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-   -   Bosch Aquastar Tankless Heater (

bleeksny 09-16-2008 10:26 AM

Bosch Aquastar Tankless Heater
I am having issues with a Bosch aquastar 125HX and I am hoping that somebody has some experience with it! The guys athe the Bosch tech support line only seem to be able to direct me to service bulletins which do not quite fit the description of my trouble or fix it. The heater seems to perform flawlessly when the cover is off but is unreliable when the cover is on! This is driving me crazy since I think I have tested everything well. If anyone has some input it would be greatly appreciated! Basically the unit will light and relight immediately after the water has been shut with no problem when the cover is off. Put the cover back on and it will light but not always immediately relight. Once the unit fails too light you have to wait 5 to 10 min before it will light again. Suggestions anyone??

SublimeMasterJW 09-16-2008 05:36 PM

The Unit requires a great deal of draft to heat that water.
Drill some large holes in the cover so the unit can get the right air to gas mix.When you work it with the cover off it can breathe. With it it on it cannot get the correct air/gas mix to make the thing work properly. MY best guess. Another thing is this when you cover it and the heat gets excessive withint the unit and it does brother! it probably shuts down a high limit to keep from melting that cheap cover. My opinion.

mike chaker 09-25-2008 05:40 PM

chek the flame sencore it could be coroided take it out clean it with sand paper this sould resolve the issue

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