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Mend Vokera Linea 735 Boiler Combi Heat Exchanger

How can i fix my Vokera Linea 734 boiler?

I have theVokera Linea 735 combi boiler which is 3/4 years old. We keep getting problems with the hot water, the boiler heats the water for about 40 seconds then goes off for 10 seconds back on and off until after a few days we can't get it on for long enough to have a shower. Our plumber has changed the heat exchanger at least twice. In December we had all the radiators power flushed. Early January the heat exchanger taken out and rinsed so no muck was in it and a filter put on the water supply. Today the problem of hot and cold water has started again. Has anybody any answers?

Barbara Blakeman
January 2008
VokeraVokera Linea 735Heating, Home Heating SystemsBoiler Combi Heat Exchanger
sounds like its ur thermister on ur hot water side is faulty round 20 plus vat 4 the part

pigeon
February 2008
Its sounds like its your ignition board if the water temp does not go above 50-55 c then it needs replacing, if the temp does not get hot just luke warm then its the heat exchanger

neil
February 2008

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Vokera Linea 735 Boiler - Hot Water Issues