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Mend Glowworm 30cxi Heating Pressure Leak

Low system pressure on Glowworm 30cxi?

The system pressure has recently fallen a couple of times down to 0.6 and i can use the filling loop again ok to get back to normal, but i'm concerned what the problem is. I can't see any leaks anywhere... what else could be causing this????
Thanks

Gary
February 2008

Glowworm Glowworm 30cxi Heating, Home Heating Systems Heating Pressure Leak

Thanks for the reply John..I guess that would mean replacing the heat exchanger? expensive!! :-(

Gary
February 2008

Only leaks Gary - if the pressure is constantly reducing. If none are visible, there is a chance that the boiler's internal heat exchanger is leaking, and the water vanishing as steam to the outside.

John
February 2008

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Glowworm 30cxi Low Pressure - Causes & Fixes