Gloworm 30cxi, f1 fault

[gingalig]

Hi all,
I attended a gloworm 30cxi running on lpg today. Changed the return pipe on the heat exchanger as the rubber connector had gone hard and was leaking all over the place. Boiler fired up ran for 20 secs on dhw then fan increased speed and it went out. Went through the ignition sequence a couple of times and then F1 reset and same again, everything had got pretty wet. Checked connections and the pcb was dry. Had a reading of 11.5 ohms for the return thermistor. Called for heat on heating and it all fired up. it ran fine for about 6 hours but just had a call saying locked out and F1 again. Any ideas. ?? I'm not particularly strong on breakdowns.

 

[ShaunCorbs]

What was the combustion readings ?

 

[gingalig]

What was the combustion readings ?

I'm going back later today and will check. Apparently it was making a lot more noise than usuall before it went to F1. I,m going to check fan operation, just wondered if there was any common issues with the 30cxi that may cause the issue.

 

[ShaunCorbs]

Other than pcb not really other than standard stuff eg electrodes / service items