How do you know if a hot surface ignitor is bad?

Quote from the video:
Quote from Youtube video: If when tested you see no reading on your tester or your dial doesn't move if you have an analog gauge. This will indicate the igniter is bad it must be replaced.

How do you fix a hot surface ignitor?





Quote from the video:
Quote from Youtube video: Once the screws are removed you can pull out the igniter. This style has two tabs that you need to squeeze. So that you can pull apart the plug. And this disconnects the old igniter.

What would cause a gas furnace not to ignite?

If your furnace won’t ignite, the source of the issue may be a broken flame sensor. The sensor is responsible for turning off the gas burners to avoid gas buildup. Once this component starts to malfunction, it may stop the burners from igniting altogether.

What causes hot surface ignitor failure?

High Voltage



An 80-volt HSI should have about 80 volts applied to it. Applying 120 volts to that HSI will cause it break, and sometimes almost immediately. Having too low of voltage may not let the igniter burn hot enough.

Can you clean a hot surface ignitor?

It is not necessary to clean a hot surface igniter as it blow off any dust. However contrary to silicon carbide ceramic hot surface ignitor which are very brittle and shouldn’t be touched, silicon nitride hot surface ignitor are very robust and can be cleaned manually iff really necessary.

How do I reset my electronic ignition furnace?





How to Reset an Electric Furnace

  1. First, turn off the power supply to the furnace by turning off the breaker in the circuit box.
  2. Locate the reset button on the furnace and press it to reset the furnace. …
  3. If the button is popped up, press it down.
  4. Return the cover to the blower compartment and turn the power on.


How do you test a spark ignitor?

Quote from the video:
Quote from Youtube video: If you use an analog multimeter set the multimeter to the lowest ohms of resistance. Next touch the probes together and adjust the needle. Until it's calibrated at zero.

How do I clean my furnace ignitor sensor?

Quote from the video:
Quote from Youtube video: So if you have a situation like this what you have 90% of the time is just a dirty flame sensor. So we'll go through the steps on how to clean it. So the right side of the furnace.

How do you manually ignite a furnace?



Once the gas has had time to dissipate, turn the knob to “Pilot.” Then, hold down the “Reset” button and bring the flame of a long lighter close to the pilot light opening. This should light the furnace pilot light. Once you are sure the pilot light is on, release your pressure on the reset button.

Can I bypass a furnace ignitor?

You can bypass the flame sensor. However, if you do so, you can’t manually light your furnace, and you’ve got to have proper bypassing safety measures in place. But it’s advisable not to bypass the flame sensor. Instead, clean or replace it to have it operational.

Why is my furnace clicking but not turning on?

You Have a Faulty Ignition Sensor (Pilot Light)



The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite. This is typically the problem if you can hear your furnace click on but it does not fire up.

How do you light a pilot light manually?



Turn the valve to the “pilot” position. Press and hold the reset button. If the reset button fails, ignite the lighter. Hold down the reset button and bring a grill lighter or long match to the pilot light valve until the pilot ignites.

What do I do if my pilot light won’t light?

If your pilot light won’t stay alight, it might be the thermocouple. Sometimes dust buildup collects on the thermocouple and blocks the sensor. Try cleaning the thermocouple and then relighting the pilot light. If it continues to go out, the thermocouple might need to be replaced.

How do you relight an automatic pilot light?

Quote from the video:
Quote from Youtube video: Procedures for the majority of natural gas standing pilot furnaces. Turn the furnace power switch. Off carefully remove the furnace. Door look for a pilot flame. If. There is no pilot flame.