Boiler Pressure Fault Repair

What boiler pressure fault repair covers

This service is designed to restore correct, stable pressure and reliable boiler operation. It typically includes:

• Checks for pressure loss, pressure spikes and related fault codes
• Inspection of the filling loop, expansion vessel and pressure relief valve
• Testing for leaks on the boiler and visible pipework
• Diagnosis of component or control issues affecting pressure
• Repair or replacement of failed parts (where available and suitable)
• Safety and functional checks before the system is signed off
• Advice on correct pressure levels and simple user checks

When this service is most useful

Book boiler pressure fault repair if you notice any of the following:

• The boiler pressure keeps dropping and needs frequent topping up
• Pressure rises too high when the heating is on
• Water discharges outside from the pressure relief pipe
• Radiators heat unevenly after repeated pressure changes
• The boiler locks out, shows a pressure-related fault, or you have no heating or hot water

What happens during the visit

The engineer will confirm the symptoms, read any fault codes and check system pressure behaviour from cold to running temperature. They will inspect key pressure control parts (such as the expansion vessel and relief valve), check the filling loop, and look for evidence of leaks. Once the cause is identified, repairs are completed and the system is re-pressurised, bled where required, and tested to confirm stable operation.

After the repair

You will be shown the correct operating pressure for your system and how to monitor it. If the fault indicates wider system issues (for example, recurring leaks or sludge-related problems), you will be given clear next steps to prevent repeat call-outs. Any gas work is completed with the required safety checks.