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    Vaillant Ecomax 835 Hot Water Piping hot then luke warm

    ITS AN AUTO PUMP BUT YOU CAN SET IT TO MAX OUTPUT, USING AND GO TO D14, SET = TO 5 AND PUMP WILL RUN AT MAX CONSTANT...WORTH A TRY ?
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    Vaillant Ecomax 835 Hot Water Piping hot then luke warm

    CHANGED SEAL AND HOT / LUKE WARM STILL PERSISTS. MY PROB IS THAT THE BOILER IS THE HIGHEST POINT ON THE SYSTEM AND PRONE TO AIRLOCKS. bUNGALOW WITH A DORMER AND BOILER IS IN THE DORMER...AH WELL GAS SAFE BLOKE IT IS...BUT THANKS AGAIN FOR REPLIES.
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    Vaillant Ecomax 835 Hot Water Piping hot then luke warm

    ONE MORE THING WHERE ABOUTS IS THE FILTER TO HAVE A LOOK AT THAT.
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    Vaillant Ecomax 835 Hot Water Piping hot then luke warm

    THANKS FOR INFO GUYS, GOT A GAS SAFE ENG TO COME AND LOOK AT IT, CHEERS FOR ALL INFO.
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    Vaillant Ecomax 835 Hot Water Piping hot then luke warm

    I KNOW, STARTED OFF WITH HOT WATER RUNNING COLD THEN HOT ALTERNATE, SO CHANGED CHEAPEST FIRST, NTC'S, TO NO EFFECT, THEN SUSPECTED DIVERTER VALVE, SAME THING NO DIFFERENCE, AT THIS TIME NOTICED NUTS WERE LOOSE ON HEAT EX BURNER, AND WHEN I DROPPED THE AIR SUCTION DOWN IT HAD BEEN MELTED WHERE...
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    Vaillant Ecomax 835 Hot Water Piping hot then luke warm

    HI, I AM GOING THRO SAME EXPERIENCE, COULD YOU LET ME KNOW WHAT IF ANYTHING YOU HAVE FOUND TO DATE. I HAVE JUST CHECKED AND AM GOING TO CHANGE THE HEX SEAL ON THE MAIN BURNER. INSPECTED THIS AS SUSPECTED AIR LOCK AND ITS SHOT COMPLETELY ALL AFTER NOTICING AIR SUCTION INTAKE HAD MELTED AT ONE...
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