BoilerFaultCodesThe 6 most common faults
Your boiler has stopped working because the water pressure inside the heating system has dropped too low to operate safely.
Locate the external filling loop, which is usually a flexible silver braided hose with one or two manual taps underneath the boilerOpen the tap(s) slowly to allow water into the system until the pressure gauge on the front of the boiler reads between 1.0 and 1.5 barClose the tap(s) firmly and ensure there is no water dripping from the connection
Your boiler has stopped working because the amount of water inside your heating system has dropped below the required level.
Locate the external filling loop, which is a silver braided flexible hose connected between two pipes under your boiler.Open the small valves at both ends of this hose to allow mains water to enter the system until the pressure gauge reads between 1.0 and 1.5 bar.Close both valves tightly to prevent over-pressurisation.
Your boiler has stopped working because the water pressure inside the heating system has dropped too low to operate safely.
Locate the external filling loop, which is usually a small metal braided hose underneath the boiler.Slowly open the valve(s) on the filling loop to allow water to enter the system until the pressure gauge reads between 1 and 1.5 bar.Close the valve(s) tightly and restart your boiler.
Your boiler has stopped working because the water pressure inside the heating system has dropped too low to operate safely.
Locate the filling loop, which is usually a flexible silver hose under the boiler connecting two pipes.Open the valve(s) on the filling loop slowly to let water into the system until the pressure gauge reads between 1.0 and 1.5 bar.Close the valve(s) tightly and restart your boiler.
Your boiler has detected that the water pressure in your heating system has fallen too low for it to operate safely, so it has paused its functions to protect itself.
Locate the filling loop, which is usually a flexible silver hose under the boiler connecting two pipes.Open the valves at both ends of the filling loop to allow water to enter the system while watching the pressure gauge.Close both valves firmly once the needle reaches the green zone between 1.0 and 1.5 bar.
Your boiler has stopped working because the water pressure inside the system is currently too low.
Locate the filling loop (a silver flexible hose) connected to the pipes underneath your boiler.Open the small valve or tap on the loop to allow water into the system while watching the pressure gauge.Close the valve tightly once the needle on the gauge reaches the green zone, typically between 1 and 1.5 bar.
on the Heatline Capriz 24
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 Heatline 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