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Check your 2port or 3port valve is still open when the boiler shuts off an they start to cool,this should tell you wether the thermostat is still calling for a demand,could be worth checking with multimeter your getting 240 on the orange in your wiring centre.
*just re read you said the boiler LED is continuously orange which would indicate the call for heating has gone,what room thermostat do you have?
*just re read you said the boiler LED is continuously orange which would indicate the call for heating has gone,what room thermostat do you have?
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