Recent content by SiCog

Just in case anyone happens upon this later and since most instructions/videos have a different config - after testing with a meter this was wired as follows: Pin 1 (red in photos) and Pin 3 (yellow in photos) were connected to the' low voltage' thermostat terminal on the boiler (~15VAC) and Pin...

So I've traced the RT which goes from the low-voltage on board to a scotch block at the side of boiler connected to a 'L/N' of a supply cable. Then behind the isolator/switch I can see that cable connected via another scotch block to yellow/red cable (can't see the rest of their cable, but I...

You're right on the extra/low voltage - in their defence I posted a grab from an online manual as the printed one is minging

Is it possible this is a 'slave' unit and there's another box hidden away or bypassed somewhere - I'm perplexed by how it is working OK now - give or take a degree or two maybe. I can hear it click in when the room temp is passed. We have two boilers on separate circuits/supply (once was two...

This is the board diagram - I don't have a reliable meter, but mains tester driver isn't lighting on the thermostat connections in any state. It's definitely controlling the boiler properly though.

Hi, I've a Honeywell 6360B attached to a Heatline Combi - I've manuals for both but am struggling. The Heatline is set to use low voltage for thermostat (the 230v thermo connector is jumped) and I can see the two 'switch wires' exiting from the 24v thermo connector but lose sight of them as they...