Thursday, July 4, 2013

Information On AC Repair

By Aaron Bon


An air conditioning or HVAC unit, like any device with electronic and mechanical parts, is vulnerable to wear and tear over a long period of time, especially if the air conditioning repair or maintenance is not given much attention. Ideally, an air conditioning unit needs maintenance work done before the summer season begins. If an air conditioner repair or maintenance is not done correctly, then the likelihood of it getting damage will increase to the point where contacting air conditioning repair professionals or HVAC contractors would become unavoidable. Every time one decides to conduct HVAC unit maintenance, he or she need not forget the fan, thermostat, switch, coils, filters and drain ports so that the machine will do well. If there are problems with these key parts, consider the following AC repair guidelines before contacting AC repair professionals or HVAC technicians. Filter At the beginning of every winter season, remove the front grille and replace or remove the filter. If you dwell in a dusty area, most AC repair experts suggest you replace or clean the AC's filter more often. Most air conditioner or HVAC unit come with a washable filter that appears like a sponge rubber. Clean the AC's filter using a bleach solution and water; wash well. Allow the filter to dry for a few hours before installing it back to the unit. Some air conditioning or HVAC units have a throwaway filter that is indentical to a furnace filter. Whenever this type of filter becomes dirty or blocked, replace it with a new one of the same type.

Power Cord Power cord connecting to your HVAC unit to the outlet, when damaged, will affect your system causing your unit not to run. To check the cord, make sure you remove the control panel. Take away the screws on the cord terminals and get a test wire to connect with it across the lead wires in your unit. Use a volt-milliammeter (VOM) and hook its set of clips to the RX1 scale to the prongs of the plug. When the meter gives you zero, it means that the cord is fine. However, when the result is higher than zero, it is time to replace the cord you use.

Condenser and evaporator coils

Professionals highly recommend that condensers be cleaned or serviced at the start of the winter season and be continued to be serviced every month within the season. However, if your area is quite dusty, you are required to clean the coils more often. Try to use a vacuum cleaner if you decide to clean the coils.

If the fins of the coils are not straight, then you should straighten them using a fin comb, available at most appliance parts departments. The fin comb will slide through the spaces between the fins of the coils and straighten them. When using the fins to the coils, one should be very careful as the fins are made up of light-gauge aluminum which can be very delicate. Switch The selector switch, typically placed behind the control panel, turns the air conditioning or HVAC unit on. If the unit doesn't run at any setting, and it is receiving electricity, then chances are the switch is damaged. To fix the problem, remove the control panel and find the switch. Inspect the switch terminals for burn marks or burnt insulation on the terminals. If you see any sign of burning then replace the old switch with a new one. Switch is hooked to the control panel tightened with screws; remove the screws and attach the new switch in the same manner. If the problem is not in the switch, you should contact air conditioner repair professionals or HVAC contractors.

Drain Ports AC units, when operated, release water vapor that brings in moisture which will then pass through the drain ports located in the middle of the evaporator coil and condenser coil. During this process, the fan blows away the moisture against the coil.

When doing an AC repair or maintenance, examine the drain ports for dirt. If there is dirt, it can block the drain ports that can bring in leaks in your units. To avoid clogging, you should clean the ports using the blade of a pocketknife or a short piece of wire hanger. Do this cleaning method in a regular basis starting from the time when the winter season starts. When done, inspect the condenser side. Some models of air conditioner come with drain ports placed at the bottom edge of the cabinet frame. If your air conditioning unit has this drain port, you should clean it out when cleaning the other ports.

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