tankless hot water heater help

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  #1  
Old 05-30-14, 08:50 AM
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tankless hot water heater help

looking for help i have a tankless water heater i noties when i flush my toilet when its done filling my water heater clicks on for a sec. any ideas how to fix this
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Old 05-31-14, 05:33 PM
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Does it happen if you run the shower?
 
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Old 06-01-14, 06:25 PM
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No if just goes on when the toilet shuts off its like I get a back surge to the tank
 
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Old 06-01-14, 07:54 PM
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I can't imagine why the toilet would do that & not the shower or another fixture. Flush the toilet while the cold water is running in the sink. Does it happen then?
 
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Old 06-01-14, 08:40 PM
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Very rarely a mixing valve is used on a toilet to prevent sweating. In that case a toilet would use both hot and cold water when flushed.
 
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Old 06-02-14, 01:41 PM
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No just when I flush toilet can it be the toilet valve it seems to fill the toilet fast and then the float valve seems to shut hard or fast
 
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