Even voltages in excess of 125 v may reduce igniter life.
Hot surface ignitor voltage.
If high voltage is present the power company should be requested to lower the power.
The next step is to check to see if the pressure switch is closing.
You energize the furnace on a call for heat and make sure you get the proper amount voltage from the board.
Disconnect the hot surface ignitor and measure the voltage coming from the controller.
Coorstek hot surface igniter specifications.
Hot surface igniter voltage test.
You have verified that there is no 120 vac to the hsi.
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A good reading is 115 to 120 vac.
If it is closing you will find 24 vac on both sides of the pressure switch measured from chassis ground.
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A good hot surface ignitor will have a resistance of 40 to 90 ohms.
Greater than 90 ohms indicates a failing or failed hot surface ignitor.
I obviously found this out one day when i turned the oven on to preheat a.
If your hot surface ignitor is good then you need to verify power from the control board or ignition controller.
When the pressure switch closes the circuit board turns on the power to the hot surface ignitor.
The hot surface ignitor in my oven went bad.
Set the multimeter so it can properly measure a resistance of 10 to 200 ohms.
To be safe i would turn the gas supply off to ensure no gas is released during the test.
One of the causes could be high supply voltage.
Coorstek hot surface igniter specifications.
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Greater than 90 ohms indicates a failing or failed hot surface ignitor.
Originally recorded december 6 2013.
Disconnect the hot surface ignitor from the control board and measure the resistance.
There are several possible causes for repeated igniter failures.
If there is no voltage and the.
On a newer gas oven the burners release and set fire to the gas via an igniter called the hot surface igniter.
It works like a chain reaction.
A hot surface igniter can burn out at approximately 132 v.
The ignitor is a very fragile thing whether it s the round or the flat type.
Turning on the oven sends electricity to the igniter causing it to heat red hot.
