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Troubleshooting
How to Troubleshoot a Pressure Switch
A furnace pressure switch is a safety feature that shuts down a furnace when it detects negative pressure.
How to Troubleshoot a Rollout Switch
Your furnace roll out switches are safety devices that or designed to detect flame rollouts.
How to Troubleshoot a Main Limit
A furnace limit switch, also known as a fan limit switch, is a safety device that prevents a furnace from overheating.