vaillant ecomam 824/2e

Joined
21 Dec 2007
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Yorkshire
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United Kingdom
seem to be having a problem with my vaillant ecomax 824/2e boiler, regardless of what i set the hot water temperature at the temp goes over 80 degrees when the hot tap is left running. this is affecting my thermastatic shower i.e. the water goes cold when it detects temperature of more than 80 degrees. have tried resting boiler with no effect. any ideas?
 
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Control problem. could be potentio meter not working, dodgy thermistor, or board. Thermistor would be my first guess, also easiest to check.
 
Thanks for that. Unfortunately we didn't get any info on the bioler when we moved into the house, but when the status button is pressed it reads 5.30 or 5.17 - could these be fault codes?
 
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I think you would be better off by finding the plate heat exchanger blocked !!!

Tony
 

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