BoilerFaultCodesThe 6 most common faults
Your boiler has become too hot and has shut itself down as a safety precaution to prevent damage.
Check that all radiator valves are fully openEnsure the boiler pressure is between 1 and 1.5 barPress the reset button on the front control panelCheck for any visible leaks around the pipework
Your boiler is failing to light the gas flame or keep it burning, which has caused the system to shut down for safety.
Check if other gas appliances in your home, like a hob, are working to ensure your gas supply is on.If you have a prepayment meter, check that you have sufficient credit.Try resetting the boiler by following the instructions in your user manual.
Your boiler's internal computer has encountered a critical error or is failing to detect a flame, causing the system to stop working for safety.
Press the reset button once to see if the error clearsCheck that your gas pre-payment meter (if applicable) has creditEnsure other gas appliances in your home, like a hob, are receiving gas
Your boiler is struggling to push water through the system properly, causing it to shut down shortly after the flame starts to prevent overheating.
Check that all radiator valves are fully openEnsure the external pump is running if accessibleCheck the system pressure gauge and top up if below 1.5 barBleed all radiators to remove trapped air
Your boiler has no power and neither the display nor the lights are turning on, meaning the unit is not receiving electricity or a fuse has blown.
Check if your main consumer unit (fuse box) has tripped.Ensure the boiler's isolation switch (usually a red fused spur near the boiler) is turned on.Check if other appliances in the house are working to rule out a power cut.
Your boiler is failing to stay lit because its internal sensors are detecting an unusual temperature difference, causing it to shut down for safety.
Full guide for 2on the Dimplex OV 32
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 Dimplex 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