M
mikehiow
Hi, I am neither a plumber or a gas engineer, but hope to call on your collective experiences in the hope someone may have experienced this issue or have any ideas as to the cause.
Sunday night my Carbon Monoxide alarm went off, I quickly shut the boiler and gas off and opened all the windows. The firm that installed the boiler came out Tuesday morning and could not find any fault nor any sign of a carbon monoxide leak.
To rule out the alarm being faulty, I purchased a new alarm, this time a different model with a digital display and functionality to display peak levels.
The morning after "installing" the new monitor, I noticed the peak was at 35ppm but dismissed it as being a quick snap or a mis-read as the alarm did not go off.
Moving forward to today, I popped out for a few hours, the house was empty and upon my return the alarm is going off. My neighbour informs me that it was going off for a good hour.
Again, I turn the boiler, shut of the gas supply at the meter and call the gas engineer again. The CO meter is reading 96ppm, with a peak of 100 (I assume it tops out at 100, as it seems too round to be an actual reading), I reset it just in case (After opening all of the windows) and place it back inside, it's now reading 46ppm and falling as air circulates through the house.
A short time later, the engineer turns up, checks the ratio in the flue and tells me its a rather healthy 6.5. He stays for a further hour to check around various other places with the boiler running and comes up empty, with a maximum reading of 2ppm above the boiler and 3ppm below the worksurface under the boiler, oddly. Further investigation revealed nothing.
The only other source of gas or in fact any fossil fuel burning in the house is the gas hobs, which had not been used any time near either "event". Next door have since armed themselves with a couple of CO alarms, too. No one smokes inside the house - I am a smoker, but was out both times.
The boiler is a Worcester Greenstar 15 Ri, which I believe is a condensing unit (it has a water outlet) and was fitted roughly two years ago.
FWIW, all windows were shut at the time.
Any help or suggestions would be greatly appreciated, I do not intend on attempting a repair myself obviously, but if I could replicate the issue then I'd be one step closer to getting it fixed.
Thanks in advance,
Mike.
Sunday night my Carbon Monoxide alarm went off, I quickly shut the boiler and gas off and opened all the windows. The firm that installed the boiler came out Tuesday morning and could not find any fault nor any sign of a carbon monoxide leak.
To rule out the alarm being faulty, I purchased a new alarm, this time a different model with a digital display and functionality to display peak levels.
The morning after "installing" the new monitor, I noticed the peak was at 35ppm but dismissed it as being a quick snap or a mis-read as the alarm did not go off.
Moving forward to today, I popped out for a few hours, the house was empty and upon my return the alarm is going off. My neighbour informs me that it was going off for a good hour.
Again, I turn the boiler, shut of the gas supply at the meter and call the gas engineer again. The CO meter is reading 96ppm, with a peak of 100 (I assume it tops out at 100, as it seems too round to be an actual reading), I reset it just in case (After opening all of the windows) and place it back inside, it's now reading 46ppm and falling as air circulates through the house.
A short time later, the engineer turns up, checks the ratio in the flue and tells me its a rather healthy 6.5. He stays for a further hour to check around various other places with the boiler running and comes up empty, with a maximum reading of 2ppm above the boiler and 3ppm below the worksurface under the boiler, oddly. Further investigation revealed nothing.
The only other source of gas or in fact any fossil fuel burning in the house is the gas hobs, which had not been used any time near either "event". Next door have since armed themselves with a couple of CO alarms, too. No one smokes inside the house - I am a smoker, but was out both times.
The boiler is a Worcester Greenstar 15 Ri, which I believe is a condensing unit (it has a water outlet) and was fitted roughly two years ago.
FWIW, all windows were shut at the time.
Any help or suggestions would be greatly appreciated, I do not intend on attempting a repair myself obviously, but if I could replicate the issue then I'd be one step closer to getting it fixed.
Thanks in advance,
Mike.
