If you’re experiencing furnace problems in the midst of our Northern Michigan winter, don’t panic. Many common issues have simple solutions, and don’t require a professional repair. Before you pick up the phone and call your HVAC technician, give the following furnace troubleshooting tips a try.
Your furnace won’t start. First, check for a tripped breaker in your electrical panel and on the unit itself. Then make sure that the furnace’s power switch is “on.” Also, check that the gas valve is open all the way (parallel to the pipe) so there’s a flow of gas, and that the pilot light is lit.
The furnace is cycling on and off too often. This can be caused by a dirty air filter, so check it first, and replace it if needed. If this doesn’t help, look for oil ports on your blower motor and add a few drops of oil to each one.
You’re hearing a lot of noise when the furnace is operating. Check that the unit’s access panel is fully in place and tightened. If you’re hearing the furnace belt squealing, try spraying it with belt dressing, and if it looks too tight or loose, adjust it. If the belt appears damaged or worn, replace it. Adding oil to the blower motor oil ports can also help lessen noises that occur while the fan is running.
You’re not getting enough heat. A sudden drop in heat output can indicate that the furnace filter is clogged, so check whether it needs to be cleaned or replaced. It may be that the blower assembly needs to be cleaned, or that the blower belt needs to be tightened or replaced.
The blower runs continuously. First, make sure that your thermostat is set on “Auto” and not “On.” If that doesn’t help, the furnace’s limit switch may be stuck in the “open” position, and resetting it may be the cure.
If none of the above furnace troubleshooting tips work, and you need expert advice, please contact us at Team Bob’s Heating Cooling Plumbing. We’ve proudly served Grand Traverse County for over 30 years.
Our goal is to help educate our customers in Traverse City, Michigan and surrounding areas about energy and home comfort issues (specific to HVAC systems). For more information about furnace troubleshooting and other HVAC topics, download our free Home Comfort Resource guide.
Image courtesy of Shutterstock