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Mend Glow-worm 18si Heating Radiators Thermostat

Glow-worm 18si Radiators go luke warm after a few hours?

When I start the 18si early in the morning the radiators become very hot and the house warms. After a few hours, the radiators become luke warm regardless of how high the thermostat is set. The unit fires up as usual but the heat is not getting to the rediators.

Ralph
February 2010

Glow-worm Glow-worm 18si Heating, Home Heating Systems Heating Radiators Thermostat

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Glow-worm 18si Radiators Lukewarm - Fixes