boiler fires upfor about 1 minute then shuts down for 10 mins then fires up again from cold its a new boiler but is taking about 2hrs for the rads to get hot flow pipe gets really hot when the boiler fires up .i have tried a new pump as well but still the same ,even just swithed to hot water only to by pass the heating system but stil doing it .is this a fault on the boiler as its only 1 week old
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