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We have 254 questions about mending 'ferroli optimax he'

How to mend ... Ferroli Optimax He

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Mend Heating, Home Heating Systems

Ferroli optimax 31 c faulty thermostat?

Digital thermostat batteries went dead, put new ones in, now it won't show any display except occasional rando... [Read more]
Mend Heating, Home Heating Systems

how can i setup my ferroli boiler?

my son who is in hospital has a ferroli HE 31 C Optimax boiler at his home, when I tried to run the heating I... [Read more]
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ferroli optimax 25c combi boiler?

does anyone know what breakdown code LU means it flashes for a while then two dots flash constantly and you ca... [Read more]
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ferroli boiler how to reset?

I have moved to a new house with a ferroli optimax 31c boiler but have no user instructions and can't get it ... [Read more]
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ferroli optimax 38c boiler?

I have a ferrroli optimax 38c central heating boiler just a few weeks old.In fitting new washers to my taps i ... [Read more]
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ferroli he31c?

how to fix fault f35 on ferroli optimax he31c
Mend Heating, Home Heating Systems

ferroli optimax 25c?

does anybody have codes or how to recode ferroli optimax25c combi boiler
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how can i fix frozen pipes?

my ferroli boiler keeps flashing f01 it is an optimax 25 OV and there is water in the boiler are the pipes fro... [Read more]
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help with a code ?

my ferroli optimax he 31c is coming up with a fault code reading 'A6' but when i look in the guide its not sho... [Read more]
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Ferroli Optimax 31c?

I have spilt water on the room thermostat, and the heating is off. Is there any way I can set it on the boiler... [Read more]
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Incorrect system water pressure?

We have just had a new Ferroli optimax he plus 31 c fitted. the error code F37 has come up which I believe mea... [Read more]
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ferroli optimax 31?

boiler shows A1 manual says purge air from system by opening gas cock, which i cant find. shows where it is i... [Read more]
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Ferroli Optimax 31c will not re-pressurise PLEASE HELP!?

My boiler is flashing F37 which requires that we re-pressurise the system, hwoever we have tried the way that ... [Read more]
Mend Heating, Home Heating Systems

Ferroli optimax he 38 c filling kit connections?

I topped up the water on my boiler, but think I have moved one or more of the other 3 "taps" that make up the ... [Read more]
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ferroli optimax he 31c trip-out?

my boiler cuts out and code 41 is displayed, other than this it works fine most of the time.
Mend Heating, Home Heating Systems

How to remove Ferroli optimax HE31C casing?

Undone two screws but cant lift casing. says in manual to fold down flap B but cant see anything. going to get... [Read more]
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how do i set my timer?

how can i set my timer on a ferroli optimax he 31c?
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Ferroli Optimax He 31C Combi fault?

Hi, I have a Ferroli Optimax He 31C Combi gas boiler. In the morning it regularly locks out on a F03 code eve... [Read more]
Mend Heating, Home Heating Systems

how do i fix my broken boiler?

I have a Ferroli optimax 25 c boiler, it has stopped working and showing fault code F37. The manual say thi... [Read more]
Mend Heating, Home Heating Systems

central heating timer clock memory?

ferroli optimax he 31C central heating timer clock does not keep time programed in. For more than 48 hours ... [Read more]
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