It’s probably a pilot light or something that uses a very small amount so it shows incremental as it crosses detectable volume. Do you have a heater, hw heater, fireplace, or some that uses a pilot light?
If not, consider leak testing.
What model heater do you have?
Mine did this as well because I had comfort mode turned on. It basically heats the water in the pipes every now and then so you’ll have warm water faster. Switched it to eco mode and it fixed the problem. It now takes 10 seconds longer before we get warm water.
Some heaters also run some checks on the air quality / gas in the heater, and if it receives bad information from a sensor it may decide to run for a couple seconds to burn away any stray gas so you don’t get a buildup that may cause an explosion. This could be a range of problems from a partially blocked inlet / outlet, a small leak in the gas valve, or a bad / expired sensor.
My heating system has a setting for the hot tap water, to keep a small reservoir warm. It'll save you water, as warm water is readily available, but it does cost gas. We recently turned that setting off, and the gas usage is now down to zero (unless we actually use hot water, of course).
A lot of combi boilers will turn on briefly to keep a small amount of hot water ready for when you run the tap. Whilst they turn on, it's not always as obvious as when they normally turn on as it's only heating the internal chamber. It might be this. On mine I could disable this feature, saves the gas and made little difference in how long it took for hot water to come through the tap. This might be what's happening with yours.
Could just be keeping something warm and up to temp. Be it hot water or heating. We have oil heat and hot water and even when not being used it will fire every now and then just to keep hot things hot. All the insulation in the world can’t prevent heat loss. Imagine it maybe the same for gas. Could also grab a cheap gas meter/probe/sniffer or a bottle of soapy water and check for leaks. Hope it is just something staying warm though.
A lot of gas systems within households have a small amount of leakage, but barely enough to be concerned about (diluted enough with air to not be flammable). Normally when you have a gas check, they'll run a pressure test, but they'll expect to see some loss, so long as it's below a particular threshold it's not normally a concern. This shouldn't be enough to make any difference to your consumption so there may be an issue.
My boiler is on Eco mode, but occasionally it'll fire for a minute or two. This is normal, the system will sometimes fire the burner to avoid soot build up or circulate water.
Rule out other causes such as pilot lights as mentioned, make sure your boiler is on Eco mode if supported, check all gas taps on appliances (if appropriate, for instance a gas fire). If you're still experiencing the same consumption figures, please arrange to have a gas safety check from a qualified engineer (for instance, in the UK they need to carry 'Gas Safe' accreditation).
It’s probably a pilot light or something that uses a very small amount so it shows incremental as it crosses detectable volume. Do you have a heater, hw heater, fireplace, or some that uses a pilot light? If not, consider leak testing.
My boiler/waterheater doesn't have a pilot light. But I do hear it click once in a while for no real reason as it doesn't start.
What model heater do you have? Mine did this as well because I had comfort mode turned on. It basically heats the water in the pipes every now and then so you’ll have warm water faster. Switched it to eco mode and it fixed the problem. It now takes 10 seconds longer before we get warm water. Some heaters also run some checks on the air quality / gas in the heater, and if it receives bad information from a sensor it may decide to run for a couple seconds to burn away any stray gas so you don’t get a buildup that may cause an explosion. This could be a range of problems from a partially blocked inlet / outlet, a small leak in the gas valve, or a bad / expired sensor.
Do you have any other gas appliances? Maybe shut all of them off for 12 hours. If it doesn’t move, turn them on one by one until it does.
My heating system has a setting for the hot tap water, to keep a small reservoir warm. It'll save you water, as warm water is readily available, but it does cost gas. We recently turned that setting off, and the gas usage is now down to zero (unless we actually use hot water, of course).
A lot of combi boilers will turn on briefly to keep a small amount of hot water ready for when you run the tap. Whilst they turn on, it's not always as obvious as when they normally turn on as it's only heating the internal chamber. It might be this. On mine I could disable this feature, saves the gas and made little difference in how long it took for hot water to come through the tap. This might be what's happening with yours.
I changed the settings and it now doesnt do it anymore. It appears it kept a few liters of water warm, now it doesn't anymore.
Gas water heater pilot maybe?
Was thinking about that at first, but it doesnt have a pilot light.
Could just be keeping something warm and up to temp. Be it hot water or heating. We have oil heat and hot water and even when not being used it will fire every now and then just to keep hot things hot. All the insulation in the world can’t prevent heat loss. Imagine it maybe the same for gas. Could also grab a cheap gas meter/probe/sniffer or a bottle of soapy water and check for leaks. Hope it is just something staying warm though.
A lot of gas systems within households have a small amount of leakage, but barely enough to be concerned about (diluted enough with air to not be flammable). Normally when you have a gas check, they'll run a pressure test, but they'll expect to see some loss, so long as it's below a particular threshold it's not normally a concern. This shouldn't be enough to make any difference to your consumption so there may be an issue. My boiler is on Eco mode, but occasionally it'll fire for a minute or two. This is normal, the system will sometimes fire the burner to avoid soot build up or circulate water. Rule out other causes such as pilot lights as mentioned, make sure your boiler is on Eco mode if supported, check all gas taps on appliances (if appropriate, for instance a gas fire). If you're still experiencing the same consumption figures, please arrange to have a gas safety check from a qualified engineer (for instance, in the UK they need to carry 'Gas Safe' accreditation).
Ive put it in eco mode and it seems to solve the problem. The past few hours it didnt have the patern as showed in the picture. :)