If you’ve noticed the F2 fault being displayed on the front of your boiler, this guide is going to help determine what the problem is, and what you need to do next.
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What does the Ideal F2 fault code mean?
If the F2 error is being displayed on the control panel, it means the flame has been lost while you’re calling for hot water or heating. There are different root causes to this, compared to error codes that indicate the boiler can’t establish a flame, i.e. it won’t ignite.
We’d suggest calling in a boiler repair engineer to fix the problem. You shouldn’t be taking apart gas appliances without Gas Safe accreditation.
Your boiler engineer will able to determine if the problem lies with the gas valve, fan, flue, or incorrect gas pressure.
We’ll start with the gas valve, as that’s the most common reason for the F2 fault code being displayed on Ideal Boilers, such as the Logic and Logic Plus.
Your boiler engineer will first, want to check that the gas valve isn’t stuck. If it is, it won’t be able to supply the pilot jet and the burner with the fuel they need to keep a flame. Once it goes out, the F2 fault code is going to be displayed.
Sometimes a stuck gas valve can be fixed, but if not, a replacement is likely to cost around £300.
There are other gas valve faults worth mentioning, such as loose and damaged wiring.
The fan in a boiler works by creating a draught. This draught is used to push harmful gases out of the flue, meaning they’re not contained in your property.
A faulty fan is going to mean a dangerous boiler. So much so, that the boiler won’t even fire up if the fan isn’t running. And, the boiler is then going to shut down with the flame being lost.
One common reason that the boiler locks out and displays the F2 fault code, is because the fan speed is too low. This means that not all dangerous gases are being pushed up the flue, and that’s going to mean the boiler locks out immediately.
If there’s not a solid airway for flue gases to escape, then your boiler is going to lockout, display the F2 fault code, and the flame is going to be lost.
One of the things that could cause this, is the flue. Typically, this is the case if a vertical flue (through the roof) has been installed, but a flue guard hasn’t been fitted. This gives potential for debris (leaves etc.) to fall into the flue, causing a blockage.
You can book a Gas Safe engineer to check if this is the case here. They’ll be able to run through the gas valve, fan and flue to determine what exactly is causing the problem.
The strength of the flame in your boiler is going to fluctuate depending on the gas pressure. If it’s too low, the flame will be lost.
A qualified Gas engineer can test the pressure into the meter (from the mains gas), out of the meter, and into the meter, to determine what the problem is.
It could be a mains gas issue (gas being supplied into your property), so you’d need to contact your gas supplier in that case. However, during winter months for instance, the problem could be that the regulator on the meter has frozen. This is going to restrict the flow of gas and cause the boiler to lockout.
There is more than one explanation for why your boiler is displaying the F2 fault code. However, in all scenarios, you’re going to need a Gas Safe engineer, which you can contact here.
And, if you’re fed up of your boiler, or it’s out of warranty and likely to cost over £400 to repair, we’d consider getting a replacement. You can get on-screen prices here, within a matter of 90-seconds.