BoilerFaultCodesThe 6 most common faults
Your boiler has failed to light and has shut itself down for safety, meaning you currently have no heating or hot water.
Check that your gas pre-pay meter has credit (if applicable)Check that other gas appliances, like a hob, are working to ensure gas supplyPress the reset button on the boiler control panel for 5 seconds
Your boiler has detected that there is not enough water circulating through the system or the pressure is too low to operate safely.
Check the pressure gauge on the front of the boiler; it should be between 1 and 1.5 bar.If the pressure is low, use the external filling loop to top up the water level.Check that all radiator valves are open and that the pump is not making loud banging noises.
Your boiler has stopped running because it has detected an unusual temperature reading and needs to be restarted.
Locate the reset button or selector switch on the front control panel.Turn the switch to the 'R' (Reset) position for a few seconds and then back to 'On'.Wait for the boiler to complete its startup sequence to see if the heating or hot water returns.
Your boiler has stopped working because the water pressure in the system is too low and needs to be topped up.
Locate the silver filling loop (braided hose) usually found underneath the boiler.Gradually open the one or two small valves on the loop until you hear water entering.Monitor the pressure gauge and close the valves tightly once the needle reaches 1.5 bar.
Your boiler has sensed that it is becoming too hot and has shut itself down to prevent damage to the internal components.
Check that all radiator valves are fully open to allow water to circulateEnsure there is enough water pressure in the system by checking the pressure gaugeAllow the boiler to cool down for 20 minutes and then press the reset button
Your boiler's internal computer has encountered a glitch or software failure that is preventing it from running correctly.
Turn the boiler off at the main electrical switchWait for 30 secondsTurn the switch back on and press the 'Reset' button
on the Ravenheat 120
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 Ravenheat 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