Customer has a 3 year old American Standard gas furnace, she said that her furnace and thermostat were fried and not working. She had an electrician come by and inspect it, but he wasn't able to do anything. Upon investigation, I found that the thermostat has failed due to a power surge that hit the home. I also found that the fuse on the control board was blown and the contactor at the condenser was fried along with wiring. I replaced thermostat, contactor, and fuse/wiring and tested all modes of operation. All components are within manufacturers specifications and system fully operational. Recommend annual maintenance and power surge protector for either home or equipment.
A pinging or popping sound coming from the duct work can come from thermal expansion—the ductwork expanding and contracting as it heats and cools. Or, air blowing past a loose flap of metal can make the sound. Track along the duct runs, listening for the sound. If you locate it, make a small dent in the sheet metal to provide a more rigid surface that’s less likely to move as it heats and cools.
At Genz-Ryan, we are here for you 24 hours a day, 7 days a week so you can count on us for all your heating repair work in the Minneapolis area. Our furnace repair technicians are well-trained and experienced. They’re ready to take care of any heating issue that you may have. We are a Lennox Premier Furnace Dealer and provide expert furnace repair service for most of the Minneapolis/St. Paul area. For over 60 years we have been getting the job done right the first time.