Worcester 77161920540 Si series DT20RF programmer.
Worcester 77161920540 Si series DT20RF programmer.
For Greenstart Si models. In the next tab there is an appliance grid with links to all boilers that contain this part, Please use this if you would like to view all other spares that fit that model and download the user manual for that appliance.
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The Worcester 77161920540 Si series DT20RF programmer is a genuine, brand new Worcester product, covered by a Worcester manufacturer's guarantee.
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