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Yes it does seem to be exactly 4 degrees offset from what a normal thermometer reads. Is there no way to adjust the dial the adjust the offset? If not I guess I will probably change it out with a digital one.

It's been running quiet for a few days but today when radiators reached temperature I was getting a sort of humming sound again. A slightly different pitch. At the boiler end it doesn't sound very loud but upstairs through the pipework it sounds bad. It would make the noise for a little bit then...

So I've had the expansion vessel checked and re-pressurized. Apparently it's quite normal for the balloon like vessel to deflate and have these issues. Seems to be ok now. But when boiler is on and heating has been on for a while the pressure does increase a bit compared to what the pressure is...

So basically let me try and explain it a bit better. If I set the temperature on this thermostat to 20° and the room temperature is below 20° then the thermostat is supposed to make that clicking sound at the 20° mark which basically then activates the relay which then turns on the boiler to...

I have a honeywell t6360b1028 thermostat wired as the picture below. Just wondering, is there a reason why this thermostat relay will activate even though the room temperature is higher than what the thermostat is set to? for example if I set it to 15 so I know it's definately off and a room...

Thank you. They replaced the pump without any complaints and it seems nice and quiet now :)

Thank you. Will do that and report back :)

The cover is with domestic & general directly through baxi. I took out the plan through baxi themselves who work with D&G

I've booked in a repair for next week because the boiler pressure is like yoyo. I've put the noise problem in the notes too. So I'll have them look at it when they come. Hopefully they don't try and fob me off with some story about it being an old boiler pump being old causing noise. I'm paying...

Over the years my potterton combi boiler has become annoyingly loud that when boiler is on it makes me want to turn it off. Sometimes there is a slightly different pitch to the noise and I can get rid of that noise by just compressing something against the side of cover of the boiler this...

Thank you. Booked in a service engineer to come and look at it. I requested a service too. What does a boiler service actually include?

Yeh it does come with the 12 months warranty. Strange thing is it did it that one time and after that I haven't been able to recreate the resistance. I may have had the alternator tilted but that shouldn't really cause it though should it? That's a bit worrying about the Lucas Alternators being...

It's supposed to be brand new and looks brand new.

I purchased a brand new aftermarket Alternator for my car. It's unbranded but the label of the model number seems to suggest it's a Lucas Electrical alternator. I have a question for someone who knows about alternators. I unpacked the new alternator and externally looks good build quality. I...

I have a baxi potterton Combi boiler. Just noticed that the pressure was low in the red and I can swear I last topped up a week or two ago. Before that I didn't top up for about a year it was fine. But now since my last top-up I noticed it went low again in the red. As soon as I turn central...

Thanks for the replies yes it seems that this thermostat doesn't need the neutral or the earth so it needs to be parked which are isolated terminals that sent connected to anything. And then it's just the live and no open connection that needed to be made.

I currently have a Honeywell wall thermostat connected to my Combi boiler and the thermostat is wired as in the following diagram (Pin 1 is Common which is the Always LIVE, pin 4 has no wires connected to it, pin 3, 2 and earth all have wires connected. When The thermostat clicks and activates...

Thank you very much. Will give that a try now.

I'm just thinking. When you press the switch on one of these, essentially what happens is that the COM gets directly connected to either L1 or L2 depending on which side the switch is pressed right? So seeing as the switch is wired however it is and it's working but looks like a huge maze. To...

So i've had another close look with a flash light. So it seems like what I thought was black sleevess is actually brown sleeves (very dark brown) And L2 on switch 1 is grey and brown. The grey has a brown sleeve. The two wires from L2 seem to be twisted around each other until they get to the...