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Sorry for the late reply to this but I only recently joined this forum for an issue with a boiler. I had a self build done which completed in May 2014 and in that house I had a laundry chute installed. The chute is essentially a hole between the ground and first floor lined with MDF. On the...

The inset at the 4 o clock position isn't significant is it? If you clean it out there isn't a brass screw / bolt in there? Or maybe it's a hole for a drift so you can unscrew the cover by knocking the drift with a hammer anti clockwise? AJ

Be sure to open all hot taps once you have isolated the 22mm supply pipe. This will ensure that any head of water in the pipes will be removed as air will enter via the highest hot water tap when the kitchen hot tap drains, assuming that your kitchen taps are the lowest in the house. AJ

Thanks MrTherm, It was good to get it fixed, a great sense of satisfaction and you are right, just a bit of a push in the right direction was enough. A little secret here, I do have a degree in Chemical Engineering so really couldn't afford to be seen by those freezing in the house to fail in...

Well, I replaced the controller and what do you suppose happened? I turned on the boiler and there was a loud crack from the controller and it shot off its mounting and melted in the process leaving a trailing flame of molten plastic behind. The boiler insulation then caught fire but luckily I...

So, I went home at dinner time and tried the following:- Took out the photocell from the burner housing. Held it tightly in my hand (no light) Started the boiler. Waited for it to fire. Put the photo cell back in its housing before the timeout time The boiler locked out as if it didn't see a...

Terry, is that right? According to the documentation it says:- Extraneous light / premature flame signal : During the pre-purge time, no flame signal may be present. If, however, a signal is delivered during this period of time, the LOA… locks out on expiry of the pre-purge and safety time...

oilhead, to be fair I don't think it was MrTherm who was muddying the waters, more likely me as I mentioned the two different light cell types. I was originally concerned that the photo cell may have needed to see a correctly burning flame and if not then that could cause a lockout. It seems...

Instead of two large screwdrivers I have used a pair of snipe nose pliers with the jaws slightly open so that they fit neatly into the waste from above. This may allow you to get some stilsons on the handles of the pliers while someone else holds the nut underneath the bath with another set of...

MrTherm, Thanks for the link that is really helpful. I don't pretend to understand it all but there are a couple of key bits of information that have sort of helped. 1. The difference between QRB and QRC flame detectors. I have the former and it's merely a light cell. The QRC one is a blue...

Okay, I replaced the photo cell and the same issue exists, lockout after about 5 seconds. Is there any other reason, before I shell out the best part of £40 on a new Landis control box, that the photo cell would not sense the flame? Can it be any flame? What if the flame is very yellow? I don't...

Mr. Therm, Thanks for the quick reply. Am I correct in assuming from your reply that there is nothing else at the stage of the sequence which I have been describing that can cause a lockout? If this is the case, then for the sake of a tenner I may as well try a new photo cell. That's interesting...

Hi Team, I wonder if someone may be able to help with the following issue. The Thermecon boiler is approximately 15 years and in the main performs well. Last year we had a problem with the spark generation to fire the burner. On inspection the HT leads seem to be arcing and the spark wasn't...