How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Rick Your Own Question
Rick, Construction Supervisor
Category: Plumbing
Satisfied Customers: 21553
Experience:  Licensed Master plumber with 40+ yrs. experience.
Type Your Plumbing Question Here...
Rick is online now
A new question is answered every 9 seconds

I've changed over to a new gas bottle, and the Bosch

Customer Question

I've changed over to a new gas bottle, and the Bosch controller system is flashing "11" - not getting any hot water
Submitted: 1 year ago.
Category: Plumbing
Expert:  smitty1486 replied 1 year ago.

Hi, welcome to Just Answer. Sorry to hear you are having appliance trouble, I know how frustrating that can be! My name is ***** ***** I look forward to helping you!

  • I suspect you may have air in the line that is preventing ignition and the resulting faults.
  • May I please have your model number so I am able to provide you with accurate, model specific information?
Customer: replied 1 year ago.
The outside unit is a Bosch 21e
Expert:  smitty1486 replied 1 year ago.

Is there another tag anywhere on it with a longer number? What product is this you are having trouble with?

Customer: replied 1 year ago.
It's a Bosch hot water system. The system outside says Bosch highflow 21e and the box inside that controls the temperature says YPRM67XBN
Expert:  smitty1486 replied 1 year ago.

I will get you over to plumbing, sorry.

Expert:  Rick replied 1 year ago.

Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. If my initial response doesn’t answer your question then let me know and we can continue our conversation.

Sounds like you have air in the gas line. You can either cycle the unit off then back on repeatedly until the air works itself out or you can speed up the process by disconnecting the gas line at the unit (shut the gas cock off first) then turn the gas back on until you can smell gas (a matter of seconds usually) then turn the gas back off, reconnect the line and turn the gas back on(soap test your connection). You may still have to cycle the unit a couple more times. Of course no open flames while doing this.