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Open High Limit Switch


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Open High Limit Switch. It’s a small plate the two metallic. Turn off the furnace at the thermostat and the circuit breaker to ensure safety before troubleshooting.

SWT1729 Trane SWT1729 HiTemp Limit Switch (210° Open, 180° Close)
SWT1729 Trane SWT1729 HiTemp Limit Switch (210° Open, 180° Close) from www.supplyhouse.com

It's very likely that the high limit switch is opening. A “furnace limit switch open” alert can disrupt your home’s comfort, causing confusion and cold air to blow when you expect heat. Here’s how to address and fix the issue:

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SWT1729 Trane SWT1729 HiTemp Limit Switch (210° Open, 180° Close)

I have found in most cases the limit switch is fine. You need to test for that condition promptly after the burners shut off, and use an ac. You’ll find the limit switch on top of the panel. Learn about the crucial role of limit switches, common issues.

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