BoilerFaultCodesThe 6 most common faults
Your boiler has failed to light a flame and has locked itself out for safety.
Check if your gas supply is active (e.g. check other gas appliances or credit on your meter)Press the Reset button on the front of the control panelEnsure the condensate pipe (outside white pipe) isn't frozen if it is currently sub-zero temperatures
Your boiler has detected that there is not enough water pressure or the water isn't moving through the system correctly, causing it to shut down for safety.
Check the pressure gauge on the front of the boiler; it should be between 1.0 and 1.5 bar.If the pressure is low, use the external filling loop to top up the system with water.Restart the boiler to see if the fault clears.
Your boiler has likely overheated or a sensor has detected a temperature issue, causing it to shut down for safety.
Locate the reset button on the control panelPress and hold the reset button for several secondsEnsure your radiator valves are open and that the system pressure is between 1 and 1.5 bar
Your boiler has detected that the water inside the heating system is getting too hot and has shut down as a safety precaution.
Ensure all radiator valves are fully open to allow water to flow.Check that the boiler pressure is between 1.0 and 1.5 bar on the gauge.Restart the boiler using the reset button once it has cooled down.
Your boiler has detected that there is not enough water in the system to operate safely, which is usually caused by a small leak or air being bled from the radiators.
Locate the external filling loop beneath the boiler (usually a silver braided hose with small valves).Slowly open the valves to allow water into the system while watching the pressure gauge.Close the valves tightly once the pressure gauge reaches between 1.0 and 1.5 bar.
Your boiler has shut down because its internal temperature has become too hot, which is a safety feature to prevent damage.
Check that your radiator valves are openEnsure there is enough water pressure in the system (typically 1.0 to 1.5 bar)Turn the boiler off and on again to see if the fault clears once it has cooled down
on the Ravenheat TS 100
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