I'm new at this.. but have some electrical background and am experiencing similar issues as another post (https://www.askmehelpdesk.com/heatin...l)....I've got a brand new fan motor, relay, two capacitors (fan, and condenser) and my fan keeps stopping after 10-25 minutes. Where is the pressure switch? What does it look like? (Carrier system) Is it something I can replace? I have a spare thermostat is it likely to be bad... worked fine all winter..