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How To Check A Flame Sensor On A Furnace

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How To Check A Flame Sensor On A Furnace. How to troubleshoot a flame sensor on furnace. Simply rub the emery cloth over the probe until the soot is gone, and the metal is more or less shiny.

Flame Sensing The Basics HVAC School
Flame Sensing The Basics HVAC School from hvacrschool.com

Video narrated by pci online hvac, lead faculty, bret doles. Then, pull on the wire boots to disconnect the leads. Then disconnect the wire that is connected to flame sensor.

Simply Rub The Emery Cloth Over The Probe Until The Soot Is Gone, And The Metal Is More Or Less Shiny.


We explain how to replace a flame. Most of the time, it should be inside a tiny back or front access panel. Use a screwdriver or wrench to unfasten the screws holding the flame sensor in place.

Ideally, You’ll Notice The Problem Through The First Two Signs And Won’t Have To Get To The Third One.


Remove the clamp that’s holding the sensor in place. Here’s how to clean flame sensor easily: • disconnect the flame sensor wire from sensor.

See If You Can Notice Any Kind Of Crack On The Flame Sensor Porcelain;


How to check the flame sensor? Watch the furnace ignite you will see spark or orange glow in front of one burner and the flame sensor should be on opposite side, but i have seen them on the next burner from the igniter. How to test a furnace flame sensor.

The Switch Will Resemble A Miniature Toggle On Your Furnace.


Once the board sends a call to the gas valve to open, it monitors the current flow on the flame sensing rod. Once you see something like this happening, you have to locate the flame sensor to check if: Identify the flame sensor on your furnace.

First, You Will Need To Remove The Furnace Access Cover Which May Be Held Together By Either Knobs, Screws, Or Tabs And Slots.


It will look like a thin metallic rod and is set in front of the pilot flame on the interior of your furnace. To locate the sensor, just remove the furnace access cover and search for a metallic rod with white or dingy yellow/brown porcelain surrounding the. First find the flame sensor.

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