BoilerFaultCodesThe 6 most common faults
Your boiler has stopped working because the water pressure inside the system has dropped too low to operate safely.
Locate the filling loop, which is usually a small silver braided hose or a built-in lever underneath your boiler.Open the valves on the filling loop slowly to allow water into the system while watching the pressure gauge on the front panel.Stop filling once the needle reaches the green zone, typically between 1.0 and 1.5 bar, then ensure the valves are fully closed.
Your boiler has stopped working because the amount of water inside your heating system has dropped below the required level.
Locate the filling loop, which is usually a silver flexible hose connected to two valves underneath the boiler.Open the valves slowly to allow water into the system until the pressure gauge on the front of the boiler reaches the green zone (typically 1.0 to 1.5 bar).Close both valves tightly to prevent over-pressurisation and check for any visible leaks.
Your boiler has stopped working because the water pressure inside the system has dropped too low to operate safely.
Locate the filling loop, which is usually a flexible silver hose connected to two valves under your boiler.Gradually open the valves to let water into the system until the pressure gauge on the front of the boiler reads between 1.0 and 1.5 bar.Close both valves tightly and ensure the pressure remains steady.
Your boiler has stopped heating your home or water because the amount of water inside the system has dropped below the required level.
Locate the external filling loop, which is a flexible braided hose underneath the boiler.Open the two valves on either end of the hose one by one to let water into the system.Watch the pressure gauge on the front of the boiler until the needle reaches the green zone (typically 1.0 to 1.5 bar).Close both valves tightly and remove the filling loop if required by your specific model.
Your boiler's wall-mounted temperature controller has lost its connection, likely because its batteries have run out of power.
Locate your digital room thermostat on the wallSlide off the cover or remove the unit from its backplateReplace the old batteries with new, high-quality alkaline batteriesEnsure the unit powers back on and reconnects to the boiler
Your boiler has stopped working because the water pressure inside the system has dropped too low to operate safely.
Locate the external filling loop, which is a silver braided hose under your boiler.Open the small valve or tap attached to the hose until you hear water flowing.Watch the pressure gauge on the front of the boiler until it reaches exactly 1.5 bar.Close the valve tightly to stop the water flow.
on the Ideal Atlantic Combi
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