Boiler warning lights are usually unfamiliar to you unless you’re reading your user manual when you’ve just had your new boiler installed – which few of us do! When you see a warning light you may either ignore it – thinking it’ll fix itself, or worry – thinking there is something wrong and you’ve got to spend time and money replacing it.
In reality, both responses are likely to be wide off the mark, purely because you have misinterpreted the message being communicated.
Different boiler manufacturers use varying systems and ways of communicating with you, but when you boil it down (excuse the pun!), the messages are relatively few. Knowing what they mean can completely change how you react. For Evesham Boilers, visit https://www.combi-man.com/boiler-finance/boiler-finance-evesham/
Most modern boilers use a range of lights to give you an idea of what is happening inside. If you’ve got a green light shining steadily, it means your boiler is working correctly. Some boilers use blue lights as well to show the same thing, so if this is steady, you can continue doing what you were doing, as all is well! If your boiler starts to flash, you should take note. A steady green light is normal and means everything is in working order. A flashing green light means the boiler is in standby mode. This is also perfectly normal and means your boiler is just waiting for a request from a heating or hot water circuit to fire up. You don’t need to do anything, as it’s perfectly normal for it to flash like this.
Be wary if you notice amber or yellow lights illuminating on your boiler. It’s showing an underlying problem which might seem small at first, but can get complicated if left unattended for too long. There are several reasons why this colour light could illuminate, such as a drop in pressure (commonly due to a leak) or a short-term lockout from overheating or faulty sensors.
The first step to diagnose this would be to look at your pressure gauge – located underneath the boiler on most modern types. When the system is completely cool (meaning you haven’t used any hot water or heating for a couple of hours), the needle needs to sit between the 1 and 1.5 bar marker. Anything lower could show a leak, and you need to top the system back up using the filling loop. If the pressure is fine, then have a good look at your temperature gauge and take the readings to check all is well. If everything seems fine, you can try pressing the red reset button located at the bottom of the boiler. Remember: If it relocks immediately after resetting, you’ll need the assistance of an experienced engineer and shouldn’t keep trying to reset.
