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A properly maintained gas heating system should not give you very many problems. However, problems do sometimes arise. Some of the more common problems might not require you to call a professional for furnace repair. Knowing the difference can save you time and money. These problems and solutions are only applicable to conventional gas furnaces with 89 percent AFUE. High-performance systems have different protocols for furnace repair. 1. Furnace Is Not Producing Heat This problem could be the result of a few different malfunctions. Your thermostat could be broken, or it might not be receiving electricity. For a non-electronic ignition system, the pilot light might be out. For an electronic system, the igniter could be faulty. To troubleshoot these problems, you should check to make sure the thermostat is turned on and set to a temperature that would draw heat. If the thermostat will not turn on, flip the circuit breaker if it has flipped. If a fuse is blown, replace it. Lastly, make sure the pilot light is lit. If you have an electronic ignition system, follow the directions on your system to troubleshoot it. If the system is still not producing heat at this point, you might need to call for professional furnace repair. 2. Furnace Produces Heat But Not Enough A dirty air filter or dirty gas burners could create this problem. Alternately, the burners could need adjusting or something could be obstructing air flow to the combustion chamber. If the air filter is dirty, then you should replace it as soon as possible. If the burners are dirty, then you should clean them. However, if the burners need to be adjusted, you will have to call a professional technician. Also, make sure that nothing is blocking airflow to the combustion chamber. 3. Furnace Runs Too Frequently If your system keeps turning on and off frequently, you might have a thermostat problem. Other possible causes could be a dirty air filter or a problem with the blower motor. First, replace your dirty air filter. If you have a mechanical thermostat, try adjusting the heat anticipator. If you have an electronic thermostat, follow the instructions included with the device to troubleshoot any possible problems. If this still does not solve your problem, you might have a blower motor problem. Try oiling the blower motor lubrication ports which are usually located at each end of the shaft. Also, check the tension in the motor belt. If it is too loose, tighten it. If it is frayed, replace it. If any of this seems like more work than you are comfortable performing, call a furnace repair technician. You should be careful not to make the problem worse. 4. Blower Runs Constantly If your system's fan is running non-stop, you might have the system set to "continuous." If your thermostat does not have a "fan" setting but it still runs without stopping, you could have a problem with your fan limit control switch. Replacing or resetting the fan limit switch inside the furnace should fix this problem. To learn more about their options for furnace repair, Bethlehem, PA residents should visit http://ugihvac.com/heating.php.
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