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Thank you that was very helpful, that's all I needed to know. I did as you suggested and low and behold the boiler fired into ignition. Picked myself up a Honeywell wireless thermostat and within 60 mins had wired it all in and all is working perfectly. I now have a warm house, thanks for the...

OK, I figured out what was meant. On the PCB there is a dongle covering pins 2 & 3 to indicate the use of a clock, and by moving it over to pins 1 & 2 it indicates no clock. I did that and still no CH only HW. I read somewhere it could it be the air pressure switch which is located at the top of...

You are correct, but I'd like to give this is a go myself. If this doesn't work, the I will have to I guess. But there is some satisfaction that one gets when a problem is solved without getting in a specialist. Which two pins should I connect and do the other pins remain unconnected? Thanks.

Please excuse my complete ignorance but what exactly do you mean by link? Do you mean I need to connect some pins together on the PCB? Which ones and can I use normal Cooper wire? Thanks.

no I didn't, what is that, sorry?

Thanks, but which external controls? All there is is a clock, and two turn dials temperature controls for HW and CH.

Hello, a complete newbie to this forum so apologies in advance for any silly questions or comments. I have a Halstead Finest Gold, about 10 yrs old now. The CH has stopped working and I'm not sure which way to go. The boiler is showing some very peculiar symptoms. When I turn on the HW both...