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Yeah might be worth a try, I did email their help desk as I'm in work and haven't really got time to call them. They just said to contact my installer or go to a local Plumbing merchant. Not the most helpful really, though I will visit one of their approved retailers which is quite near to see...

Hi all, first time poster and hopefully regular in my feeble attampts at DIY. I have a Greenstar si Worcester Bosch combi with a DT20RF Programmer. The wireless thermostat appears to have broke. The screen has gone blank and the receiver on the boiler has a flashing wirless symbol meaning...