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Bosch hot water cutting out

leodlyons
leodlyons Member Posts: 3
in Gas Heating
I have a one year old Bosch Greenstar FS 151 supplying hot both domestic water and a 2-zone radiant floor system. 

Now that the cold weather has started, the domestic water often starts hot then cuts out. 

No error codes at the unit but I noticed that the temp hits 199 then cuts off.

any help would be appreciated 

Comments

  • fenkel
    fenkel Member Posts: 162
    clean out the heat exchanger for dhw..
    Its probably filled with minerals from heating the water up.
  • leodlyons
    leodlyons Member Posts: 3
    Thanks. Do you mean the recommended white vinegar clean out or removing the heat exchanger and cleaning it out?
  • Big Ed_4
    Big Ed_4 Member Posts: 3,076
    Check and clean the cold water intake strainer first ....

    There was an error rendering this rich post.

  • fenkel
    fenkel Member Posts: 162
    Check the screen as perviously mention, then do the vinegar cip..
    (Clean in place)..
  • leodlyons
    leodlyons Member Posts: 3
    Thanks for all the help. I ended up removing the heat exchanger and flushing it out. Working great now

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