John wrote:
"Kevin Poole" wrote in message
...
My son's Glow-worm 30cxi condensing combi has performed perfectly for 3
years.

Today, it didn't fire up. The display was flashing a pressure of 0.4bar,
so he opened the filling valve. He heard some water flow in, but the
pressure barely changed, and the flow soon stopped.
snip

Are both valves opened when you fill it?


Yes - and we tried both the internal and external filling loops.

--
Kevin Poole
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