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Nav screen shows: Result:NG in red?

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Mend Ferroli Optima Boiler

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Mend heating radiators boiler
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How do I stop water from flowing outside from my ferroli optima 901 boiler?

Pressure bar is constantly at 3. If I drain radiators, pressure reduces but then creeps back up again. I have ... [Read more]
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pilot light will not stay on?

my ferroli optima 701 boiler pilot light will not stay on. I change the pilot thermocouple but that did not wo... [Read more]
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ferroli optima 901 c/heating problem?

heating will not come on but hot water ok. pump runs. boiler fires up when stone cold for c/h eventually but w... [Read more]
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ferrioli 901 optima boiler?

boiler when running keeps pressure spot on,when boiler shuts off the pressure slowly drops off and needs to re... [Read more]
Mend boiler heating ferroli
1

part not available?

i have had my Ferroli Optima 700 boiler serviced and they have broken the pipe, gas valve to burner, part numb... [Read more]
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Mend heating fault code ferroli

feroli optimax fault code a4 ?
Mend ferroli heating fault

ferroli plus 31c has a code b2 any ideas?
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boiler indicating f5 causing ?
Mend boiler heating Ferroli

FF360 Reset Button Problem?
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Installation instructions for Ferroli 30800009?
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Problems With Ferroli Domi Compact F30 B Heating and Water?
Mend combi radiators heating

i have a ferroli combi boiler i have 1/2 the radiators working and 1/2 not ?
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Parts for ferroli optimax he 31c ?
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F40 fault?
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Ferroli Optimax HE31c a26 problem?
Mend heating radiators boiler

How do I stop water from flowing outside from my ferroli optima 901 boiler?
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Ferolli Optimax HE 31C expansion vessel change?
Mend ferroli boiler optimax he 31c

Ferroli Boiler Optimax HE 31C?
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Heating coming on all times?
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Ferroli Optimax HE 31 C, how do I put water pressure up?
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Ferroli , Modena 102 Gas boiler?
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how to fix ferolli boiler?
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How can i repair a noCN fault on my boiler?
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Replace a diverter valve?
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How do i get the water pressure up please?
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I have a Ferroli FF 77 the pilot light has gone out will not stay on ?
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Over filled my Ferroli boiler?
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I have a Ferroli domicondens he 26 c heating not working?
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Ferroli DOMIcompact F 30 D?
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Connections on Ferroli F24 Gas Valve?
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Ferroli H31c no hot water or heating & no fault sign?
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Ferroli domicondens he26 C fires up but doesn't appear to rectify ?
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How can I get my ferroli boiler to work?
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Hi how to increase the water pressure on ferroli optimax 25C?
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How turn off heating in Ferolli Optimax 31c?

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