Worcester bosch 8000 32kw Problems

Hi,
Was wondering if any of you guys can help me please.
I have a Worcseter Bosch 8000 32kw Combi boiler installed 6 weeks ago.

It is controlled using a Bosch Easycontroller smart Room stat hard wired in to the boiler. And I don't have weather compensation enabled

OK so what's happening, here's an example.
Let's say the room stat is showing room temp of let's say 17c, and I put the target temperature I want the room to be of let's say 21c

The boiler starts up then after usually just a rise in room temperature of only around 0.5 of a degree c, the flame goes off, then there is a short wait of around 3 minutes, before the flame comes back on and stays on then until the desired room temp set to 22c is achieved.
So it appears the boiler doesn't modulate the first time it comes on and switches flame off after only a 0.5 degree rise in temp
But
It modulates the second time it comes on.
I've had the WB engineer out 4 times, and sll I am getting off them are stalling tactics, saying their tech team are looking into it, but I get the feeling they haven't a clue!

Any of you guys out there have any experience of these boilers with Easy control smart stat.

Thanks

Did you ask your installer? My guess would be it’s trying to work out how much it needs to raise the temperature by. @martyndc88 may know.

Thanks for your reply,
Installer hasn't a clue, do using WB 12 year warranty
I was always a great fan of Bosch, but their communication skills are pathetic
Would be great if @martyndc88 can throw some light on it mate

Chainsawcharlie said:

I was always a great fan of Bosch, but their communication skills are pathetic

Click to expand...

I haven’t spoken to their technical support for a while but always found them knowledgeable. Perhaps things have changed? (Martyn who I have copied into the conversation works for WB, or he used to).

Brill mate, many thanks