How do I put the Logic in Service Mode? 

Important Information!
This content is for the purpose of gas safety registered heating engineers only.
Gas and electrical safety work must follow all safe working practices and regulations. The content is condensed and does not intend to show the full processes that may be required. Ideal Boilers Ltd can not accept legal responsibility for any accidents or injuries caused by non-gas safety registered persons using the guide.
It is against the law to perform work on a gas boiler if you are not a registered engineer.

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