Blog Title: What can cause furnace lock out?

Main Que: What can cause furnace lock out?

  • Category: Wall Ac And Heat Units
  • Query By: Lilly Joseph (Key West, FL)
  • Posted Date: 09/28/2016

Answer: The furnace lock out can be caused by variety of reasons such as faulty flame sensor and defective ignitor. It can also be caused if fuel pressure is not enough or if the heat exchanger is overheating. Dirty filters and venting problems can also cause it.

  • Replied By: J. Moore (Tallahassee, FL)
  • Replied Date: 10/01/2016