Question about Rheem M206A 206K BTU Pool and Spa Propane Gas Heater

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Rheem 206 propane heater will not fire has code #sns what is the problem? the water is 65 degree.

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SNS means the temp sensor is out of acceptable range. Could be the following:

1. Water temp is below 36 degrees F
2. The sensor contains 2 thermistors, if they are more than 2 degrees apart and SNS failure will occur
3.Loose or corroded connection at P1 on the main board
4. If the sensor has come out of the JACO fitting on the header, it may read a SNS failure.

Solution, visually inspect the connections for corrosion. If it looks ok, then replace the temp sensor.

Posted on Jan 07, 2011

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Posted on Jan 02, 2017

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Getting a sns code on control panel display. Where is the sensor located on this pool heater?


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Copy following link for troubleshoot resources:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

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1 Answer

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I believe error code C7 is same as error code 76

Add a comment for more free help.
Also take advantage of fixya expert assistance live.
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Fixya is always less expensive than a service call.

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