Discuss Worcester Greenstar 29CDi Classic boiler in the The Welcome Wagon :) area at PlumbersForums.net
Of course, I did. The issue was that the diagram for wiring the HIVE thermostat to the Worcester combi boiler was wrong. Because I've used only the heating channel, the return live had to be connected to the com no 4 on the receiver's pins.Did you remove the old clock?
Picture of your wiring please
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