Furnace Thermocouple Guide: Troubleshoot, Test, and Replace Quickly
Testing a furnace thermocouple is essential for diagnosing ignition problems. In this guide, step-by-step instructions show how to use a multimeter to measure voltage and check continuity, confirming whether the thermocouple is functioning properly. It also covers common troubleshooting scenarios, such as pilot light issues or intermittent furnace shutdowns, and explains how to isolate the thermocouple as the cause. Safety tips for handling and testing the device are included. Following these steps helps you accurately identify defective thermocouples, maintain efficient heating performance, and avoid unnecessary service calls, ensuring your furnace operates reliably throughout the cold season.
Learn the proper way to inspect, test, and replace a furnace thermocouple to maintain a safe, efficient, and smoothly running home heating s
