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My Bosch 2400E tankless water heater will ignite but immediately go back off. At first it worked but then built up condensate in the chamber. After drying it out and putting it back together it hasn't worked for a week. At first I failed to install the drain hose on the outlet side which probably caused the condensate problem. That has been remidied. The reason for not hooking up the drain on the main exhaust was because I used a vertical vent kit which has a drain on it. HELP Me Please.

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  • mdingus2 Jan 10, 2009

    My Bosch 2400E is natural gas. Everything at this point is by Bosch's installation instructions.

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Welcome-
do you have any codes that come across the screen?

tom

Posted on Jan 10, 2009

  • Thomas Jan 10, 2009

    you mentioned that you did everything according to the instructions, which tells me that you have the oringinal manual for the heater. to me it sounds like you have what they call "no flame ionization". and that you can read on how to remedy from looking on page 39 top of the page.



    tom

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