Your home or business HVAC system is essential to your comfort and wellbeing. Unfortunately, most McKinney, TX, homeowners experience problems with their air conditioning units from time to time. If your air conditioner won’t turn on, there are a number of steps that you can take to identify and solve the problem. Remember that some HVAC problems must be handled by a professional to ensure your safety and the integrity of your cooling system. AC Won’t Turn On: Common Problems Most modern air conditioners are designed to offer up to 10 to 20 years of reliable use. However, even the most reliable of air conditioners may stop cooling or suffer from problems from time to time. Remember that one of the best ways to prevent unexpected A/C problems is to have regular maintenance performed on your unit. If you cannot perform the maintenance yourself, hire a professional to do so. Spending money on maintenance now can save you from big repair bills in the future. Some of the most common AC problems are listed below, and they may even be the reason why your air conditioning unit won’t kick on.

Review this information so that you know how to best troubleshoot problems with your unit. Be sure to determine whether your unit has shut down entirely or whether only a part of your unit has shut down or isn’t working. Remember that it is always necessary to cut power off to your unit before inspecting it for wiring-related problems. The AC unit does not cool rooms evenly: Inspect your unit’s distribution channels. Make sure that the fan on your unit is kicking air into rooms or into your duct system. The AC unit turns on but doesn’t cool: If your unit turns on but doesn’t cool, check your thermostat to be sure that it is set at the correct temperature. You should then check the condenser and evaporator for dirt and clogging. If too much dirt builds up, your unit may not turn on at all. The condenser unit returns on and off repeatedly: Having a unit turn on and off repeatedly is extremely frustrating. In general, this problem is caused either by a dirty condenser and fan or a clogged condenser.

The condenser unit won’t turn on: If your condenser unit won’t turn on at all, you may have a faulty motor or the unit may not be receiving power. Examine all wiring and ensure that the unit is plugged in. Common Causes of Air Conditioner Problems Common AC problems can be frustrating. However, there’s nothing more frustrating than when your air conditioner won’t turn on. Review the following common causes of serious AC problems. You will need to consult with a professional technician in order to address most of these problems.loans for ac unit Wiring problems: Problems with the wiring in your unit or the wiring that runs from your unit to an outlet are one of the leading causes of air conditioner breakdowns. cost of replacing ac unitIt’s a good idea to check the breakers in your house’s power box and adjacent outlets to ensure that the problem lies with the air conditioner and not other electrical components.parts of window type air-conditioning unit

Icy buildup: If ice collects of your condenser coils or other portions of your unit, the AC may not turn on or may not cool air efficiently. The unit must be dethawed and all ice must be removed before it will operate properly. Faulty motors: In most cases, your A/C unit will shut down entirely if its motor is faulty. You will need to decide if your motor can be repaired or if it must be replaced. Faulty compressors: Problems with your compressor may cause your A/C unit to shut down. Keeping your compressor clean can help to prevent these problems. Dirty evaporators, filters or condenser: Dirt and buildup in an A/C system is one of the leading causes of breakdowns. Be sure to have your unit serviced on a regular basis to prevent these problems. If your unit has filters, they should be changed according to the manufacturer’s schedule. Refrigerant shortages: If your A/C unit doesn’t have enough refrigerant, it may not turn on or may not operate correctly. You should always have a professional technician check refrigerant levels and change these fluids.

Faulty thermostats: Be sure to eliminate the possibility that your unit won’t turn on because your thermostat is faulty. If you suspect that your thermostat is bad, try turning the A/C on from the main unit. If the unit will turn on manually, you are likely suffering from a thermostat problem. Resolving Air Conditioner Problems: Repair or Replace? How do you fix an AC unit that won’t start? If your air conditioner simply won’t turn on, you’ll need to decide if you should repair or replace the unit. Remember that units over 12 years old should generally be replaced with more efficient units. If the AC cuts on and off before your home is cool or your hvac unit won’t shut off, you may need a repair. However, you should carefully evaluate repair costs before making a final decision. If repairs will cost more than 50 percent of your unit’s overall value, it is better to replace the unit. Solving air conditioner problems quickly is absolutely essential, especially in warm spring and summer months.

At Bill Joplin’s Air Conditioning & Heating, we focus on providing for the air conditioning needs for both residential and commercial customers throughout the McKinney, TX, area. We will be happy to help you whether your air conditioner won’t turn on or you are interested in having a new HVAC system installed. Ensuring your comfort is our top priority.The Importance of RV AC MaintenanceThe rooftop air conditioners used on motorhomes are made to give many years of dependable cooling efficiency. But in order for the AC to operate dependably each season, it is necessary to keep the rooftop AC unit on your motorhome clean and properly maintained. Occasionally the motorhome rooftop AC needs repairing and this article will assist you in knowing which parts of your RV AC to replace or service.These repair and maintenance tips are very simple to follow, even for those with less than good hands-on experience. If you are unfamiliar with how a motorhome air conditioning system works, this article will help you understand which parts of the motorhome rooftop air conditioner unit to check, service, and repair.

Condenser and Evaporator Coil MaintenanceRoof air conditioning units are the same as ones used on other types of RV campers such as travel trailers and pop-up campers. Your motorhome AC system may have one or two units to help keep the camper cold, or warm if the RV AC units have optional heat elements. These repair and maintenance procedures are identical for all types of the aforementioned campers.After a few seasons of use, it isn’t unusual for the AC unit(s) to not cool the motorhome as quickly or as efficiently as it once did. Even though you have kept the filters clean on a regular basis, the evaporator and condenser coils will eventually become coated with dirt and grime which inhibits airflow and cooling efficiency.Before attempting any maintenance or repairs on the rooftop AC unit be sure to switch off the electrical supply to the unit, either by tripping the breaker or by unplugging the motorhome from the electrical receptacle. You are now ready to remove the RV AC shroud by unscrewing the four bolts securing it to the RV AC unit itself.

