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Posted by Graham on October 03, 2005 at 13:03:43:
I have an RS40 which has stopped producing hot water and heat. The pilot light is lit and switching the boiler to constant using the controller causes a low hum to be heard (can't locate the source) but nothing happens. The boiler doesn't light and the thermostat control (rotary dial, 1-6 and off) also has no effect.
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