H2O Heater Regulator Unlock

[Sunspot Baby]

I have a Bosch 38B tankless water heater. Unit has worked fine but now I can't light the pilot.

Product manual trouble shooting guide indicates the regulator may have seen higher than norm PSI. Says it happens with propane sometimes, and that the regulator is "locked" and that I should see my gas service person.

Well, the only gas service person on this boat is me and I don't know how to unlock the regulator.

Anyone here have experience and can tell me the procedure?

George

[Morgan Paul]

George this might help.

http://boschheating.com/Portals/7/Te..._regulator.pdf

From here.

Bosch AquaStar 38B Service Bulletins

Good luck

Paul

[Sunspot Baby]

Thanks. Looks perfect.

George

[bill good]

Had same & it was rust on the over heat sensor connection. I would start with that first. A simple short across the terminals will allow the pilot light to work. See the test for this in Pauls reply.

Regards Bill

[Sunspot Baby]

A new regulator was the solution. No mater what I did, I couldn't get gas downstream form the regulator.

FIW, don't tell Bosch tech support you're on a boat. Support ends there. Something about not being approved for marine application, no liability, etc.

Next time I will tell him it is in a bath house :-)