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Thermostat Valliant GB221 H?

Would anyone know how to control the thermomstat for a Valliant GB 221 H boiler? Having a nightmare with central heating being off and on at random times!!!!

SianyArmani, April 2011

home Fix label Heating label_important Home Heating Systems category Valliant

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home Fix label Heating label_important Home Heating Systems category Valliant

Thermostat Valliant GB221 H?

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Thermostat Valliant GB221 H?

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Thermostat Valliant GB221 H?

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