Main 30 HE flow issue

[jelboy]

Hi guys

I wonder if anyone could please shed some light on this issue...
Main 30 HE combi fine on HW, and CH fires but very quickly reaches max temp (80) iirc
Baxi tech help went much help tbh, stating the bloody obvious as usual (restriction, etc)
I have changed the pump, which made no difference and the pressure is fine so its not an expansion issue
Basically, when the CH comes on the heat doesnt leave the boiler... Its almost like a valve has been closed, but it hasnt! No recent work in house and water in system is clean as a whistle. No air in system and diverter pins both work fine!
So, anyone that has an inkling as to what this might be please reply to this thread
Thanks in advance
Jelboy

 

[Rickster123]

This plumbing forum will not provide advice to anybody with regards to boiler repairs or any other form of gas plumbing without you first providing us with your Gas Safe Registration number in a thread - for very obvious reasons. If you're not qualified to touch gas, you should stay well clear of trying to!

 

[jelboy]

Apologies - My gas safe number is 217141

 

[Rickster123]

Apologies - My gas safe number is 217141

Perfect. Mate get your post count up to 10 posts and then PM gasman with your gas safe details.