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H150 temperature shooting up 10 degress in seconds

H150 temperature shooting up 10 degress in seconds

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  #1  
Old 06-13-09, 09:53 AM
T
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H150 temperature shooting up 10 degress in seconds

Hi all I'm new at this so please bear with me. I have had an H150 heater for 3 years now. In trying to start it this year all seemed fine except for the following. Once I set my temperature, heates ignites and and shows current temp. Within seconds it will shoot up to the temp. that I set and turn off. Can anyone help?

thx
 
  #2  
Old 06-13-09, 04:43 PM
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Sounds like there is not enough water flow through heater, bypass might be bad, filter might be dirty ect...
 
 

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