Worcester G'Star 15 Ri Combustion Performance.

[arran197]

I presume the inspection hatch is that little one at the bottom of the heat exchanger. Mate it's pointless trying to adjust anything whilst it's in that condition. As Worcester say, clean the heat exchanger (good luck) and remember it's compulsory to change all disturbed seals. Should be adjustable after that mate

No, the cover is the one on the top of the case, which allows you to access the neat exchanger with the tool to remove the baffles. Not 100% what the outcome of this was, I need to check and find out as the lead engineer went out to look at it after me. I think the the gas valve just needed adjusting, I have been setting up some JNRs over the past few days and even the slightest movement out of the allowed co2 range and the co goes really high.