Updating furnace filter
Learn more: 10 Fall Maintenance Tasks That Prevent HVAC Repair Have there been any water leaks, from the furnace or anywhere nearby?
This could happen if your furnace is tucked up in a crawl space somewhere. Learn more: Don’t Let Furnace Water Leaks Ruin Your Holiday Did you allow a less-than-qualified person to try to service your furnace?
If you have a gas furnace, one of the valves may be failing.
When a valve is unable to open and close properly, it can sometimes heat up, causing an electrical short that blows a fuse.
Your furnace’s control board has a separate fuse that protects it from getting too hot. 13 Common Causes First the bad news: electric furnace problems can be frustrating.
If someone is poking around your furnace and is not too careful, they could more wires so that they come into contact with the furnace’s wire frame, causing them to short and blow the fuse on the furnace board. There are so many possible causes that it can be time consuming to discover the correct diagnosis. You can prevent almost all of these problems by regularly maintaining your HVAC system.
Learn more: Fall Furnace Maintenance: How to Change Your Furnace’s Air Filter Over time, the vibration that results from the furnace running can cause internal wires to become loose.
The problem could even be related to a thermostat fuse.It’s possible they put in a fuse that was too small to handle the capacity of your heating system. Again, if you haven’t had your furnace maintained in a few years, the parts may be dirty.When an HVAC fuse gets covered in soot and grime, it may no longer be able to connect sufficiently and can fail.They don't anymore you got the expected life out of it) Yea, XE70s love to split open their heat exchanger.Boss had one, the guys watched that sucker like a hawk til one of them found cracks!