Cleaning Your RV AC Coils How To Clean The RV AC CoilsAfter removing the AC shroud you will be able to see the evaporator and condenser coils on either end of the RV AC unit. If they appear similar to those in the photos at the right then they need a thorough cleaning. to allow unrestricted airflow through them. A good wet/dry Shop Vac will help to keep you from making a big mess during the cleaning regimen.Although regular household cleaners may clean the coils to a certain extent, AC coil cleaners made especially for the purpose will remove the grime build-up much more efficiently and will not harm the coils themselves. Several types of these fine products may be found on this page.Follow the instructions carefully for the best results and use the Shop-Vac to remove any excess cleaner or grime from the RV AC unit. Use a coil fin comb to straighten any bent fins because they too will keep the airflow from moving through the AC coils efficiently. These fin combs are very inexpensive and may be used many times in the future on both RV and home AC coil fins.

RV AC fan motor Replacement RV Rooftop AC RV AC Fan Motor maintenanceWhile the RV AC shroud is removed, it is a good time to service the fan motor and clean the fans themselves. Whether your RV AC unit is made by Coleman, Carrier, Duotherm, or Dometic, it will have one fan motor which turns both the squirrel cage fan and the heat exhausting fan. This motor should be oiled at this time.If your RV AC fan motor has regular bearings in it there will be oiling ports at each end of the motor. It may be necessary to remove the top metal sheeting from over the fan motor to access the bearing oiling ports. A few sheet metal screws will have to be removed to allow you access to the bearing ports add oil to the bearings. If no oil ports are evident, then your rooftop AC unit has sleeves instead of bearings. You may still oil the shaft at the point where the sleeves are contained in the fan motor housing. The oil will seep inside and help the fan motor last much longer. A fan motor with sleeves cannot be rebuilt economically, as can the bearing models, and must be replaced with a new one.

Check the ads below to find the right fan motor for your RV AC. Removing and Replacing the Fan Motor Replacement RV AC Fan Motorsmore models available by clicking on this link How To Replace A Motorhome AC Fan MotorIf your AC fan motor is slow to start even after oiling, or needs a nudge to get it going, it will need rebuilding or replacement with a new one. As stated previously, a bearing model fan motor may be rebuilt fairly cheaply and will last for many more years. But not so a sleeved bearing AC fan motor. If your unit seems to be in pretty good shape a new AC fan motor may be ordered to fit your particular RV AC unit. Check out the links on this page to find the type of fan motor you need to replace your model Click on the ads to look further on the Amazon site if you do not see your model of fan motor. There are many sizes and models to choose from.Replacement of the AC fan motor is a simple job with only a few tools required for the project. Mark the wire colors before removing the fan motor if the connection isn’t a simple plug-in type electrical connection.

Test the new RV AC fan motor before replacing the AC shroud to check for proper alignment and fan clearance. RV AC Capacitor ReplacementIf the fan or compressor fails to start and the AC unit merely hums or trips a breaker, it is possible the starting capacitor is malfunctioning.  The capacitor stores electricity to give both the fan motor and the compressor an extra boost when the RV AC unit first starts.  It is not unusual for this item to go bad.The capacitor is easily replaced in the event it has gone bad.  Note the wiring before removing the old AC capacitor and install the new capacitor in the same manner.  Your AC unit should now start and run fine.  Check the required voltage and model numbers on the new AC capacitor when ordering a new one. The RV AC Compressor A/C Coil Fin CombStraighten out those bent coil fins and increase the efficiency of your A/C unit. RV AC Compressor ProblemsIf, after determining the switches, capacitor, and relays are not at fault, the RV AC compressor fails to operate correctly it is usually better to just junk the unit and buy a new one.

Unless you have access to a used compressor and have the means to replace it and recharge the system yourself, it will be too expensive to repair in most cases. Under normal circumstances the compressor will last much longer than the warranty covers. The thermostat and switches may be purchased online by finding the correct model and serial numbers before ordering the new parts. These items w\are very easily replaced in most cases. Pay attention to the wiring connections as always when replacing these electrical components. RV AC Protective Covers for Motorhomes Protect Your Motorhome AC Unit In The Off SeasonYour motorhome AC unit should give you many seasons of dependable operation if serviced annually. The use of a cover for the RV AC unit is highly recommended during the times when the motorhome is not in use. These inexpensive RV AC covers protect the unit from being exposed to moisture, extreme cold or hot temperatures, and debris from storms, birds and insects.

They will more than pay for their cost over time.If your RV AC unit needs replacing, please see my article on how to install a new rooftop RV AC unit. Replacing your old unit with a more efficient RV AC unit is a very simple and quick procedure you can do yourself. Don’t be afraid to try these service tips yourself. You will learn much about these wonderful RV air conditioners. More by this AuthorCampers & MotorhomesHow to Repair or Replace RV & Camper Trailer FloorsDutchman RV floor repair guide. Over 100 questions and answers for all types of motorhome or travel trailer floor repair procedures. Campers & MotorhomesTroubleshooting, Repairing, and Replacing an RV Camper Power ConverterTips for how to troubleshoot, repair, or replace the power converter in an RV, camper travel trailer, or motorhome. FAQs and answers to common camper electrical problems. Campers & MotorhomesHow To Repair, Remodel, & Restore, Old Camper Trailers, Motorhomes RV InteriorsThis article is intended for those who wish to remodel or repair older RVs and travel trailers.