefire way to determine whether it’s working right or not. Thank you for your question. Replace valve plates 4. The 90 ton compressor fla is 133. Usually a/c problems are electrical problems. At Freedom Heating and Cooling, we have dealt successfully with all of these problems. Getting your refrigerator to run without a start relay while you wait for the part Posted by Admin • Monday, January 19. If it stays on then the overload might be bad and just needs replacing and not the starter. Expert advice on how to repair a dehumidifier that doesn't work, does a poor job of dehumidifying, or has other problems. Faulty components - See if the relay, overload protector or capacitor are broken. Clean the mating surface and replace all of the overload heaters. The oil is diluted with refrigerant to the point it cannot properly lubricate the load bearing surfaces. the thermal overload protector will shut it down in order to prevent the motor from being damaged. All “C” model VIAIR compressors (except certain 90 & 100 series units) are equipped with a stainless steel braided leader hose and a check valve to keep the compressor from restarting under pressure which can create an amp draw spike and can cause motor damage. The issue above should be addressed immediately for its risk, or it may become chronic problem. Problems with Motor. AIR COMPRESSOR TROUBLESHOOTING: SPECIAL NOTE ABOUT TROUBLESHOOTING-It is up to you to not only read all the information about your problem, but it is also your responsibility to make an informed decision. Relay and overload why use in Refrigerator Compressor Relay is Necessary for every refrigerator Compressor Some relays and overloads combine and some overloads and relays are separated. The magnetic starter on an air compressor does the same thing as that starter solenoid on a car. Then set you multi meter on connectivity test or diode testing. Deprecated: Function create_function() is deprecated in /www/wwwroot/autobreeding. Issue: Air compressor shuts down If a shutdown occurs, press the DISPLAY SELECT button once to activate the display table. It should turn around smoothly, without any 'hiccups' (be sure to completely shut down the air compressor!). Vinotemp offers the best in wine storage, wine coolers, wine cooling systems and other accessories. air compressor, relieve pressure and unplug the air compressor from the power source. How To Test the Overload Protector. If it does, it will indicate the starting device has failed. The overload relay is a protection device used in the compressor circuit on your refrigerator. It ran fine at the previous shop and then we moved it to this shop. Also, remember to relieve the system pressure before removing parts or breaking any lines. Then the system is back up and running - temporarily. There are also many links to items within our online store. Once confirmed, the overload can be reset. This compressor has a thermal overload device. The failure of the refrigerator symptoms of refrigerator compressor problems In the category electric appliance repair Many people are interested in knowledge and learning about many subjects, this knowledge may be vital at some point in your life, attention enough, and dive into more detail in regards to The failure of the refrigerator symptoms of refrigerator compressor problems. Find LG Refrigerator Compressor & Sealed System Parts at RepairClinic. Turn on power, check fuse, breaker, or motor overload. Overload Relay Failure. Liquid line solenoid valve not holding (Model CC-20 Ton and up) 2. By using the compressor as a sensor, CoreSense Diagnostics helps the service technician more accurately troubleshoot system and compressor fault conditions. Proper corrections will help eliminate future failures. Troubleshooting. The air conditioner compressor may fail in case of an overload or if it overheats. If your air conditioner or heat pump unit is the culprit that caused a tripped circuit breaker in your house or office, there are a few possibilities why this happen. TOPS - Thermal Overload Protection System Air Compressor pdf manual download. Another potential scenario is a compressor with a defective start or run capacitor. Overload protector open. Other problems result in a mechanical or electrical problem with the systems that need to be resolved. This DIY repair guide explains how to replace the compressor start relay on a freezer. • Replaces relay, overload and provides a boost for hard start and unbalanced systems • Prevents low voltage starting problems Applications • Select the right match to replace refrigerator compressor relay and overload units from 1/12 through 2/3 hp, 115 – 230 VAC. If the motor overload(s) trips again, return to Step 5 of "Troubleshooting voltage source problems" to determine if the problem is a motor problem or load problem. Proper corrections will help eliminate future failures. AIR COMPRESSOR TROUBLESHOOTING: SPECIAL NOTE ABOUT TROUBLESHOOTING-It is up to you to not only read all the information about your problem, but it is also your responsibility to make an informed decision. The compressor is a vital and expensive component, and when it goes you may find yourself dropping a lot of cash on a new AC unit. NOTE: Ensure compressor/ overload are below trip temperature before testing. Dear User,This website uses technical cookies and third-party cookies, including for commercial purposes. Our expert staff and technicians welcome the opportunity to help you solve problems with your compressed air system, please email us or call us at 1-800-322-9038 for assistance. To