Is there a manual on how to replace ignitor on intertherm furnace?

Check the fuses on the control board. They tend to wear out. If that is not the problem, check the ignitor.

www.intertherm.net/

furnace operation= call for heat- inducer blower motor energizes- pressure switch makes- after a few seconds ignitor activates.
If this series of processes is not whats happening the furnace may be going into a code safety. Call to discuss further=913-557-9111

Power off, power on. Let know what happens

If this is a mobile home furnace they usually have a two stage gas valve. Generally they just have a delay in opening fully and are convertable from L.P to natural gas or vice versa. It is a possibilty that the gas valve is bad. If so it will have to be replaced. First I would have someone check your thermostat to see if that is what is causeing the blower to run . does the burner ever light? I wouldsuggest that you hire a service tech. who is knowledgable on intertherm furnaces. I don't recommend anyone who is not trained to change gas valves,because of safty concerns. I hope this helps you some. Thanks

It appears your furnace is a downflow furnace. The sensor will be located near the bottom of the furnace. When you first turn it on, you should see a red glow.....this is the hot surface ignitor. Normally, the Hot Surface Ignitor is located on one end of the burners and the Flame Sensor is located on the oppoosite end of the Burners.
For more detailed information, click HERE.

sometimes the condensate lines can vapor lock of condensing style furnaces. Check all rubber lines. Make sure they are all snug and in place.

Hello , I think I can help , It sounds like the gas valve as long as your sure there is plenty of gas going to the unit and you have an electronic ignitor , if there is a pilot light its not electronic. the gas valve should come as an assembly to install and its pretty easy to complete. Let me know if you need more help. Good luck

ignitor coil could be bad again