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VAILLANT 837E PRESSURE LOSS?

HI,I HAVE TO KEEP OPEN THE WATER VALVUE TO TOP UP WATER PRESSURE GAUGE,

A.J
January 2010
VaillantVaillant 837EHeating, Home Heating Systems
pressure loss means you have a leak, look for water around the boiler, radiators and aroung relief pipe outside below the flue / exhaust.

Ian
January 2010
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