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Mend PulsaCoil A Class Button Light Hot Water Help

PulsaCoil A Class - boost button light won't come on & theres no hot water?

When I press the boost button the light doesn't come on and there is no hot water.
Please can you help me fix it.

john9
June 2011
PulsaCoilPulsaCoil A ClassHeating, Home Heating SystemsButton Light Hot Water Help

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PulsaCoil A Class: No Hot Water & Boost Light Off