Good morning. I have recently bought a Bosch tanklesss water heater from Costco in Cabo San Lucas. This unit is to help heat a hillbilly hot tub I have built in a rural part of southern Baja, off the grid and lovely.
I have installed the heater and it is igniting for 10-20 seconds and then going out. I have measured the water flow and it is about 2 qts in 15 seconds. I tried to get help from Bosch but they are useless. They want me to be in front of the unit, to have a "professional" with tools available, etc. IF I had access to those things, I would have them!!! I am in the boonies and have to rely on myself and, hopefully forums like this for suggestions on troubleshooting my problem.
The Bosch Model is a Confort II 13. This unit does not show on the Bosch website, it is made in China and may just be distributed in Mexico, I don't know. But with it being sold by Costco, I figured I was in pretty good shape as far as being able to return it if need be. I have a few neighbors that have similar units as a sole heater for their larger hot tubs and they are pretty pleased with the results. For the record, I had an Aqua Star tankless heater down here for over 10 yrs and was basically satisfied with it, especially after I added a rv pump to boost the flow.
Anyway, what ever you can suggest will be appreciated. Thanks, Floatflyer