I have a Comfortmaker RPJ Heat Exchanger. It won't ignite. I tried the troubleshooting instructions on the unit and it won't work. I remember there was another switch that may have done the trick before but can't locate it. ANy suggestions?

Any response from unit when turned on? Clicking, humming, motors running, etc.

No, there is no sound clicking,humming, nothing.

Have you checked basics (power supply, etc.)?