hi I've got a problem with the external 470 capacitor blowing on my Veissmann 100W.. It was changed by Veissmann a month ago but has burnt out again. I understand this capacitor helps prevent random boiler firing due to standing voltages from external controls (pump/ thermostat/motorised valves. So the probkem is probably not the boiler itself). I have checked motorised valves are free to move - is there anything else I can do other than call in the engineer? Any help appreciated.
Viessmann 100W - swl Capacitor blowing
- Thread starter fafman
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