It’s not聽unheard of聽for heating systems to have a聽problem聽every now and then. It could be as聽simple聽as a聽bad聽thermostat or an electrical聽issue. If your gas furnace won’t聽shut聽off, here are a聽few聽steps you can take to get a聽properly聽working furnace听补驳补颈苍.
Check聽the Air Filter
A dirty air filter聽creates聽issues聽for聽many聽homeowners and their HVAC system. Here’s why. It聽restricts聽airflow,聽forcing your furnace to聽work harder and run longer to聽satisfy聽your聽ideal聽temperature.
This聽multiplies聽usage聽on your furnace, as well as the聽odds聽of a聽malfunction聽and聽premature聽failure.
It can also make your furnace聽overheat聽and shut聽off聽for a time to cool聽down. Then it will keep聽duplicating聽this process when your furnace聽turns聽on. This is聽called聽short cycling. In addition to wearing out your furnace聽faster, it can聽drive up聽your heating bill and make your home feel聽uncomfortable.
We聽encourage聽replacing flat filters聽once a month聽and pleated filters every three months. If you can’t remember the last time you聽got a new聽furnace filter,聽remove it聽and hold it up to the light. If you can’t聽detect聽light through your filter, it’s too聽dirty聽and you should聽replace it.
If the matter was聽connected聽to a clogged air filter,聽connected聽a聽new聽filter should聽solve聽this common聽issue聽when your heat won’t turn off. If not, we聽recommend聽checking your thermostat settings next.
Check聽the Thermostat
Your thermostat聽controls聽your furnace and聽basically聽tells聽the unit when to turn on and off. It’s聽often聽to blame聽when your furnace won’t stop running.
Sometimes聽having the heat turn off is as聽easy聽as聽adjusting聽an incorrect聽thermostat setting.
Make Sure聽Your Thermostat is Set to “Auto”.
Your thermostat聽includes聽two settings, “auto” and “on,” that聽control聽your heating system’s blower motor.
“Auto”聽means聽the furnace blower will only聽operate聽when the furnace does.
“On”聽means聽the furnace blower will聽operate聽continuously. This constant air flow can help with heat聽distribution聽but will also聽increase聽your power bill and聽lead to聽wear and tear on your furnace.
If your thermostat is聽switched聽to “on,” it will聽seem聽like your furnace is not聽shutting聽off, but it’s really just the furnace blower you’re聽noticing.聽Changing聽it to “auto” should聽solve聽the problem. It will also help you聽save聽money on your energy costs.
Check聽Your Temperature Setting
If your thermostat won’t turn off heat,聽check聽the temperature setting to the聽compare聽temperature. If it’s聽greater聽than the room air temp, your furnace will keep聽operating聽until it聽reaches聽your desired temp.
Remember聽that if it’s聽very聽cold outside, your furnace will have to聽operate聽much longer than聽usual聽to keep your home聽cozy. This is聽due to聽a聽large聽temperature difference between the cold air outside and the warm indoors.
As a聽test, you can try聽reducing聽the聽thermostat聽to聽correspond with聽the room. Then, wait a聽couple of聽minutes. This should make the furnace聽shut聽off聽match.
Put in New聽Batteries
If you聽have聽a programmable thermostat, it’s聽likely聽battery powered. You can聽test聽replacing the聽batteries to see if that聽resolves聽the聽issue. If it doesn’t or if there’s wiring to your electrical system,聽shift聽it to “off.”
If your furnace won’t聽turn聽off after you聽switch聽it to “off,” you will need to聽turn off聽the power.
turn off聽the Power
Thermostat聽appears聽to be working fine but your furnace still won’t聽turn聽off? There are two聽places聽you can聽shut off聽the power to your heating unit: at the breaker box and at its聽specific聽power switch.
- Head聽to your breaker box and聽find聽the breaker聽labeled聽“furnace.”聽Move聽the breaker switch to the right to聽shut off聽power.
- Next,聽look聽for the聽specific聽power switch to your heating system.聽It looks like聽a light switch and聽can be found聽on or聽close to聽your furnace.聽Move聽the switch down to聽shut off聽power.
- Your furnace should be聽shut聽off now.
If you had to聽switch聽off your system at the breaker,聽contact聽us at (866) 963-7996 for professional service, as you may聽require聽furnace repair.
What Causes a Furnace to Keep Running?
Occasionally聽fixing聽this problem can be as聽easy聽as聽replacing聽your air filter or聽adjusting聽thermostat settings. In other聽instances, you might聽need聽a professional when your heater won’t聽shut聽off.
Fan Limit Switch Needs聽Replacing
The furnace fan limit switch聽controls聽your furnace’s blower motor. If the switch goes聽bad, it might聽seem聽like your furnace running聽continuously, even though just the blower is聽running.
You might聽see聽a聽furnace error code聽if there’s聽an issue聽with the limit switch. Your furnace will聽speak聽using聽a聽blinking聽red light on the front of your heating system.
Our Experts can聽diagnose聽and聽fix聽any聽problems聽you’re having with your furnace blower motor.聽Sometimes聽this can involve replacement parts,聽like聽the control board, faulty wiring or the fan switch itself.
叠补诲听罢丑别谤尘辞蝉迟补迟
Like聽anything else聽in your home, your thermostat can聽break down聽over time聽and need to be replaced. If聽you're due聽for a new one, ask us about聽installing聽a聽smart thermostat.
These thermostats make it聽simple聽to save energy,聽since聽they聽develop聽an energy-efficient heating and cooling schedule聽according to聽your聽needs.聽Plus, you’ll be able to聽set聽and聽monitor聽your thermostat from just about聽anyplace聽with your phone.
Air Ducts Are Leaking
Your furnace聽relies on聽ductwork to聽distribute聽hot air to vents聽across聽your home. If your home or ductwork is older, your furnace might be聽operating聽all the time聽since聽the ductwork is leaking hot air in the attic.
Diagnosing聽this leaky ductwork and other airflow聽issues聽can be聽difficult聽to聽troubleshoot聽on your own, since it’s聽hidden聽behind walls and ceilings. Our Experts can help with聽Diagnosing聽and聽handling聽any聽air duct repair聽service that you聽require.
Depend聽on Our Experts for All Your Furnace Repair Needs
Troubleshooting furnace聽issues聽can be聽annoying,聽especially聽when it聽affects聽your comfort, energy efficiency and heating bill. When it聽involves聽furnaces, there’s a reason why we say we’re Experts in our聽field. You can聽depend聽on our ACE-certified technicians to聽solve聽your problem quickly and affordably. And what’s even better, we聽stand behind聽our HVAC system repairs with a 天美传媒 Guarantee.*聽contact聽us at (866) 963-7996 to聽book聽your appointment聽now.
