Have HVAC Questions? Ask an HVAC Expert for Answers
Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. If my initial response doesn’t answer your question then let me know and we can continue our conversation.
So you're getting a 2 blink code on the board?
If so you could have a bad draft pressure switch, the tubing to the switch could be obstructed/kinked, the port where the tubing connects could be blocked, you could have a weak fan or something fouling the fan (disconnect the vent and check).