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You are here: Experts > Home/Garden > Home Appliances > Heating, Air Conditioning, Fridge, HVAC > Trane xr90 pressure switch fault
Expert: Eric Campion - 11/6/2009
Question
Hello, my furnace would not start up tonight. I looked and found the flash code 3 from the display. Electrically everything seems to be fine. The venter fan starts and runs, but the ignitor will not light. I removed the small hose that ties the pressure switch, the gas metering box (I think) and the heater box. If I cover the fitting on the valve with my finger the furnace will fire up and run, even when I hook the hose back up. If it shuts down, it will not fire back up. Any help would be greatly appreciated.
Answer
Thank you for your request. Unfortunately our expertise is with Major Home Appliances only. This would include washers, dryers, refrigerators, microwaves, dishwasher, ranges and ovens. If you need help with any of these appliances, feel free to submit another request. For your problem, please request assistance from a AllExpert with experience in the HVAC service field. If you ever need assistance with Major Home Appliances feel free to come back and initiate another request. Visit our Website at http://www.affordableappliance.com or email us directly at sales@affordableappliance.com
Thank You for your request,
Eric & Ann Campion
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