Oil boiler fault diagnosis for lockouts, burner problems and heating breakdowns.
If your oil boiler will not fire, keeps locking out, smells of oil, produces soot or is no longer heating the property properly, it needs proper diagnosis. Avoid repeatedly resetting a boiler in lockout; repeated resets can mask the fault and may make the problem worse.
Roy can inspect suitable domestic oil boilers, explain likely causes and advise whether repair, servicing or replacement is the sensible next step.
Common Oil Boiler Faults

Repair, Service or Replace?
Some faults can be resolved through diagnosis and repair. Others point to poor maintenance, worn service parts or an older appliance reaching the end of practical service life. Roy will explain what he finds and avoid promising a repair before the boiler has been inspected.
If the appliance is due for planned maintenance, see oil boiler servicing. If replacement looks more sensible, see oil boiler installation and replacement.
Before You Contact Roy
Make a note of any error code, how often the boiler locks out, whether there are oil smells or soot, and whether the fault affects heating, hot water or both. Do not remove the appliance case or interfere with the burner or fuel supply.

Oil Boiler Repair Areas
Roy serves Leicester and established nearby areas including Hinckley, Lutterworth, Market Harborough, Coalville, Oakham and Nuneaton, with wider work across Leicestershire, South Leicestershire and nearby Warwickshire subject to the job and availability. Contact Roy with your postcode to confirm coverage.
Frequently Asked Questions
Should I keep resetting an oil boiler in lockout?
No. A repeated lockout needs proper diagnosis.
Can servicing fix a breakdown?
A service is planned maintenance. A current fault needs diagnosis first; a service may then be recommended once the fault is understood.
Can Roy advise on replacement?
Yes. If repair is not practical or sensible, Roy can discuss oil boiler replacement.





