BoilerFaultCodesThe 6 most common faults
Your boiler has stopped trying to light because it failed to detect a flame, meaning you currently have no heating or hot water.
Check that your gas supply is turned on and other gas appliances like the cooker are working.Locate the reset button on your boiler control panel and hold it down for 5 to 10 seconds to restart the ignition process.Check your condensate pipe outside to ensure it is not frozen or blocked, which can prevent the boiler from firing.
Your boiler has temporarily stopped working because the amount of water inside the system has dropped too low to run safely.
Locate the filling loop (two valves connected by a flexible silver hose) underneath your boiler or nearby pipework.Slowly open both valves until you hear water flowing and the pressure gauge on the front of the boiler rises.Stop filling when the needle reaches the green zone (usually between 1.0 and 1.5 bar) and firmly close both valves.
Your boiler has stopped working because the water pressure inside the system has dropped too low.
Locate the filling loop valves attached to your boiler or nearby pipework.Open the valves slowly to let water into the system until the pressure gauge reads between 1 and 1.5 bar.Close the valves firmly and check the gauge holds steady.
Your boiler has completely lost power to its control panel, meaning it is switched off and will not provide heating or hot water.
Check that the fused spur switch supplying power to the boiler is turned on.Check your home's main fuse box or consumer unit to see if a trip switch or fuse has blown.Press the reset button on the boiler if power is restored but the display remains blank.
Your boiler has tried to start up multiple times but failed to ignite the gas safely, so it has locked itself out to prevent any issues.
Full guide for Ignition Lockout [16]Your boiler has tried to start up several times but failed to ignite the gas safely, so it has temporarily shut itself down.
Full guide for 16on the Ideal Evomax
Based on parts cited in our fault code database. Your engineer will confirm what's actually needed after diagnosis.
Call a Gas Safe engineer if…
- You can smell gas or see signs of a leak
- The Ideal shows an Emergency or High severity code
- The boiler keeps locking out after repeated resets
- You've tried the DIY checks and the fault hasn't cleared
- There's visible water leaking from the boiler
- The flame is yellow or orange instead of blue
Avoid the next call-out bill
Monthly cover means no unexpected bills when your boiler breaks down.
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