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We have 157 questions about mending 'ferroli optimax he' in category Heating, Home Heating Systems which have been answered

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F40 on ferroli optimax he 31 boiler?

I'm in a rented property with prepaid gas meter. My gas supply ran out and I found a error code A01 in my Ferr... [Read more]
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Boiler Systems?

How do I improve a low water pressure fault on a Ferroli Optimax HE 31 C Combi Boiler System? The pressure... [Read more]
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Ferroli optimax boiler Radio thermostat clock?

How do you programme the clock it does not come with instuctions
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Ferroli Optimax HE 31 C, how do I put water pressure up?

Boiler is 4 weeks old and the water pressure is too low and I now have no heating. Does anyone have any idea ... [Read more]
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Ferroli Optimax HE 31 c boiler serial number?

Where can i find the serial number to my Ferroli Optimax HE 31C boiler? Thanks.
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on a optimax ferroli 31 he c what is a F21 fault, ?

on an ferroli optimax he 31 c, what is a F21 fault please
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Ferroli optimax anyone knows what fault D01means?

And D02. Heat picture is showing over radiator but the burner is not coming on and the boiler is very new.
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How to fix fault affecting Ferroli Optimax HE 31 gas boiler?

The F fault indicator signifying low pressure and failure on my Ferroli gas boiler Optimax HE 31C hasnow been ... [Read more]
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ferroli optimax he plus 31C time clock?

does anyone know how to set the time clock so that pre-programmed heating and water etc comes on when you have... [Read more]
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Any Solution?

Ferroli Optimax HE Plus 31C - fitter installed yesterday but getting the following code display - d2 followed ... [Read more]
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Problems with Ferroli optimax 25c?

Not long after service. Not flashing fault just two dashes. No heat no hot water. And gushing sound coming fro... [Read more]
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ferroli optimax 25c. empty boiler?

re.ferroli 25c. no hot water. no.heating. gauge shows zero. have to refill every morning. fault code f37. can... [Read more]
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Leaking boiler?

I have a 3 year old Ferroli Optimax boiler that leaks not from the pipes but from inside the boiler itself and... [Read more]
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where can I get hold of Ferroli Optimax HE 31c userbook?

Need instructions on how to set the clock for the central heating on a Ferroli Optimax HE 31C. Where can I get... [Read more]
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Ferroli Optimax HE 38C No CH and HW switching on/off?

The boiler will sit waiting for HW demand, will supply HW mostly but sometimes display just goes off (so does ... [Read more]
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Ferroli Optimax Valve?

Just moved in should system valve be open or shut
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ferroli boiler comes on when cold tap is turned?

is it normal for the boiler to come on but only for a few seconds when the cold tap is turned on . on a ferrol... [Read more]
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FERROLI OPTIMAX HE 31C LPG?

I HAVE INSTALLED A NEW OPTIMAX HE 31C, THE BOILER WILL NOT FIRE ON START UP, AFTER TALKING TO FERROLI IT WAS ... [Read more]
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ferroli optimax he 31 c?

I have no instruction booklet for the above. It is 6 months old. The central heating wont turn off (even with ... [Read more]
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whats the fault d2 on a ferroli boiler?

whats the fault for d2 on a ferroli optimax He 31c boiler we have no hot water but rads work
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