How do you clean the ignition sensor on a Rheem furnace?

Posted on by David Darling

How do you clean the ignition sensor on a Rheem furnace?

  1. Step 1: Power Down the Furnace. Switch off the furnace switch.
  2. Step 2: Locate the Flame Sensor. Remove the access panel.
  3. Step 3: Remove the Flame Sensor. Disconnect the wire by pulling it off the terminal.
  4. Step 4: Clean the Probe.
  5. Step 5: Replace the Flame Sensor.
  6. Step 6: Test the Sensor.

How much does it cost to replace a furnace heat sensor?

It stops your furnace from letting off large amounts of natural gas if it’s not working properly. If the sensor is bad, it won’t be able to sense heat and will turn the furnace off. The average cost to repair or replace a flame sensor is between $75–$200.

When should I replace my flame sensor?

Note: According to HVAC.com, the expected lifespan of a flame sensor is about 5 years. Most furnaces last anywhere from 10 to 20 years. That means that you will have to replace a flame sensor 1x, 2x, or even 3x during a furnace’s lifespan.

How do you know if furnace sensor is bad?

6 Signs of a Malfunctioning Gas Furnace Flame Sensor

  1. Yellow Burner Flames. Open up or glance through the peephole of your gas furnace to see the color of the flames firing up in the burner.
  2. Rusted Flue Lines.
  3. High Utility Bills.
  4. Water Leaks.
  5. Old Age.
  6. Constant Thermostat Adjustments.

How long do heat sensors last?

What does a flame sensor do on a gas furnace?

The furnace flame sensor is a short length of thin metallic rod found inside the burner assembly. 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 prevent poisoning and potential gas fire.

How to fix flame sensor on furnace?

Furnace burners turn on but go out after a few seconds

  • Soot and other debris is covering the end of the sensor (cleaning the flame sensor may fix this issue rather than a flame sensor replacement)
  • Tip of flame sensor is black
  • Porcelain/sensor casing is cracked

    • How to replace Rheem furnace ignitor?

    Loss of fuel. If you have a gas or oil furnace,check to see if the fuel is lost.

  • Blocked or closed gas valves. Checking to see if any valves have been closed.
  • Overheating. Your furnace will become overheated if not receive enough airflow.
  • Dirty flame sensor. A dirty RHEEM furnace flame sensor also can cause the furnace to shut off.

    • How to tell if flame sensor is bad?

    Cracked porcelain on the flame sensor.

  • Corrosion and/or soot on the flame sensor.
  • The furnace shuts down several seconds after lighting up.