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System 2000 domestic hot water

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Hi Larry, The system is not keeping up with hot water while taking a shower. After running the shower for 3or 4 minutes the water coos rather quickly. I suddenly have more shower water pressure but less duration of hot water. Thanks

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  • Larry Weingarten
    Larry Weingarten Member Posts: 3,335
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    Hi @grumpy47 , Have you tried a crossover test to see if the problem might be out in the plumbing somewhere?
    Yours, Larry
  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
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    When is the last time the plate heat exchanger was properly flushed?

    There was an error rendering this rich post.

  • kcopp
    kcopp Member Posts: 4,441
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    Dip tube failure...
    rick in Alaska
  • Roger
    Roger Member Posts: 333
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    Thank you for your question, @grumpy47 .
    Very little heat is reaching your (likely) 40 gallon or larger storage tank. If you have a continuous call for hot water on the manager, it is not your tank thermostat. If you have a plate heat exchanger, it could be the domestic bronze circulator or possibly a fouled plate heat exchanger.
    Your heating pro can probably figure it out quickly.
    Hot water diagnostics start on p.18 in this hot water manual.
    Best,
    Roger
    President
    Energy Kinetics, Inc.
    Larry Weingarten
  • grumpy47
    grumpy47 Member Posts: 5
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    Thanks so much for your help. The system 2000 I have is great and has been so dependable. I have had it for 18 years with very little problems
    Roger