The service engineer hss actually been very good and has spoken to the manufacturer twice already. They have made suggestions for adjustments, none of which have worked, so I am happy that he is doing his best, but it is very tricky one as it is intermitent. He has only been able to witness the...
I have an ultracom 24 hxi boiler which has been making a very loud groaning noise and heavy vibration intermittently on start up. The noise can last for up to 4 minutes. The flame in the furnace is orange during the noisy period, suggesting the gas/air mix is wrong. The noise and vibration stops...