determine if the overload is burned out, use a multimeter to test the overl oad for continuity. Motor Overload Protector is usually found on the compressor terminal adjacent to the SCR. I was measuring 122 Amps with my amp clamp and the display was saying 114%. Relay and/or overload faulty. Plug the compressor into your laundry outlet. Unit too close to the wall giving poor air flow. Problems include failure to maintain pressure and compressor failure, both of which can result in expensive losses to the products stored in the cooler. This is the troubleshooting compressor three page, page three of questions and answers. Relay and overload why use in Refrigerator Compressor Relay is Necessary for every refrigerator Compressor Some relays and overloads combine and some overloads and relays are separated. PTCR Fan operates; compressor l Start or run tries to start, cycles OFF capacitor and hums again, or blows l Overload circuit. A manifold gauge set measures refrigerant pressures inside of an air conditioning system. Frick RWF Screw Compressor Manual Repair and Service: FREE SCREW COMPRESSOR INSPECTION Let us determine the extent of your problem, give you a full report, and best plan of action to get your compressor up and running as soon as possible. Sometimes a thermostat, overload or relay is the problem and that is an easy, inexpensive fix. Check supply power. Common rotary screw air compressor problems Compressor will not start You press the start button but nothing happens. Have an authorized technician repair or replace any of these parts. While the basic working principle of any air compressor can be the same, the design of ach equipment is different from manufacturer to manufacturer and from one model to another. Turn on power, check fuse, breaker, or motor overload. safe & sure l&t switchgear. It does remain active monitoring for faults that could indicate a generator overload. Use the Rheem heat pump troubleshooting guides below. If the overload trips again, shutting the pump motor off, it is likely you have a bigger issue. Stops shortly after a1. The overload had reset. It should turn around smoothly, without any ‘hiccups’ (be sure to completely shut down the air compressor!). This is the troubleshooting compressor three page, page three of questions and answers. The complete workings of the whole air compressor is explained. There is a device in the compressor circuit called an overload and it is used to protect the compressor motor from damage. Replace Compressor. 2. Remove the clamp that is used to fix the junction box of compressor. Used refrigeration systems with or without run capacitors. running awhile 2 Compressor overloading 2 Inspect compressor valves and tank valves causing motor overload for carbon build up. Variable torque loads include fans and rotary pumps. Being that the scroll is a refrigerant cooled compressor, checking the superheat at the compressor would be beneficial. By continuing to browse this website, you are agreeing to accept the default privacy and cookie settings. ) Once the overload relay has been tripped, the motor must cool and the red overload button on the motor must be reset be fore the unit will start. Compressor Won’t Start. Turn off the electrical power to the central air conditioner. The overload had reset. Here are some common HVAC compressor problems and what to do to fix them. Normally this compressor 'lives' up in the enclosed garage, and stays up there for things like filling tires. So you pull the relay cover off the compressor, remove the relay/overload and this is what you see. Troubleshooting 9. If this is a home A/C unit, the problem is most likely a dirty filter. The cast iron twin cylinder pump with a thermally stable cast iron twin cylinder body and valve. Online Loan Credit Score Of 614. More than 70 tools are offered by Campbell Hausfeld that can be used with an air compressor. All Troubleshooting. T he overload protector is designed to protect the compressor motor from damage. Our staff has more than 200 years experience collectively! Call (205) 444-4444 and we will be glad to help you. 2) Motor Thermal Overload: Motor has a protective breaker located. It should turn around smoothly, without any ‘hiccups’ (be sure to completely shut down the air compressor!). Plug the compressor into your laundry outlet. Turn the compressor off and allow the motor to cool if the compressor suddenly stops in the middle of operation. I have had the problem before and it has always been stuck valves. If these electrical problems aren’t fixed in a timely manner, it may lead to the compressor shorting out. The Compressor motor stops, when the Overload activates. Bryant air troubleshooting may be easier than you expect. Sold by DIY Repair Parts. requires no attention. Then set you multi meter on connectivity test or diode testing. The compressor is found at the lower rear of the freezer, with the exception of the high-end, built in style refrigerator-freezers on which the compressor is usually on top. To determine if the overload is burned out, use a multimeter to test the overl oad for continuity. If the overload has failed then the compressor won’t start. 2. Remove the clamp that is used to fix the junction box of compressor. 