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Photo sense light furnace how to#
Photo sense light furnace driver#
Photo sense light furnace professional#

Check the multimeter and see if it shows high resistance.

Step 4: Take the flame sensor and press its open end against a test lamp or a 60 watt bulb.

Step 3: Use a multimeter to show resistance by touching the probes to the white and blue wire ports found on the sensor.

Photo sense light furnace driver#

Step 2: Use a driver or wrench to unfasten the screw that holds the flame sensor in place and carefully pull it out.

If the unit can’t be unplugged, use the breaker found in the breaker box to switch off the power.

Step 1: Unplug the device and locate the sensor.

How do you test a flame sensor?ĭuring routine furnace tune-ups and check-ups, your HVAC technicians will troubleshoot your flame sensors to ensure proper performance and safe functionality, as well as prevent more serious damage to the unit. Once you’re done cleaning, use the cloth or paper towel to wipe the rod down. Next, use the sandpaper, steel wool, or wire brush to rub the rod gently and remove the carbon buildup, making sure you don’t go overboard. Once located, use the driver or wrench to remove the screw and access the sensor. It is a thin, typically bent, metal rod placed in front of the furnace flame stream.

Light grain sandpaper, steel wool, or a wire brushįirst, shut off the power to the furnace and locate the sensor in the burner assembly.

Wrench or driver to remove the 1/4 hex screw (exact tool needed may depend on the type of screw).

If you decide to do it yourself, you’ll need: The easiest way to do this is to rely on your preferred HVAC technicians in Murrieta to clean the sensor during your regular furnace tune-ups. It is likely that your flame sensor problem can be fixed with a simple cleaning. What can I use to clean a furnace flame sensor? HVAC experts can also thoroughly inspect your unit to determine any additional problems and prepare your heating system for the upcoming winter season. Replacing a flame sensor is a simple procedure, but it’s advisable to outsource the job to professionals, lowering risk for preventable issues.

If the sensor insulation is missing pieces or cracked, a sensor replacement is needed.

Inspect the sensor: if the insulation is intact but appears sooty, burnt or slightly corroded, it might only require cleaning.

Photo sense light furnace how to#

Not sure how to tell if your flame sensor is faulty or just dirty? Follow these guidelines to determine which is true: How do I know if my furnace flame sensor is bad? In addition to being highly inconvenient, continuous tampering with a bad furnace flame sensor can cause issues with other furnace parts and reduce overall efficiency. Most furnaces will go into a safety ignition lockout when a shutdown happens three times. If your flame sensor is dirty or faulty, it will automatically shut down the heating unit if it doesn’t detect a flame. Without a flame sensor, your furnace will keep emitting gas even when there’s nothing to ignite it, resulting in hazardous gas buildup.

Photo sense light furnace professional#

If this happens, it is advisable to contact a professional HVAC service provider to inspect your furnace and resolve the issue. If cleaning the sensor doesn’t restore your furnace to working condition, a replacement may be in order. What happens when a flame sensor goes bad? As most furnaces are located in dusty areas, such as basements or laundry rooms, the airborne particles can easily stick to the flame sensor, burn and cause carbon buildup. Since these sensors are designed to have a low tolerance for reading variations, they might misread from the slightest carbon coating. However, often the problem is a dirty sensor, rather than a broken one. Do flame sensors wear out?įlame sensors wear over time. The following brief guide can help you determine if your furnace flame sensor is dirty or faulty, and whether you need expert HVAC assistance in Murrieta. These sensors are typically found in modern furnaces, and other gas-fired heating systems.įortunately, problems with flame sensors are a common occurrence among homeowners, and don’t often require complex heating repair. Does your gas furnace shut down shortly after you turn it on? Does this happen several times before the furnace shuts down completely? If that is the case, you may be dealing with a furnace flame sensor problem.įlame sensors are simple devices designed to confirm the gas valve is only open when there is a fire present, preventing harmful gas buildup.