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Mend Vokera XL 80 SP Boiler Heating Thermister

my vokera xl 80 sp?

the hot water keeps going hot and cold, already changed the thermister

ralph
August 2007
Hot water not getting very hot central heating ok

Brian
March 2015
google 'vokera flue venturi cycling'
Differential air pressure switch cutting out, cause: dirty venturi, fan and HE. Cure: proper Vokera service.

c
August 2007

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