When I turn the heater on, the ignition light is on and the frame goes on, but just about for a few seconds. Then the unit shuts off. I try it again and the same thing happens.

I have a trane furnace with a varible speed blower motor controlled by a processor that when asked to run will only rock back and forth and not acually run what is the most likely problem

I have a Trane furnace that is 8 years old. The thermostat in the house was replaced with one that could be programed. Even when programed the furnace will run, shuts off and comes right back on again. This will go on for quite awhile. In looking at the furnace I notice there is a timer...

The blower runs constntly, must be shut off manually

I have a blower motor on a trand furnace, what would cause the motor to vibrate?