Upon arrival customer stated that heat stopped working yesterday, stated that she has been having remodeling work done in basement and that filter was very dirty when they changed it and noticed system was in a lockout. Found system still in a lockout and had to reset power to system in order for unit to work again. Restarted system and everything came on. Checked over all operations of system and everything was working with no issues, all zone dampers were opening properly and unit is heating. Unit does need a Uv light sent estimate to customer.