3 Condenser fins in front of the fan are covered with debris. Its currently set to 0. Therefore, motor troubleshooting involves the entire system, not just the. They might be changed or modified by mutual agreement with customer in the future TS/NS. Low on refrigerant 1. polyphase AC induction motors operated within the nameplate ratings will run trouble-free for many years. The overload protects the compressor from burning out if it draws too much current. running awhile 2 Compressor overloading 2 Inspect compressor valves and tank valves causing motor overload for carbon build up. 2) Motor Thermal Overload: Motor has a protective breaker located. The thermal overload protector will turn the compressor off if it is placed in a poorly ventilated area or used in areas with high temperatures. I checked the PTC relay and it has ohm resistance within ratings. Stops shortly after 1 Overload misadjusted 1. This is the troubleshooting compressor three page, page three of questions and answers. HOW TO DIAGNOSE AND CORRECT REVERSING VALVE PROBLEMS Ranco Controls The reversing valve is the same in either case. 2. Remove the clamp that is used to fix the junction box of compressor. Compressor Overcurrent Protection. There is a device in the compressor circuit called an overload and it is used to protect the compressor motor from damage. im fresh grad and this my first job. Troubleshooting Compressor Problems in Refrigerators Video Share Share on Facebook Tweet this Share on Google+ Email this This video from Sears PartsDirect shows how to troubleshoot problems with your refrigerator's compressor. Furthermore, the only visible working parts on the compressor are the electrical connections and the copper discharge and suction lines. If this is a home A/C unit, the problem is most likely a dirty filter. Electrical circuits are designed to handle a limited amount of electricity. 1Jse a starting cord to start compressor direct. On older machines, the auxiliary contact is connected in series with the excitation coil of the main contactor. Fuses blow repeatedly. General Compressor Usage. Shorts in the armature windings can draw excessive current. Browse our selection here. 9 SCFM @ 90 PSIG 6. Where ever there is a connection to a wire there is a potential problem. On older machines, the auxiliary contact is connected in series with the excitation coil of the main contactor. Shut down immediately to avoid damage. Turn off the power to the unit, and check the fan motor and compressor terminals for a grounded, shorted, or open winding, and check the wiring in the unit for burned, shorted, or grounded wires or connectors. Replace valve plates 4. Compressor Won't Start. The compressor start relay helps start the freezer compressor. If there is a reading between run and start, and no reading between common and start and common and run the internal overload is open. ” The overload heater units themselves are black, square-shaped blocks with the label “W34,” indicating a particular thermal response for a certain horsepower and temperature rating of the electric. Pull the connector firmly off of the relay terminal (do not pull on the wire). Air Conditioning and Heat Pump Troubleshooting Simplified This page contains a list of Air Conditioning problems and parts that I use to repair the problems. The compressor is hot, but I can hold my hand on it no problem. If the compressor fails when it is interrupted, the indoor unit's LED flashes indicating the specific trouble code. Tecumseh Relay and Overload Kit Reference August 19, 2010 Relay Kit Part No Overload Kit Part No Compressor Model Old Relay Kit Part No Old Overload Kit Part No AB5513G, H K71-19 AB5515G, H K71-19 AB5517G, H K71-19 AB5519F, G, H K71-19 AEA0418AXA K90-11 AEA1336AXA K90-01 P83541 AEA1338YXA K71-05 K90-03 P83628 AEA1343AXA K71-05 P82654 K90-02 P83480. Air compressor- To remove, disconnect all wire harness connections and 4 bolts holding the bracket cradle that isolates the compressor from the chases of the vehicle. R Series Chiller pdf manual download. The first step is to call the customer and ask for details about what happened, and what indicators or codes come up on the diagnostic readouts (if. Troubleshooting Air Conditioning Compressor Problems. It should turn around smoothly, without any ‘hiccups’ (be sure to completely shut down the air compressor!). It prevents low voltage starting problems and provides a boost for hard start and unbalanced systems. Tecumseh Relay and Overload Kit Reference August 19, 2010 Relay Kit Part No Overload Kit Part No Compressor Model Old Relay Kit Part No Old Overload Kit Part No AB5513G, H K71-19 AB5515G, H K71-19 AB5517G, H K71-19 AB5519F, G, H K71-19 AEA0418AXA K90-11 AEA1336AXA K90-01 P83541 AEA1338YXA K71-05 K90-03 P83628 AEA1343AXA K71-05 P82654 K90-02 P83480. It flashes as many times as the number of the trouble code is. Air conditioners are mechanical devices that are used to cool a room, entire house, or office building. Proper corrections will help eliminate future failures. Refrigerator Compressor Not Running Problems and How to Fix it. If it starts running "normally" again, the compressor is overheating and it should be checked by a repair technician. I have a rooftop Coleman Mach rv air conditioner that the compressor doen't work, I checked voltage and it checks out, how do I check the run capacitor, start relay or compressor windings? or if my compressor is mechanically locked up? Can I un-freeze it?. AIR COMPRESSOR TROUBLESHOOTING: SPECIAL NOTE ABOUT TROUBLESHOOTING-It is up to you to not only read all the information about your problem, but it is also your responsibility to make an informed decision. If you have problems with your Rheem heat pump, don't rush to call for expensive master's help - you can fix your device for free. Verify that the compressor is plugged into an outlet that has the same configuration as the plug.