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Furnace Not Working? No Heat?
Check These Points Before Calling For Service.
- Is the thermostat set to HEAT?
- Is the temperature higher than room temperature?
- Turn furnace switch OFF, wait 1 minute and turn back ON.
- Check to see if the electrical breaker is tripped.
- Check for dirty furnace air filter.
- Check to see if the gas pilot is off. Is gas valve near furnace turned on?
- Check for closed or obstructed registers.
- Make sure the door to the furnace (air filter) is closed tightly. If not a safety feature may automatically prevent furnace from running.
Still No Heat?
If you’ve tried all eight steps above and still no heat, call your PDM Heating professional. 815-390-7095.
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Why Does My Furnace Turn On and Off Quickly?
A furnace turning on and off rapidly, also known as “short cycling,” can be restricted airflow due to a dirty air filter, blocked vents, or clogged ductwork, which makes the furnace overheat and then shut off as a safety measure; other potential reasons include a faulty thermostat, malfunctioning flame sensor, or an improperly sized furnace for your home.
You may have an electrical fault in the overheating protection system. Gas ignition system safety controls not responding to commands. Contact PDM Heating Since 1885 for fast help.
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Why Is My Furnace Not Heating Enough?
A furnace might not be heating enough due to several reasons, including a faulty thermostat, a clogged air filter, issues with the gas supply, a broken flame sensor, leaky ductwork, problems with airflow, or a failing heating system itself. It’s important to check these components to diagnose the cause.
Check your air filter. If it looks like a gray furry cat it’s time to replace. A dirty furnace air filter can reduce airflow 60%, increase utility bills and cause costly breakdowns.
If the air filter is ok you may have a faulty air movement protection system. Could be dirty or blower needs to be replaced. Dirty gas burner may cause heating problems.
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Why Is My Furnace Making A Banging Sound?
Furnace banging sound can be expanding and contracting metal ductwork caused by temperature changes, dirty burners that delay ignition, a clogged air filter restricting airflow, loose parts within the furnace, or issues with the blower motor causing imbalances in air pressure.
A thumping, banging or clanking sound could be a loose or broken off part in the motor or blower assembly. Should you hear one of these noises, turn off your furnace immediately. Call PDM to examine and repair or replace the broken part before you turn your furnace on again.
Another possibility is a delayed ignition problem. Your furnace is “exploding” each time it turns on. Gas builds up in the combustion chamber before igniting, causing a small explosion when the flame finally starts, and this is a serious issue that needs immediate attention from a professional HVAC technician; potential causes include dirty burners, a faulty flame sensor, a malfunctioning gas valve, or a problem with the igniter itself.
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Why Is My Furnace Blower Not Working?
There are many reasons why a furnace blower might not be working, including:
Faulty electrical: A faulty capacitor, improper voltage supply, or tripped circuit breaker can prevent the blower from working.
Blower motor problems: The blower motor may be worn out or have other issues. Time to replace
Blower wheel obstruction: Something might be blocking the blower wheel, preventing the fan from spinning
Limit switch issues: A damaged or shorted limit switch can cause the blower to turn on and off repeatedly.
Bad belt: If the belt on an older gas furnace breaks or becomes loose, the blower wheel won’t turn.
Airflow obstruction: Improper installation can lead to restricted air ducts. Remove furniture or drapes blocking vents.
Dirty blower wheel: A dirty blower wheel can prevent proper airflow.
Thermostat. Turn the furnace HEAT OFF, and “FAN ON only,” and wait a few minutes. If you see or hear the fan turn on, your blower motor is not the culprit.
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Call PDM For 140 Years Of Trusted, Experienced Heating Repair? Call 815-390-7095.
Contact PDM Heating Since 1885 specialists for a HVAC serviceman who cares. Serving greater Joliet, Shorewood, Plainfield, Bolingbrook, Homer Glen, Lockport, New Lenox, Frankfort, IL area.
