Question about Stiebel Eltron TEMPRA 12 Tankless Water Heater

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Keeps tripping thermal shutdown - Stiebel Eltron TEMPRA 12 Tankless Water Heater

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Most of the time its just bad (thermo disk) thermal shutdown as you call it. If you dont have any hot water at all just unplug the two wires on that disck and stick them together,this bypass that disk. then have somebody turn on the hot water while you watch the heater for any problems. Let me back up just a little.
Before you do that you must know if its tripping while the water is flowing through the heater if it is then its a weak disk. If it trips a few seconds after the water is shut off then for some reason(usually a bad circuit board) the element is not shutting off and over heating the disk. That means the disk is doing its intended job. Do not bypass the disk ifit trips after the hot water is shut off at a faucet.

Posted on Jan 12, 2013

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