BoilerFaultCodesThe 6 most common faults
Your boiler has detected trapped air inside the pipes or a sensor issue, which is preventing it from heating your water correctly.
Check the boiler pressure gauge and top up to 1.5 bar if lowBleed your radiators using a radiator key to release trapped airRestart the boiler to see if the fault clears
Your boiler has detected trapped air in the system or a faulty temperature sensor, causing it to stop heating to prevent damage.
Check the boiler pressure gauge and top up if below 1.0 barTurn off the boiler and bleed any air from your radiators using a radiator keyRestart the boiler to see if the air lock has cleared
Your boiler has detected trapped air inside the pipes or a sensor issue, which is preventing it from heating your water correctly.
Check the boiler pressure gauge and top up to 1.5 bar if it is lowBleed your radiators using a radiator key to remove trapped airRestart the boiler to see if the fault clears
Your boiler has detected trapped air in the system or a faulty temperature sensor, causing it to stop heating properly to prevent overheating.
Check the boiler pressure gauge and top it up to 1.5 bar if it is low.Bleed all radiators in the house using a radiator key to remove trapped air.Restart the boiler by turning it off and on again to see if the code clears.
Your boiler has detected trapped air in the pipes or a fault with the sensor that monitors water temperature, causing the system to stop working to avoid overheating.
Check the system pressure is between 1.0 and 1.5 barBleed all radiators in the house to release trapped airLocate the manual air vent on the boiler to ensure air is purgedReset the boiler by pressing the reset button
Your boiler has likely stopped working because it has overheated due to trapped air or a pump that isn't circulating water properly.
Check the system pressure and top up if it is below 1.5 barBleed all radiators to remove trapped airBleed the boiler's internal pump if accessible via the manualPress the reset button to see if the boiler restarts
on the Daikin EKOMBG 22
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 Daikin 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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