![]() ![]() In most cases, your boiler will shut down to prevent the danger of it from being supplied with too much or too little gas. However, if the gas valve is blocked, seizes up or the connections are damaged, it can’t do its job correctly and therefore, could be the reason your boiler won’t ignite. If more heat is needed, the valve opens up to provide more fuel. This is the part that controls the flow of gas to your boiler. Your boiler won’t turn on if there’s a problem with the gas valve. If the problem’s the thermocouple, you’ll need it to get it looked at and potentially replaced by a Gas Safe registered heating engineer. It’s essentially a safety device to ensure gas does not leak out from your boiler when there’s no pilot light present. the sensor that opens up the gas valve when the pilot light ignites. If you still can’t ignite the pilot and your boiler won’t turn on, there could be a problem with the thermocouple, i.e. Pilot light on boiler not firing up still? If you’ve tried reigniting the pilot light, you’ve checked for draughts, and you’ve adjusted the pilot light, then, unfortunately, the problem could be a little more serious. Following the instructions, turn the screw until the flame is blue and crisp. Is the flame on your pilot light present but weak? Refer to the manufacturer’s instructions to locate the screw on the pilot light valve. The problem can be solved by draught-proofing your property and ensuring the cover on your boiler is properly secured. Draughts often come from poorly sealed windows or under doors. Check for potential draughts by lighting a candle and seeing if it blows out. It may sound unlikely, but a draught could be blowing out the pilot light on your boiler. Your heating engineer will be able to advise you on the best course of action and replace the jet accordingly. Boiler pilot light jets are relatively cheap to replace but can also be removed, cleaned and re-installed. If you still can’t light your boiler, there could be debris blocking the jet. Newer boilers will have an ignitor, whereas an older boiler pilot light may require you to light a match for ignition. If the pilot light has gone out, you’ll need to reset it following your manufacturer’s instructions. The pilot light is used to ignite the gas, which heats the water in your boiler and fires up your central heating. One reason why you might not be getting any heating or hot water is if there’s no pilot light on the boiler or the boiler pilot light keeps going out. Are you struggling to get your boiler pilot light to ignite? Can’t get any heating or hot water? Here we’ll explain some simple things you can try if your boiler won’t turn on. ![]()
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