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Thread: tk3 turns on to often

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  1. #1
    DIY Junior Member dh100m's Avatar
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    Jan 2011
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    ontario canada
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    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
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    Aug 2009
    Location
    Texas
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    Default

    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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