carriagehousereno
New Member
So about a week or two ago we started to notice that the hot water temp was a little low. I checked the two dials and adjusted them accordingly, turned the Flame up and the flow rate down as instructed in the manul. Nothing really changed. To give you an idea, we used to have to turn on the cold water to regulate the hot water coming out of the faucet. Now it doesn't even get hot enough to take a comfortable shower. So last night I descaled the heat exchanger by running full strength white vinegar though it for about 20 minutes (again as stated in the manual, I saw elsewhere on here that some folks say to run it through there for at least an hour, so maybe I should try that again). Still maybe only minimal temp increase. Today I took the water valve apart and inspected it, it looks to be operating normally, but i have not purchased the rebuild kit for it yet. I removed and cleaned the burner assembly. Still no improvement. After all that, I called Bosch optimistically hoping to get some troubleshooting help, but they just told me to call a "licensed certified professional" since it is a gas unit they won't discuss tech support with the home owner. (Are you kidding me?) Any help with this would be great otherwise I'm gonna be buying and installing a new one 'cause the fam can't put up with the cool showers like I can.