The first step in the repair is to disconnect the contactor and wires. Use a multimeter, which can be bought at any hardware shop, to measure current flow through the contactor. Next, connect the low-volt terminals from the multimeter to both sides of your contactor. If readings are low, the contactor may need to be replaced. Re-connect the wiring, replace the contactor. After the repair has been completed, be sure to shut off the power source to your air conditioner.
A thermostat is a good way to check if the contactor is working properly or needs to be replaced. A working thermostat is essential for an AC unit to work. It sends a signal to the compressor to turn on. The thermostat signals when it is time for the compressor to start. A bad contactor causes the thermostat to close and shuts off the AC unit. A thermostat is an essential part of the cooling system. However, if it fails to work correctly, it could lead to an oil leak or even electrical shock.
It could be an indication that your capacitors are failing if your home conditioner makes clicking or buzzing sounds. The easiest way to check is to push the fan with a long screwdriver or thin stick. You can replace the capacitor if the fan stops spinning. A malfunctioning capacitor can also cause clicking, humping and ice buildup around the evaporator. A technician may be able to repair your home conditioner if none of these symptoms are present.
Look for HVAC companies with good reviews in online and local stores. Once you have a short list of candidates, look at the reviews. Google may allow you to view the company's Google Business page. Here customers can leave feedback and post reviews. Hire only a company that has a written contract. It can be difficult to find warranties and loopholes.
To clean the evaporator coil, you can also use compressed-air. You can start with the areas with the least soiling, and then work your way up to the most contaminated. Although a sweep should suffice to remove most dirt, it is possible to hold the compressed air can close to certain areas to make them easier to clean. Because the fins are very thin, it is important to keep the air moving at a distance of three feet or less.
In order to check for ice buildup in air-conditioning repairs, it is possible to clean the coil and inspect the filter. This will keep the air moving through the AC unit, and prevent buildup. It also prevents water and debris getting in the air. Regularly changing your air filters is a good idea to prevent ice buildup. Your AC system can be damaged if your filter isn't effective at keeping ice out.
Regular maintenance can keep your air conditioner working properly and lower your repair bills. Depending on the type of system, the cost for a visit can vary from $75 to $200. Annual contracts can be more cost effective for larger units. HVAC service costs are typically higher in the summer, but can drop significantly in winter. One visit to a typical central heating and air conditioning system will cost around $100. A year-round service could cost from $150 to $400.