This one covers how to replace the HSI on the gas furnace. This is done on a Trane TUY model but it works on TUX and TDX. It is also good for most other models of high efficiency furnaces. This video is part of the heating and cooling series of training videos made to accompany my websites: www.graycoolingman.com and www.grayfurnaceman.com to pass on what I have learned in many years of service and repair. If you have suggestions or comments they are welcome.
If you are a homeowner looking to repair your own appliance, understand that the voltages can be lethal, the fuels are highly flammable and high pressures are used. Know your limits.
