|reply to bryanviper |
Re: Weird York Furnace Issue & Bad Service
This may sound silly, but that pressure switch is protection to make sure the blower doesn't burn itself out.
Check all your dampers, and filter make sure there's no obstructions in your duct work. Many people like to seal off basement vents, and with enough obstruction in the duct-work your unit may be detecting a low pressure situation.
Could be something as simple as that. Good luck either way.