Question about Bosch Water Heaters
Clean your orfice...it sits at the bottom of your pilot burner, where the brass pilot tube screws in to. Its a small stamped piece of stainless, about the size of a pencil eraser. You can also buy new ones online for only a couple bucks
Posted on May 06, 2014
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Posted on Jan 02, 2017
Sounds more like the venturi in the watervalve of the tankless water heater is clogged. I would recommed rebuilding it and paying close attention to properly relubing the pushrod and cleaning the venturi.
Posted on Jan 19, 2009
the pilot is getting too much air and is an indicaiot of dirty or air/ fuel ratio imbalance. The pilot is wimpy and the thermocoupler has alot to do with the gas . Make sure your thermocoupler is on the tip of the flame. You may end up replacing it. because it is showing signs of eminnt failure. When it fals your curners won't fire up. Good luck.
Posted on Jun 09, 2009
there is a small dia copper pipe which has a thermal coupling on it the end of it sits in the flame of the pilot light,
if it fails which it does after about 25-15 months,it shuts down the gas burner
Posted on Jul 05, 2010
Natural Gas: Pilot burner or orfice may need to be cleaned. Pg 11 manual.
Most tank and tankless gas water heaters today suggest annual cleaning and maintenance of burner.
Open following links for Bosch troubleshooting resources:
Posted on Jun 14, 2011
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