#Lennox furnace parts near me professional
If the pilot light still does not come on, there could be an issue with the gas flow at which time you will need to contact a professional HVAC technician for help. Simply turn off the gas leading to your furnace, and then clean the light housing. If it still does not come on, the pilot light housing might need to be cleaned.
#Lennox furnace parts near me how to
If the pilot light is out, follow the instructions in your owner’s manual on how to relight it, and then try to relight it. Afterward, replace it with a clean filter to see if it helps.Ģ Pack of X6670 Lennox OEM Merv 11 Filter Media 16"X25"X5" Fits X6660. If your filter hasn’t been changed in a while, simply check the filter to see if it is dirty. In fact, it is recommended that the filter is changed once every three months. If your Lennox furnace uses a disposable filter, it may need to be changed. You should also check that the furnace switch, which is usually located on the side of the furnace, is flipped to on, and then flip the breaker off and then on again to see if it helps. If it is, simply flip the breaker back on to see if it helps. Check the PowerĪ tripped breaker is another common cause of a furnace not coming on, so check the circuit breaker to be sure it is not tripped. If your thermostat uses batteries, you should also check the batteries to see if they need to be replaced, which will also cause the system not to come on, and replace the batteries if needed to see if it helps. When the thermostat setting is set too low, it will cause your furnace not to put out heat. If your furnace won’t come on or is not putting out heat, simply check that the thermostat is on and set to the correct setting. When Lennox furnace troubleshooting, first thing’s first. Lennox Furnace Troubleshooting Check the Thermostat Multimeterįor more extensive Lennox furnace troubleshooting, such as checking the system’s voltage, current, and resistance, you may consider purchasing a multimeter, which is an electronic measuring instrument with probes that allow you to connect to various furnace components. Flashlightĭepending on where your furnace is located, it may be dark in and around your unit, in which case, you will need a flashlight for viewing the furnace area. Therefore, you will need a 4-in-1 screwdriver to remove the furnace covers and inside panels in the burner, so that you may access the parts. Lennox furnace troubleshooting often involves inspecting the unit’s inner components. Tools You’ll Need for the Job 4-In-1 Screwdriver If the flame sensor does not detect a flame, it will also cause the furnace to shut off.Ĥ1K5601 - Lennox OEM Replacement Furnace Ignitor Igniter If the ignition process delays, it will cause the furnace to shut off. However, if the control board is defective, it may not be sending power to the ignition system, which will prevent the furnace from remaining on.Ī defective pressure switch, which means it isn’t closing when the burner has sufficient airflow, could also be causing the firing-up process to delay.
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The control board sends power to the ignition system, which fires up the system. If the furnace fires up but then shuts off after a few minutes, it could be that the control board is faulty. If the flame sensor does not detect a flame, as a safety precaution, the control board will shut off power to the gas valve to prevent the furnace from heating. A dirty or faulty pressure switch, which monitors the burner to detect a flame, can also cause the furnace not to produce heat. If the igniter fails, it will also cause the furnace not to produce heat. If you arrive home or arise in the morning to a cold house, it could be that the thermostat is set on a low setting, which can cause the furnace not to put out heat.
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Sometimes a circuit may have tripped, which can also cause the unit not to start. In this case it will need to be exchanged for a new one.
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Sometimes, either the thermostat has been switched off accidentally, or the thermostat has completely gone out. If your furnace just stopped working, it could indicate an issue with the thermostat. Lennox Furnace – Common Issues The Furnace Won’t Start When Lennox furnace troubleshooting, some of the most common issues include: Fortunately, many issues can be pinpointed and, in some cases, even repaired yourself. When this occurs, you may notice that your furnace just doesn’t perform how it used to. Lennox furnaces are quality units however, similar to other furnaces, after some time, they can encounter their share of issues due to normal wear and tear or a lack of regular care and maintenance.