No heat. Found system off on pressure switch error code. Checked electrical components, checked venting, checked heat exchanger. System randomly came on and ran after testing wires and tapping on control board, pressure switch closed as it should. Inducer motor very loud and there is no flood protection for system. Quoted repairs and recommended getting quote to replace system due to age and conditions. Customer opted in to have board replaced, supply shops closed at this time, will need to call in the morning to confirm availability of part and eta. Informed customer that signed quote price is not final as of now until we get exact pricing of part.