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I have old rheem ruud hot water tank. it's down for 4 day's, i would like to get it started, but the thing i would like to find out is can i get it going by lighting it up by using lighter or not. The hot water tank Mod. RR40-38M and the Ser # 1297J32709. Please help me i hade been without hot water for 4 day's. Thank you.


Answers :

Yes you can light it with a BBQ type lighter (long enough).
If it lights and stays lit then you need to change the thermocouple (looks like a little pipe off gas valve)

In simplest terms, a thermocouple is a temperature sensor. Normally \015\012inexpensive, a thermocouple is standard on hot water tanks. If your \015\012thermocouple breaks or you feel it is not working properly, consider \015\012replacing it\015\012\015\012\011\015\012\015\012\011\011\015\012\015\012 b?p=y23r90wnbq7oglkvtnbuhgyhrktxauzqpeoaddsf&t=18g7grtjm%2fx%3d1290445898%2fe%3d2143440281%2fr%3dacont%2fk%3d5%2fv%3d8.1%2fw%3d0%2fy%3dyahoo%2ff%3d2680761980%2fh%3dcg49imfjb250iibzzxj2zulkpsjzmjnsotb3tkjxn09nbgtwve5ivuhnewhys1r4yvv6cxbfb0fezfngiibzaxrlswq9ijq4mtmwnteiihrtdg1wpsixmjkwndq1odk4ota5njiwiia-%2fq%3d-1%2fs%3d1%2fj%3d6f060d4c&u=13gohjn6b%2fn%3df8a.bkwnpkw-%2fc%3d715481.14405591.14260180.13829426%2fd%3dlrec%2fb%3d6235626%2fv%3d1 \015\012lg.php?category_id=6&content_type=article&content_type_id=584031&key_page=1721642411054458764&site_id=1&bannerid=10089&campaignid=2945&zoneid=2&loc=1&referer=http%3a%2f%2fwww.associatedcontent.com%2farticle%2f584031%2fhow_to_change_a_thermocouple_on_your.html%3fcontent_type_id%3d584031&cb=ebe6534afe\015\012avw.php?zoneid=2&cb=1721642411054458764&source=&n=a14de4a9&slice=-1060-&dma=-0-&cty=-us-&content_type=article&content_type_id=584031&category_id=6&key_ad=1045292919&site_id=1&ad_pos=2&key_page=1721642411054458764&ac_url=http%3a%2f%2fwww.associatedcontent.com%2farticle%2f584031%2fhow_to_change_a_thermocouple_on_your.html\011\015\012\011\015\012 rather than installing a new gas hot water heater.

Begin this\015\012 project by shutting off the gas control knob on your hot water heater. \015\012Once you are sure that the gas is off, you should use a wrench to remove\015\012 the nut that attaches the thermocouple to the gas hot water tank. This \015\012nut should appear to be securing a piece of copper tubing or other type \015\012of tubing. With the nut removed, you should also pull down on the \015\012tubing, dislodging it from the thermocouple.

Sometimes there is\015\012 another nut that attaches the end of the thermocouple to the pilot \015\012bracket, if this is the case you should unscrew this nut as well. You \015\012can slide it down the tubing and keep it there until you need to replace\015\012 it.

With the nuts that were holding the unit in place removed,\015\012 you should be able to slide the old thermocouple out of the brackets \015\012that hold it to the hot water heater. You should then take it to a \015\012hardware or home improvement store and find a suitable replacement. Then\015\012 follow these steps to install the new part and fix the hot water \015\012heater.

To change the thermocouple, you should press the end of\015\012 the thermocouple into the pilot bracket as far as you can. If you had \015\012to remove a second nut to remove the old thermocouple, now is the time \015\012to replace that nut securely.

With the thermocouple in place, \015\012you should connect the lead to the control unit. Use the nut you removed\015\012 in the beginning steps to secure the lead. You should then tighten it \015\012at least a quarter turn with a wench to make sure the lead is securely \015\012attached to the control unit of the gas hot water heater.

Now \015\012that the new thermocouple is installed on your gas hot water heater, \015\012turn on the gas shut off valve that you turned off earlier. You should \015\012be able to relight the pilot and the functionality of your gas hot water\015\012 heater should be restored.

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