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optima 701?

have checked and prooved a.p.s,also venturi clear.do you agree its the pcb not sending signal back ti fan for full rate before ignition sequence?

chris
January 2011
OptimaHeating, Home Heating Systems
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how can i fix my ferolli optima 701?
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high pressure when heatings on?
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Big bang on ignition?
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Trianco Optima Boiler Programmer Fault (QA73)?
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OPTIMA 701 Ferrori heating problem?
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how do i depressurise a ferrolli optima boiler?
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how can i fix boiler?
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Why does the Hawk II Optima keep turning on central heating without request?
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Pilot light will not ignite?
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optima 701 pressure rises when heatings on drops when off?
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Optima failing to fire up?
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Why do my TRV's rattle?

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My boiler only fires up for about 90 seconds greenstar 4000
Mend Home Heating Systems
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Find out how to mend Optima home heating systems