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Rangemaster 110?

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Mend Optimax 31c

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We have 96 questions about mending 'optimax 31c'

How to mend Optimax 31c

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Mend Heating, Home Heating Systems
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Ferolli Optimax HE 31C expansion vessel change?

How easy is it to change the expansion vessel on a Ferolli Optimax HE31C please? Looks straightforward but nev... [Read more]
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Parts for ferroli optimax he 31c ?

Hi, can I mend this boiler using parts from the plus model as I've been given one? Thanks, Mike
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How turn off heating in Ferolli Optimax 31c?

I dont know how turn off heating in my boiler. I Have remote controller with thermostate but i think is not co... [Read more]
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ferroli plus 31c has a code b2 any ideas?

code fault b2 on my ferroli optimax plus 31c
Mend ferroli boiler optimax he 31c
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Ferroli Boiler Optimax HE 31C?

Flashing F21 what does this mean and can I fix it without having to call an engineer?
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Installation instructions for Ferroli 30800009?

I have bought a Ferroli Radio Thermostat Clock (Part No. 30800009) to fit to my Ferroli Optimax HE Plus 31C. I... [Read more]
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Ferroli optimax HE 31C?

my fuse box tripped and it turned off my boiler and now the boiler is showing high on the gauge and flashing F... [Read more]
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How do i get the water pressure up please?

I have a Ferroli optimax he 31c boiler and need to get the water pressure up, how do i do it please?
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Fan is running constantly when boiler is not in use?

Ferroli Optimax HE 31C boiler. No fault code showing
Mend optimax ferroli flashing
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how can i fix my optimax HE 31c?

Got ferroli boiler optimax he 31c no heating or hot water but got a flashing F on front panel ! Any ideas ?
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How to stop a water leak on Ferroli optimax?

I have a ferroli optimax HE plus 31c boiler. It was serviced yesterday and today it has developed a leak from ... [Read more]
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How to repair leaks/remove pump on Ferroli Optimax HE 31C Super plus?

I had a fault code with my Ferroli Optimax HE 31C Super Plus showing it was a return sensor fault. I found tha... [Read more]
Mend Heating, Home Heating Systems
1

how can i fix?

i have a leak on the plastic cup threads on the ferroli optimax he 31c condensate/cup can i get these anywhere... [Read more]
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Optimax he 31 c LCD screen has stopped working?

Ferroli optimax he 31c LCD screen has stopped working, although I can hear the boiler making a noise every 5 s... [Read more]
Mend heating power home

how do i reprogram the pcb ?

optimax he plus 31c ferroli f40 fault after power cut
Mend boiler heating systems

how to fix ?

what does fh mean on optimax he 31c boiler is it easy to fix ?
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