Recent content by learning4fun

Hello. Yes, your description is accurate. The number on the dated (faulty) sunvic actuator is SM5203. I was hoping to trace back the wiring to the junction block but perhaps I should hold out for your thoughts on this ... if it's not a compatible replacement! Thanks for your help on this.

I will trace it back. Thank you so much for your help.

Thanks 'NotBovvered', for your reply. At least I know what the wires on the new actuator represent now! Could you tell me what the wires on the older (faulty) actuator represent also please ... this will help me match up the wires when I make the exchange. Thanks very much

Hello everyone. I have a fully pumped small bore S-plan system controlled by a programmer, cylinder stat and room stat, and two 2-port motorised zone valves. The actuator controlling my central heating zone valve has failed and I need to replace it, however, the closest type of replacement I...