Furnace Repair Checklist
1. Look at the Thermostat
To begin, make sure your thermostat is signaling your heater to turn on.
- Replace the batteries if the display is blank. If the digital display is mixed up, the thermostat may need to be swapped out.
- Make sure the button is switched to “heat” as opposed to “off” or “cool.”
- Ensure the program is displaying the appropriate day and time and is programmed to “run.” If you’re having trouble overriding the schedule, set the temperature by utilizing the up/down arrows and pressing the “hold” button. This will make the heater to turn on if thermostat settings are a problem.
- Set the temperature setting to 5 degrees above the temperature of the room.
If your heating hasn’t started within a couple minutes, make certain that it has juice by toggling the fan switch from “auto” to “on.” If the fan doesn’t operate, your heating system could be without power.
If you utilize a smart thermostat—for example one manufactured by Nest, Ecobee, Lux, Honeywell or Bosch—troubleshooting will be determined by the model you have. Check the manufacturer’s website for assistance. If you still can’t get your Wi-Fi thermostat to operate, reachl us at 513-268-5164 for heating and cooling service.
2. Check Breakers and Switches
Next, you will need to check if your breaker and furnace switch are on.
- Find your house’s main electrical panel. If you have no idea where it is, keep an eye out for a metallic metal box in your basement, garage or closet.
- Make certain that your hands and feet are dry before opening the panel or breakers.
- Locate the breaker labeled “furnace” or “heat,” and ensure it’s turned “on.” If you find that the breaker tripped, it will be in the middle or “off” area.
- Moving one hand, firmly turn the breaker to the “on” position. If the breaker trips right away and pops back to “off,” leave it alone and contact an expert from Carefree Heating and Cooling, LLC at 513-268-5164 right away.
No matter your furnace’s age or brand, it has at minimum one standard wall switch positioned on or by it.
- Ensure the lever is facing up in the “on” position. If it was shut off, anticipate your furnace could take up to five minutes to turn on. (If you don’t know where to locate your furnace, look in your basement, garage or utility closet. It could also be in a crawl space or attic.)
3. Buy a New Air Filter
When we consider heater problems, a filthy, blocked air filter is often the top offender.
If your filter is too dusty:
- Your heater won’t be able to stay on, or it might overheat from limited airflow.
- Your utility expenses could increase because your heat is turning on more than it should.
- Your heating system might stop working too soon since a filthy filter forces it to overwork.
- Your heating might be cut off from power if an excessively dirty filter causes the breaker to trip.
While it depends on what type of heating system you own, your air filter is located in the interior of the blower compartment of your furnace, an attached filter case or wall-mounted return air grille.
To swap out your filter:
- Turn off your heater.
- Pull out the filter and angle it toward the light. If you can’t see light through it, use a new one.
- Insert the new filter with the arrow motioning toward the heater to avoid damage.
Flat filters need to be replaced once a month, while pleated filters should be used for about three months. You may also use a washable filter that will work for about 10 years. If you have children or pets, you could have to put in a new filter sooner.
To make the procedure easier in the future, use a permanent writing tool on your furnace housing or ductwork to indicate the airflow direction and filter size.
4. Examine the Condensate Pan
Commonly known as drain pans, condensate pans capture moisture your furnace draws from the air.
If water is leaking from within your furnace or its pan has too much water in it, follow these steps.
- If your pan has a drain (look for a PVC pipe), make sure that it’s clear. If it requires draining, get a special pan-cleaning tablet you can buy at home improvement or hardware stores.
- If your pan uses a pump, check the float switch. If the button is jammed “up” with standing water in the pan, contact us at 513-268-5164, because you will possibly have to buy a new pump.
5. Check for Heating Error Codes
If faults persist, take a look within your heater’s plastic window to verify the blower motor’s status. Depending on the brand, the light could also be fixed on the surface of your furnace.
If you see anything other than a steady, colored light or flickering green light, reach us at 513-268-5164 for HVAC service. Your heating system may be communicating an error code that is calling for professional help.
6. Clean the Flame Sensor
If your furnace attempts to work but switches off without putting out heated air, a dirty flame sensor can be responsible. When this happens, your heater will attempt to start three times before a safety device shuts it down for around an hour.
If you feel okay with removing the panels from your heating system, cleaning your flame sensor is work you have the ability to do yourself. Or, one of our heating service professionals has the ability to complete it for you.
If you are fine with cleaning the sensor on your own, you require:
- A 1/4” hex screwdriver or wrench
- Section of light grit sandpaper, steel wool or emery cloth
- A dry, clean paper towel
- Turn off the heating system’s power by using its wall switch or breaker. If your furnace’s gas valve isn’t electric, you must shut off the gas along with it.
- Lift off the heating system’s front panel and follow the wire to the flame sensor.
- Take off the rod and use your sandpaper, steel wool or emery cloth to lightly rub the metal rod.
- Clean the rod with a paper towel.
- Remount the sensor.
- Replace the furnace doors.
- Switch the furnace’s power back on. It might go through a series of tests before proceeding with normal heating. If your furnace doesn’t ignite, the sensor may need to be replaced or something else may be creating an issue. If this happens, get in touch with us at 513-268-5164 for heating and cooling repair assistance.
7. Relight the Pilot Light
If you are using an outdated heater, the pilot light could be turned off. To reignite it, look for the instructions on a label on your heater, or use these guidelines.
- Locate the toggle on the bottom of your furnace marked “pilot,” “on” and “off.”
- Push the switch to the “off” position.
- Take a break for at least five minutes to prevent sparking a fire.
- Move the dial to “pilot.”
- Hold down the “reset” lever as you bring the flame of a long lighter to the pilot light opening.
- Depress the “reset” lever once the pilot light is ignited.
If you have followed the instructions twice and the pilot light still won’t ignite or keep ignited, get in touch with us at 513-268-5164 for furnace service.
Check Your Fuel Supply
Try switching on another gas appliance. If it doesn’t function, your natural gas delivery might be shut off, or you might have run out of propane.