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Mend EcoTech 837 Heating Pressure Noise

EcoTech 837 pressure goes into red when heating/hot water is used?

and pump is making a strange noise

chris
September 2010
EcoTechEcoTech 837Heating, Home Heating SystemsHeating Pressure Noise
Expansion vessel needs re-charging/replacing.
I have this self same boiler and the vessel seems to be the notorius weak point.

Carefree
September 2010

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EcoTech 837: Pressure & Pump Issues