Testing Furnace Flame Sensor
Testing Furnace Flame Sensor. The sensor is usually located on left side but on some furnaces it may be on the right side. Underneath the cover, this is a basic heat thermocouple sensor ;
It detects and confirms the presence of a flame burning inside the furnace to keep the gas supply alive or cut off supply as necessary to. Underneath the cover, this is a basic heat thermocouple sensor ; If it is bad, it will most likely not work.
How To Test A Furnace Flame Rod Sensor Canada.
It facilitates the communication between the gas valve and furnace firing. All you need is a multimeter and a light. The flame sensor is a part of all furnaces and it tells if the furnace has fired correctly.
If The Flame Sensor Cannot Sense The Flame At The End Of The Second Test, The Furnace May Be Permanently Shut Down And You Will Be Required To Clean The Flame Sensor To Restore The System.
To determine whether the flame sensor is sending a signal to the gas valve, you have to connect a multimeter than can measure microamps (µa) in series between the sensor terminal and the wire that leads to the gas valve. You can do this by powering down the heater and taking an ohm reading between neutral and the burner assembly. Remove the flame sensors mounting screw and detach the device from the assembly.
The Flame Sensor Detects If Your Furnace Is Actually Burning Its Gas And Producing A Flame.
Watch a pinnacle career institute student demonstrate how to test a flame sensor in a furnace. Unplug the furnace or switch off the power at the breaker. The furnace flame sensor is a short length of thin metallic rod found inside the burner assembly.
Putting A Meter Inline Between The Sensor And Lead Wire From The Furnace Control Board Allows You To Read The Dc.
The good thing about this step is that it’s easy to do. To avoid being caught in a situation where furnace service is needed immediately, schedule routine inspections. Just see if the furnace sensor is ok at all.
Most Furnaces Will Go Into A Safety Ignition Lockout When A Shutdown Happens Three Times.
• disconnect the flame sensor wire from sensor. You need a multi meter that measures micro amps which you will connect in series with the flame sensor. Before attempting this project, you will need to ensure the gas and electricity are both shut off to the unit.
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