BoilerFaultCodesThe 6 most common faults
Your boiler's internal memory chip is overwhelmed or malfunctioning, causing the main control board to lose track of its settings.
Locate the main power switch or fused spur for the boilerTurn the power off and wait for at least 60 secondsTurn the power back on and press the Reset button to see if the error clears
Your boiler's internal clock or timer control system has encountered a synchronization error, causing the unit to stop running.
Locate the reset button on the control panel.Press and hold the reset button for 5 seconds.Check that your external heating timer or room thermostat is set to 'On' and has power.
Your boiler has detected that the water inside is getting too hot, causing it to shut down for safety.
Check that all radiator valves are fully openEnsure the boiler pressure is between 1.0 and 1.5 barGently bleed any air from your radiatorsReset the boiler to see if the fault clears
Your boiler has stopped working because there is not enough water pressure in the system to operate safely.
Locate the filling loop (a flexible silver hose) underneath or near the boiler.Slowly open the one or two taps/valves until you hear water entering the system.Watch the pressure gauge and close the taps firmly once it reaches between 1.0 and 1.5 bar.
Your boiler has stopped working because the water pressure is too low for the system to run safely.
Locate the filling loop (the silver flexible hose) underneath your boiler.Slowly open the valves until you hear water moving and see the pressure gauge rise.Close the valves tightly once the needle reaches between 1.0 and 1.5 bar.
Your boiler is struggling to get the water in your radiators up to the required temperature, meaning your heating may feel lukewarm or fail to warm up properly.
Check that all radiator valves are fully openEnsure the system pressure is between 1.0 and 1.5 bar on the pressure gaugeBleed all radiators to remove trapped air pockets
on the ECA FELiS FL 50 HM
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 ECA 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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