How to Test a Limit Circuit
Can't find all the limits in the safety circuit? Has the board failed? Use this strategy to quickly and easily identify if there is an open safety/limit or a potential faulty board on a furnace.
Can't find all the limits in the safety circuit? Has the board failed? Use this strategy to quickly and easily identify if there is an open safety/limit or a potential faulty board on a furnace.
Пікірлер: 9
You are the man. Great description, and will be super helpful for me to narrow things down.
Thanks for doing these videos
Great tip Sir... Thanks for sharing BRAVO!..
Enjoy your videos. Keep the good work up
@HabeggerHelp
2 жыл бұрын
Thank you sir!
Good stuff Shawn
My Bryant 915SA48080S17 is heating up but throws a 33 after 3 minutes. The filter is brand new, and I even opened up the blower door, but the 33 is still popping. Any suggestions?
@HabeggerHelp
5 ай бұрын
If it’s within 3 minutes and filter is clean, registers open and such…I would think dirty secondary HTX or gas pressure. Many items affect limits, but tripping in 3 minutes eliminates a lot. We have seen issues with insulation not allowing proper airflow around the limit…but it runs longer than 3 minutes. Could be faulty limit but that’s rare. My guess would he dirty secondary or something blocking airflow. Any checks beyond filters and registers should be performed by a trained professional. I do a lot of DIY work myself, but replacing a trap on the sink won’t burn the house down as an example. Not knowing your skill level, just making sure that’s clear. Good luck.
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