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To test a furnace limit switch, you can use a multimeter to check for continuity. First, turn off the power to the furnace. Then, locate the limit switch and remove the wires connected to it. Set your multimeter to the continuity setting and touch the probes to the terminals on the switch. If the multimeter beeps or shows a reading of zero ohms, the switch is functioning properly. If there is no continuity, the switch may need to be replaced.

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4mo ago

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To test the furnace limit switch, you can use a multimeter to check for continuity. First, turn off the power to the furnace. Then, remove the wires connected to the limit switch and set your multimeter to the continuity setting. Touch the probes to the terminals on the limit switch. If the multimeter beeps or shows a reading of zero ohms, the switch is functioning properly. If there is no continuity, the switch may need to be replaced.


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To test a furnace limit switch, you can use a multimeter to check for continuity. First, turn off the power to the furnace. Then, remove the limit switch and test for continuity between the terminals using the multimeter. If there is no continuity, the switch may be faulty and needs to be replaced.


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