Gas boiler questions
As well as the gas boiler FAQs below, our ‘Quick gas boiler help’ page offers specific information for your gas boiler.
Frequently asked questions
- Common winter boiler enquiries
- What does the 'SE', 'D5' code or slow flashing blue light mean on my Greenstar CDi?
- What does this symbol mean: "-//-" ?
- What do the two flashing circles in the display mean?
- Where can I position my gas boiler flue terminal?
- Does the Greenstar Plume Diverter kit fit onto the non-telescopic condensing flue?
- How can I locate crossed pipework on my newly installed Greenstar boiler?
- Does an external condensate pipe have to be insulated?
- How can I buy a new Worcester boiler?
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