Generator runs, puts out 124VAC @60.24 hertz. The problem is, the generator will not run the furnace.?

I've ran up against this problem twice before. Once I solved it by driving a ground rod and grounding the frame of the generator. Another time the ground rod did not help. We installed a power converter (filter) in line with the Trane furnace. I believe you've on the right track when you suspect the "ripple" in your generator power. Small generators are notorious for harmonics, transients and sine wave abnormalities. Good luck.

It is indeed a problem with the generator, Trane furnaces do not like the "dirty" power that it generates. In a service bulletin from Trane they suggest several things, the simplest among them(and the only one I can remember right now) is to also run an electric motor of some nature such as a box fan or the like at all times.

Also, be sure you have a good, clean ground.

Go to a radio shack/future shop etc and get a battery backup generally used for PC's. The length of backup is irrelevant so get a cheap one (maybe $50). These units regulate voltage, wattage and will clean up the sine wave which is designed to protect sensitive electronics from "dirty" power but this may help you out here.

Good luck.

Does it bog the generator down? If so Generator may not generate enough wattage. If it is the ripple would get an isolation transformer, you will have to make sure it is the correct size for the motor etc. Will not be cheap.

hey fordman why are you making your questions private ??

it appears you havent found the answers, but did you try a true

ground wire. and if that didnt work why not see if the is a common

problem by simply running an extenstion cord from the generator directly to

the furnace, if it doesnt work then its a communication error.

Is there some other condition needed for starting the furnace? For example, a signal from a thermostat?

the problem is when the blower starts too many amps on start up it fires up but when it calls for blower it cuts out

Reverse the polarity with your hot and common and it should fire up.It will do the same if wired wrong with 120v

What amperage are you dealing with (supply and demand)

? Hmnnnnnnn I wonder