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Worcester Heatslave 20/25 oil fired boiler 4 years old, diverter valve renewed 3 months ago.
I don't seem to have any control over my radiator temps they get seriously hot too hot to touch, not sure if boiler c/h stat is working how can I check, I have turned it fully down and it has no impact on the rad temps, I thought if it failed the water would boil and fetch out the over-temp trip, or is my room thermostat catching it before it boils?
Could I test it by shorting out the room stat and seeing if the boiler boils, or is there a better safer way?
I don't seem to have any control over my radiator temps they get seriously hot too hot to touch, not sure if boiler c/h stat is working how can I check, I have turned it fully down and it has no impact on the rad temps, I thought if it failed the water would boil and fetch out the over-temp trip, or is my room thermostat catching it before it boils?
Could I test it by shorting out the room stat and seeing if the boiler boils, or is there a better safer way?
