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Plumberpro, Plumber
Category: Plumbing
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Experience:  Heating and plumbing answers. 20 years experience
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After fitting new new control pcb on front of boiler reset

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After fitting new new control pcb on front of boiler reset boiler with all the parameters but boiler seems to be stuck in AF anti frost mode. The boiler is a biasi advance plus 35c
Hi , you may have a dud board . this has happened to me before.
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