DIY Doctor

glow worm swiftflow 100 combi boiler problems

Postby gazkelly » Thu Apr 30, 2009 2:38 pm

Hi, can anyone help me. I have a glow worm swiftflow 100 combi boiler and I cannot get hot water unless I have the heating on, also when the hot water is running I have to keep it to not much more than a trickle or it begins to run cold.
Any help with this would be much appreciated.
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Simply Build It

Postby htg engineer » Fri May 01, 2009 8:32 pm

Gas pressures or diverter fault, possibly split or stretched diaphragm. When the hot tap is running, hold the CH flow - does it get hot ?

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Postby Steve the gas » Sat May 02, 2009 4:19 am

Also possible scale build up in HEX
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