Some of the checks include;

-Checking installation is installed to manufactures instructions.

-Boiler operation.

-Flue integrity and installation.

-Case seals and burner seals.

-Full strip down and clean out heatexchanger.

-Replace Burner seals.

-Replace Electrodes.

-Condition of boiler parts within casing.

-Replace Schrader valve and re preasurise expansion vessel.

-Preasurise central heating to correct pressure.

-Clean out central heating filters.

-Clean out condensate.

-Combustion check.

-Gas Rate and Gas pressure.

-Ventilation.

-Safety devices are working correctly.

-PROVIDE FULL REPORT