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Hi Dan. I would be interested to know exactly what it is and how it works. Just to mention a couple of interesting points... I noticed when the Intergas guy installed the brand new PCB, he had to stick on a new terminal block diagram. It seemed slightly different to the old one with...

So does anyone know what this elusive link 4-5 is on the X4 connector? What exactly is it's purpose? In the manual, it is labelled as "External Saving Switch (remove connection)" with what looks like a picture of a crescent moon.

Ahh, ok.. got ya! :wink:

Whats the "Closed section" ? :?

Should I set it to P1 = 1 and leave 9 and 10 in?

Hi Dan, I'm almost certain P1 = 3. I went through all parameters just to double check they were set to default, when Intergas guy left, as he had changed the PCB.

Update.... Official Intergas service engineer came over this morning. After a lot of head scratching, 3 cups of tea, about 6 calls to the Intergas technical department, changing sensors S1, S2 and the PCB.... .....Still NOTHING!, the boiler sat on operating mode 1 after its initial run...

Hi Dan. The boiler is in a kitchen extension, on the corner where the side and rear wall meet. the two pipes rise up to almost ceiling height, go through the back wall and into the downstairs bathroom which is behind. There is a box in the top right corner of the bathroom where all the...

Just out of interest, if any of you forum members who have experience with Intergas were to install this boiler, what values would you set on the parameters menu, and expect to work when installing and commissioning this boiler on the following system, assuming it is all wired and plumbed in...

Hi TheBaker, That is an interesting point and makes sense. I tried increasing parameter 8 but unfortunately it made no difference.

Dan, I tried it on hot water only mode on the programmer this morning ( this being a cold start before any of the usual premature shut downs). It ran, but only for 2 minutes, maybe less. Then shut down and showed a code "1" on display. I then tried just central heating, with room stat...

Hi Mehran, The tech guy told installer that Value F should be set at 70, I checked and it was. So assuming this is the flow temperature, yes it is set correctly. I am pretty sure the pump is not wired direct to the boiler. I think the pump runs if turning up room thermostat and heating...

Thanks, I just have a feeling that someone who knows these boilers well will probably notice what's wrong right away. I may need to take you up on your offer if we don't get anywhere with it this week.

Also, I am pretty sure the pump hasn't been wired back to the boiler, as the installer mentioned that he may wire it direct later on when I told him about there being parameters for the pump setup.

I did buy an external temperature sensor, but decided against fitting it as installer was told by Intergas sales rep that the sensor isn't ideal for the Open Vented model. I have also read previous threads where it made boilers act funny, so I wasn't too bothered about not not having it. So...

Hi Dan. Yes I know, and I did request that he come over again and go over each and every wire again, just to be sure. He claims he has been through it twice already on the previous visits and knows it is all as it should be, even though one of his employees did the wiring originally...

By sensor, do you mean the tank thermostat?

Update... Spoke to installer today, and he has been back in touch with Intergas. He managed to talk to someone different on the technical team who he said was much more knowledgeable than the guy last week, and sounded like he actually had some hands on experience installing the boilers...

I agree, that's what makes it even more frustrating. Knowing the boiler is most probably fine, but just been installed or setup incorrectly. I don't regret going for one of these though, the quality of design and engineering is apparent as soon as the cover is off. :)

I will keep the updates coming for sure and thanks, I will need an Intergas expert if no one else can sort this out soon.