Upon arrival I replaced the circuit board as the circuit board had some ware marks on it/discoloration. Also if you touched circuit board it would do different things it wasn’t supposed to. Circuit board was defiantly bad. Now fault code is pressure switch open with inducer motor on. Furnace is 20 years old with outdated technology. Found condensate tubing clogged, cleared with vinegar and water. At this point furnace is on its last leg, and needs replaced. The system is operational upon departure.
