if you are handyman, you can power off the machine, take off the cover, trying to take of the burner and clean the igniter ( the needle) to see if you are luck.
thermostat启动后,exhaust风扇启动, 刚才把furnance拆了看了看,估计是点火的问题。thermostat启动后,exhaust风扇启动吗,如果风扇启动,那就是点火的问题。如果风扇都不转,那是exhaust风扇的问题。