How To Clean Hot Water Heater Flame Sensor

Remove this using the screwdriver. The probe is fragile, so don't rub too hard.

Ao Smith Gas Hot Water Heater Flame Sensor Repair – Rf Cafe

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This video shows how to troubleshoot and clean the flame sensor in your water heater.

How to clean hot water heater flame sensor. Turn the water heater gas control knob to “off” (see figure 1) and allow the water heater to cool for about 15 minutes. The furnace door can be opened easily, and once opened, you can access the internal part of the furnace. If flame sensor requires cleaning more often then once a year it should be replaced, or check for other problems like vent stack temperature, gas pressure, or primary air need to be adjusted.

Rub the probe with emery cloth or fine steel wool to remove carbon deposits. Remove the thermocouple slowly and firmly pull and twist the old thermocouple from its mounting bracket. The pilot light will subsequently light, and you will likely hear a whoosh where the flame ignites underneath the water heater.

Turn on the water heater. The solution is to clean the sensor using the fine grade steel wool — this way the flame sensing current will get back to normal, which is between 8 and 12 µa. The flame sensor has a coating on it to make it last a long time and will get worn off by over cleaning, so it is best to only clean rod when it is needed.

Unplug water heater and turn off gas to heater using installer supplied manual shut using steel wool, gently polish all metal surfaces of the flame sensor and the ignition electrodes. You have any doubts then you should call your local professional to sh. The manometer will give the pump pressure after approximately 13 seconds.

A dip tube should also be inspected from time to time as the broken tube can cause the water heater to produce less hot water than expected, as it is diluting hot with cold. At some point, you will hear a spark. Before you start cleaning it, the probe will probably have a dull blackish color, and when you're done, it should have a shiny silver hue.

Simply rub the emery cloth over the probe until the soot is gone, and the metal is more or less shiny. Clean the metal surfaces between the cover plate and the water heater. 600 grit wet/dry sandpaper was used to carefully remove all the residue buildup off the flame sensor and other parts so that it looked almost like new prior to being reinstalled.

Vacuum the air filter vacuum the air filter from time to time to remove dust and lint. Remove and clean the rod and ensure you wipe it clean of any particles left over from cleaning. In order to check the top part, you have to remove the inner door and burner assembly.

2 days later and i still can't get the hot water heater to come on (fumes are gone, windows/doors open, and all troubleshooting done). The flame sensor is a thin metallic rod attached with a single screw below the burner. The fv sensor communicates with the gas valve via the fv sensor harness, a black wire with two connectors (usually red/orange), which attach to the prongs on the fv sensor.

Remember, you are not sanding down an auto body, but simply ridding the sensor of any build up it. First, turn off the furnace, and then use the screwdriver to open the furnace door. Clean the sensor glass and the monitoring glass if they are dirty.

I vacuumed the burner assembly thoroughly and then cleaned everything with acetone. 4) figure 4 gasket flame sensor ignition electrodes. Once complete, perform an ohm test from tip to terminal again to ensure that you haven't damaged anything during cleaning.

Depending on the amount of dust or lint in the water heater's location, the air filter may become clogged with debris. Once you have removed the sensor, gently rub the metal rod (only) with soft steel wool or soft scotch brie type pad never use sandpaper as it will damage the flame rod. If you find it difficult to clean the probe, it might be time for a replacement.

The fv sensor will be mounted inside a plastic cap at the bottom center of the heater, beneath the jacket. If your hot water heater stays on, then you’re home free. Several days ago i had painting done in the basement that tripped the flammable vapor sensor (i presume the paint fumes (it was stinky) tripped the sensor).

Ao Smith Gas Hot Water Heater Flame Sensor Repair – Rf Cafe

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