Set a multimeter to read AC milliamps. Insure the multimeter is set for AC milliamps and turn on the test power cord switch to power the ignitor. If there is no spark, replace the ignitor. Monitor the input current with the multimeter set on AC milliamps for 5 minutes.Click to see full answer. Herein, what is direct spark ignition?With this type of ignition system, there is no pilot. A spark (like a spark plug) ignites the main flame directly. The pilot is eliminated altogether. The spark plug is energized with a high voltage charge that creates a spark. The thermostat closes a circuit, allowing the main gas valve to open.Also, how do I know if my hot surface ignitor is bad? Set the multimeter so it can properly measure a resistance of 10 to 200 ohms. Disconnect the hot surface ignitor from the control board and measure the resistance. 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. Herein, what causes furnace ignitor failure? ignitor failure. Call your electric company if you are getting high voltage in your home. Debris from the heat exchanger or bugs/spiders can get on the ignitor while the furnace is not calling for heat and when there is a call for heat the debris/bug can short the ignitor out.Can you clean furnace ignitor? Dust the hot surface igniter without touching it Clean the dust off the hot surface igniter by leaving the igniter in place and blowing air through a straw. This part breaks very easily; don’t even touch it. In fact, when you replace the furnace doors, do so gently to avoid breaking the igniter.
ncG1vNJzZmivp6x7pLHLnpmroaSesrSu1LOxZ5ufonuotI6hprBllKR6urvUZqueq6Rirm6wyKucnKxdqL2ivspmoKCmmam8s3mSaA%3D%3D