Push the connection nut to the threaded connection where the copper lead connects to the gas line. Wait a while and then turn on the fire. Clean the thermocouple. Using an eraser from a pencil; clean the threads of the nut that connects the Thermocouple to the control valve and then re-tighten. Clean the Burner. Can you fix a thermocouple? To clean the tip of the thermocouple, use steel wool or emery cloth and lightly wash it. Wipe it over the logs to remove leftover soot. Take a picture! Turn the hot water heater back on and relight the pilot light. Remove Thermocouple from pilot assembly, using steel wool or emery cloth to lightly clean the tip removing any soot or build up that might have accorded due to an improper pilot flame. Thermocouple vs. Flame Sensor . Clean the pilot tube with compressed air, following the manufacturer's instructions, if the pilot flame is small or intermittent. Hopefully, you can get to the ends of the thermocouple without having to detach it from the assembly, but you may have to do that. There is no need to seek expert assistance to get the job done. When a thermocouple begins to wear out, it cannot correctly detect if the pilot is lit or not. Lift the protective flame screen off the heater, unscrew the nut and pull out the thermocouple. . Use consistent pressure and continue sanding until the thermocouple's surface is clean. How to Clean a Furnace Thermocouple. Tagged: how to clean a thermocouple . How to Test a Thermocouple. As you can see, you will be able to clean the thermocouple of your patio heater on your own. As for an empty tank, get a replacement. The opposite end of each wire will be connected to the pilot light's enclosure. Clean the ignitor terminal with steel wool or a soft bristle wire brush, being careful not to bend it. With a water hose, rinse the inside of the thermocouple tube, let it air-dry, then reconnect it. The gas valve will not open if the pilot flame is out and the thermocouple is cool. Gas Smell. If you have replaced the thermocouple correctly the fire will light. Step 3: Insert a new thermocouple into the hole in the bracket, steel tube facing up and copper lead down. January 20, 2019 The stove doesn’t stay lit – Thermocouple problem. To clean the threads of the nut that connects the thermocouple to the control valve, use an eraser from a pencil. Related Posts. Please enter your email address. Basic troubleshooting and repair for a central heating system. Using switches and multiplexors also will result in errors, because these devices are normally constructed of copper. The thermocouple, after four to five years of usage, can accumulate dirt and insects. Clean the logs with a damp rag. Vacuum the burner, removing any soot or deposits in the burner orifice or on the burner. After cleaning the thermocouple, inspect the surrounding area and make sure that there is no dust or dirt. Hiland THP-Thermo Thermocouple for Tall Patio Heater, One Size, Grey. The goal is to work off any grit, grime and dust. As patio heater are proper more stylish, the more exotic they are becoming. The thermocouple, after 4-5 years of use, can accumulate dirt and insects. Again this is one of the most common faults in why the patio heater stop working. A thermocouple actually generates a milivolt potential difference when it is heated by a flame.. Just to get that out of the way for any of you newer techs who are used to modern flame sensors. Clean The Thermocouple with a Fine Sandpaper. Sand the ends of the thermocouple with emery cloth sandpaper. Here we’re in this tutorial where we will see how to repair or replace a thermocouple of a hob. How To Clean A Thermocouple On A Patio Heater. If the connections or parts around your thermocouple are dirty, clean them after taking out the old thermocouple and before inserting the new one. Step 4. Use a gas leak detector liquid to find leaks in the supply line, valve or fittings. Turn the gas furnace's thermostat off. Make sure the connection is clean and dry. Cleaning Steps Turn off the power to your hot water heater so that you do not risk becoming injured while cleaning the thermocouple. How-to-Clean-a-Thermocouple-on-a-Patio-Heater Use a Can of Compressed Air. If you smell gas when the flame is not lit, you may have a leak. Use a flashlight to help you see while completing this step. The ends of this piece may be corroded, preventing power from reaching the pilot light. How to Uninstall an Oven Thermocouple. If you are unsure, test the rag in an inconspicuous place, such as the back side of one log, first. can you clean a thermocouple on a water heater? Thermocouples can be very hot from the pilot flame and cause burns, so be careful. Gas valve will not open if the burner look for a central heating system eraser from pencil! 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