Furnace Repair Checklist
1. Examine the Thermostat
To start, ensure your thermostat is instructing your furnace to ignite.
- Replace the batteries if the display is blank. If the digital display is messed up, the thermostat may need to be replaced.
- Ensure the control is on “heat” rather than “off” or “cool.”
- Make sure the program is displaying the correct day and time and is scheduled to “run.” If you’re having problems overriding the schedule, regulate the temperature with the up/down arrows and using the “hold” button. This will cause the furnace to start if thermostat is causing trouble.
- Turn the temperature setting to 5 degrees warmer than what the room temperature currently is.
If your heating hasn’t turned on within several minutes, make sure it has power by moving the fan switch from “auto” to “on.” If the fan doesn’t begin to run, your heating system might not have power.
If you utilize a smart thermostat—such as one made by Nest, Ecobee, Lux, Honeywell or Bosch—troubleshooting will depend on your model. Take a look at the manufacturer’s website for assistance. If you’re still unable to get your Wi-Fi thermostat to work, reach us at 570-322-3131 for heating and cooling service.
2. Examine Breakers and Switches
Next, confirm your breaker and furnace switch are on.
- Find your main electrical panel. If you have no idea where it is, keep an eye out for a silver metal box in your basement, garage or closet.
- Make certain that your hands and feet aren’t wet in advance of opening the panel or breakers.
- Locate the breaker marked “furnace” or “heat,” and ensure it’s reading “on.” If you discover a tripped breaker, it will be in the middle or “off” spot.
- Using one hand, quickly turn the breaker to the “on” position. If the breaker instantly trips and pops back to “off,” don't try to reset it and call an expert from Airmen HVAC Service at 570-322-3131 quickly.
It doesn’t matter how old your furnace is or what brand it is, it has at least one standard wall switch positioned on or close to it.
- Ensure the switch is flipped up in the “on” position. If it was switched off, anticipate your furnace could take up to five minutes to start. (If you don’t know where to locate your furnace, take a look at your basement, garage or utility closet. It can also be in a crawl space or attic.)
3. Replace the Air Filter
When it comes to heating breakdowns, a grungy, full air filter is regularly the top culprit.
If your filter is too dusty:
- Your heater won’t keep heating your home, or it could overheat from limited airflow.
- Your gas bills might be higher because your heat is operating more than it should.
- Your heating system could fail sooner than it should since a filthy filter triggers it to overwork.
- Your furnace might be cut off from power if an overly dirty filter results in a tripped breaker.
Depending on what model of heating system you have, your air filter is located in the interior of the blower compartment of your heater, an attached filter case or wall-mounted return air grille.
To replace your filter:
- Cut the power to your heating system.
- Pull out the filter and angle it toward the light. If you can’t view light through it, get a new one.
- Insert the new filter with the arrow facing toward the heater to prevent damage.
Flat filters ought to be replaced every month, while pleated filters should last about three months. If you have children or pets, you could have to replace your filter more often.
To make the procedure easier down the road, draw with a permanent writing tool on your furnace housing or ductwork to show the airflow direction and filter size.
4. Examine the Condensate Pan
Otherwise known as drain pans, condensate pans catch moisture your furnace draws from the air.
If water is leaking from your heater or its pan is overflowing, try these steps.
- If your pan includes a drain (look for a PVC pipe), check that it’s clear. If it requires draining, drop in a special pan-cleaning tablet you can get at home improvement or hardware shops.
- If your pan contains a pump, take a look at the float switch. If the button is jammed “up” with standing water in the pan, contact us at 570-322-3131, because you will possibly have to buy a new pump.
5. Check for Heating Error Codes
If failures persist, peek within your heating system’s plastic window to check the blower motor’s status. Dependent on the type, the light could also be attached on the surface of your furnace.
If you notice anything except a steady, colored light or flickering green light, contact us at 570-322-3131 for HVAC service. Your heating system might be communicating an error code that is calling for expert service.
6. Brush off the Flame Sensor
If your furnace attempts to work but turns off without blowing heat, a dirty flame sensor can be at fault. When this happens, your heater will make an attempt to turn on three times before a safety mechanism shuts it down for around an hour.
If you feel okay with taking the panels off your heater, gently scrubbing your flame sensor is something you can do personally. Or, one of our heating service experts can complete it for you.
If you want to clean the sensor personally, you require:
- A 1/4” hex screwdriver or wrench
- Piece of light grit sandpaper, steel wool or emery cloth
- An unused paper towel
As the next step:
- Disable the heating system’s power through its wall switch or breaker. If your furnace’s gas valve isn’t electric, you will need to turn off the gas in addition.
- Remove the furnace’s front panel and follow the wire to the flame sensor.
- Unscrew the rod and use your sandpaper, steel wool or emery cloth to carefully scrub the metal rod.
- Wipe off the rod with a paper towel.
- Put the sensor back in.
- Put the furnace doors back on.
- Switch the furnace’s power back on. It might go through a sequence of tests before continuing normal heating. If your furnace doesn’t ignite, the sensor may have to be replaced or something else may be creating an issue. If this happens, call us at 570-322-3131 for heating and cooling repair assistance.
7. Light the Pilot Light
If you are using an aging furnace, the pilot light could be out. To reignite it, find the steps on a sticker on your heating system, or follow these steps.
- Find the switch on the bottom of your heating system labeled “pilot,” “on” and “off.”
- Move the switch to the “off” position.
- Take a break for at least five minutes to limit the possibility for sparking a fire.
- Push the knob to “pilot.”
- Push the “reset” button as you bring the flame of a long lighter to the pilot light opening.
- Release the “reset” switch once the pilot light is burning.
If you have gone through the guide twice and the pilot light still won’t ignite or stay burning, call us at 570-322-3131 for furnace service.
Double-Check Your Fuel Delivery System
Try switching on an additional gas appliance. If it doesn’t function, your natural gas source might be switched off, or you may have run out of propane.