Main Eco 30 Explosive ignition

[Nas]

Installed this boiler last last week. Got a call back saying it's making a loud noise when starting up. I've checked eveything possible and the main engineer has been as well. he just put some additional insulation around the ignition electrodes, But the boiler still has the same problem. I've phoned the main technical helpline and was to make sure the inlet pressure is not below 18mB which its not its 20mB, other than that they weren't very helpfull.
Does anyone know how to fix this issue on this boiler? or what's causing it. A quick search on the net show its not an isolated incident.

Thanks in advance

 

[Barry98]

Generally I've found it's the ratio s that need adjusting

 

[mountainman]

Generally I've found it's the ratio s that need adjusting

Ive found the same on two occasions.

 

[arran197]

I'd point at that, if your inlet working pressure is ok, check the ignition electrodes and then gas valve adjustment. I think on the Main it's the same as the Baxi Duo Tec, the CO2 needs to be 8.7% on high and 8.4% on low.

Other than that, the ignitor. Had a newish Duo Tec and the ignitor went. Could be early signs if it's weak and not sparking until there's loads of gas in the chamber.

 

[mike_s]

had this with one of ours, they replaced everything, gas valve, igniters etc under guarantee and still no fix, they had to replace the boiler which is fine now so god knows what it was. Crap boiler, fitted about 100 but don't do them any more, loads of trouble.

 

[buckley plumb]

had one that had a delayed spark due to pcb faulty heat team changed ignitor and gas valve and still same then pcb and was ok

ant