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Mend Vokera Linea 28 Heating Diaphragm

my vokera linea 28 won't ignite?

pressure problem cured by having the pressure diaphragm replaced.it ran ok for a day but now it won't ignite and flashes the "01"code.help...

john murray
December 2007
code 04 is for insufficient pressure, go through the ignition sequence to identify what is failing, pump running, micro switch making, fan running, venturi operating air pressure switch, ignition pcb, gas valve, flame recognition?

Big A
December 2007

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