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Thread: tk3 turns on to often

  1. #1
    DIY Junior Member dh100m's Avatar
    Join Date
    Jan 2011
    ontario canada

    Default tk3 turns on to often

    My takaki tk3 works fine but even when the toilets flush it turns on for 5 sec or so then shuts off
    I am on a well with average water pressure of 40lb The company did not respond to my inquiry
    any help would be appreciated

  2. #2
    DIY Senior Member zl700's Avatar
    Join Date
    Aug 2009


    The low pressure in the piping system causes the water in the hot side flowing backwards through the heater. After cold water draw stops, the piping system re-pressurizes including the hot water piping, causing brief flow through the heater. When this happens unit fires as designed since it senses flow through the tankless. A good spring loaded check valve on the cold water inlet of the tankless will solve this issue.
    If Payback is so important to you, why are you not driving a Toyota Corolla?

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