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Pressure switch on Ferroli He 31/c Boiler?

I have replaced both the computer and the pressure switch on a Ferroli Optimax He 31/c Boiler but the fault readout still gives F37. -'faulty pressure sensor'

I believe the computer has to be set to accept pressure switch/sensor - but how?

David Walker
December 2012
FerroliHeating, Home Heating SystemsSwitch Boiler Fault

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