Equipment
- York gas furnace, model GY9S100C20UP11J (direct vent, 100,000 BTU/h input)
York gas furnace repair in Danville
Problem: A York gas furnace in a Danville home wouldn’t turn on.
Diagnostics: Our technician found the furnace wasn’t getting any power. The fuse in the electrical disconnect on the wall had blown. With no power at the unit, nothing in the furnace can start: not the inducer, not the igniter, not the blower.
Solution: We replaced the blown fuse, and power came back to the furnace. Then we ran it through several heating cycles over about half an hour. It ran normally the whole time.
Nothing else acted up during testing, so we still don’t know why the fuse blew. A blown fuse can be a sign of a deeper electrical problem. We asked the customer to keep an eye on the furnace. If the fuse blows again, the next step is a full electrical diagnosis.
Result: The furnace is heating the house again. We found one more thing with the furnace open: the air filters were the wrong size for it. The one in the photo is a 20x24x1, and there’s an open gap in front of it. Air slips through that gap and skips the filter, dust and all. When you buy filters, measure the filter slot instead of copying the size off the old one. We repair York furnaces in Danville and across the Tri-Valley.
Photos
