Ideal Logic L2 Fault Codes Explained (How to Fix L2 on Boiler)

If you’re seeing the Ideal Logic L2 fault code displayed on your boiler (e.g. on an Ideal Logic combi 30), this guide to going to cover everything you need to know to get it fixed as soon as possible. 

Boilers show fault codes to give a repair engineer an indication of the problem. In the case of the Ideal Logic L2 fault code, there’s a problem that’s causing the flame in your boiler to go out. The root causes can be wide-ranging, but essentially, the boiler can’t establish a flame (and it’s most likely ignition-related).

Regardless of the fault code you’re seeing, your boiler will probably lock out and won’t work until the problem is fixed, and the boiler is reset.

NEED A NEW BOILER? If your Ideal Logic boiler is old, unreliable, and you’re leaning towards a replacement, you can get fixed quotes for new boilers by filling out this anonymous, 90-second questionnaire from Heatable.

Ideal Logic L2 Fault

How To Fix The L2 Error Code On Ideal Boilers

One of the most common Ideal boiler fault codes, the L2 fault code may relate to a gas supply issue or a problem that requires the boiler to be taken apart.

For this reason, you’ll need to call a Gas Safe boiler repair engineer to fix the problem.

L2 on Boiler - how to fix it

What Causes The L2 Boiler Fault Code?

Flame Sensor Failure

The flame sensor on your Ideal Logic boiler could be to blame for the L2 on your boiler.

Your boiler is controlled by the Printed Circuit Board (PCB). If the PCB doesn’t receive a signal from the flame sensor that a flame is present, it’s going to shut off the gas supply and trigger the fault code.

Your engineer will need to test the flame sensor to ensure it’s working correctly. If it isn’t, the fix is a simple case of switching out the old flame sensor for a new one.

Gas Valve Fault

On some occasions, the L2 fault code could have been caused by a disabled gas valve.

The gas valve regulates the flow of gas into your boiler. It opens whenever you turn on your heating or hot water, and closes when you turn them off.

Since the gas valve comprises moving parts, over time it can become stiff, or get stuck. If you’re getting the L2 fault code from your Ideal Logic boiler, it’s possible that the gas valve is stuck in the partially closed position when it should be fully open. It’s, therefore, not keeping up with the gas demand of the burner, and the flame is going to go out.

Your boiler repair company may be able to free the valve. However, the cost of labour for a repair isn’t cheap, so on most occasions, it makes sense to replace the gas valve. Typically, this is going to cost around £300.

If the gas valve and other parts are failing, it might be worth considering a replacement. You can get prices on you screen for a replacement boiler using this clickable form.

Low Gas Pressure

If you’ve had a new, large-capacity boiler fitted, it might be that your gas main hasn’t been upgraded to the modern spec and your boiler isn’t getting the gas it needs. In this case, you’ll have to upgrade the gas pipe to one with a larger diameter.

However, it’s also worth checking the gas pressure into the property. It’s also possible be that the gas supplier isn’t providing gas into your property at a high enough pressure. If this is the problem, you’ll need to contact your gas supplier.

Condensate Pipe Blockage

During chilly winter months, it’s typical for condensate pipes to freeze over. The condense pipe allows condensed (and harmful) gases to escape from your boiler. If gases are not escaping because the condensate pipe is frozen, your boiler becomes dangerous. And that’s why it may be displaying the L2 fault code and locking out.

If the condensate pipe freezing over is the problem, it can be fixed by thawing it out with warm water. Once done, your engineer will be able to route the pipe as close to vertical as possible. Condensed gases will flow quicker, giving them less chance to freeze. And as an extra precaution, they can use lagging to protect the condensate pipe from the elements.

Gas Meter Blockage

Like the condensate pipe, the gas meter is prone to problems during winter months, and this could be the issue that’s triggering the L2 fault code on your Ideal Logic boiler.

On the gas meter, your boiler repair company will want to pay attention to the regulator on the meter. And as with the condensate pipe, they’ll want to lag the meter, or box it in to protect it from the elements.

Once they’ve done this and the meter’s regulator thaws out, they’ll be able to reset your Ideal Logic boiler to clear the L2 fault code.

Will You Need To Replace Your Ideal Boiler?

It’s unlikely you’ll need to replace your boiler if you’re getting the L2 fault code. However, there are some instances where it might make perfect sense.

For instance, if the gas valve has failed (and a replacement is needed, at a cost of around £300), other parts are deteriorating and your boiler is out of warranty, a more cost effective long term solution would be a replacement – you can get fixed prices on screen for a brand new boiler from £1,770 here.

Heatable new boilers

Can You Fix L2 on Boiler? YES

Thanks for reading our guide to the L2 fault code on Ideal Logic boilers.

Still need help, or seeing other Ideal boiler fault codes? You can get in touch with a heating engineer.

Prefer to switch your old boiler for a new one? You can use this clickable form to get fixed prices on-screen in minutes.

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