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Ok I’ll have a look. Thank you.

I’ve checked none of the wiring has any loose connections but all seems ok. The system has been working great for years until a few days ago, hence why I thought it might just be a faulty actuator head, so all the correct wires should be in the correct place

That sounds like a job for an electrician with the right equipment I think.

Good afternoon, I was hoping someone could help me with a fault on my heating. I am only getting hw from the boiler, not ch. I have replaced the valve head but still getting the same issue. I have locked it in mid position and it then gives me both hw and ch. once I push the hw button on the...