Suburban Furnace In Lockout Mode I Troubleshooting Tips

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Today's question comes from Barbara who explains that her Suburban NT20SQ furnace is giving her trouble. It keeps going through a lock down mode, causing her to have reset it. Barbara has followed our videos and has checked all the operations it goes through.

Follow the trail with Darren as he demonstrates to Barbara how to identify whether the sail switch has failed and how to differentiate between a failed sail switch and a failed board - and get a brief explanation of circuits and other good information along the way.

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Intermittent Sail Switch Problem? Check out this video here!
https://youtu.be/KBUTJMkrFlg

Full Furnace Playlist: https://www.youtube.com/watch?v=9cu1UvVcQ-o&list=PLk44vSl27TRCaZIQbm-0utYK7sVOKwXVY
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Resources
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Topic: Furnace In Lockout Mode
System: Suburban NT20SQ
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Film Date: October 18, 2022
Location: Joyce, WA

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