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Sabre 29 water pressure drop?

sabre 29 water pressure dropped, how to increase the pressure

Mend boiler greenstar flashing

Worcester Greenstar CDi boiler won't fire up the central-h?

flashing green light near the CH select button new batteries in transmitter

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How do i stop the time from flashing on the Siemens RDJ100RF?

How do i stop the time from flashing on the Siemens RDJ100RF unit

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Mend 31

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We have 110 questions about mending '31' in category Heating, Home Heating Systems

How to mend 31

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Mend boiler ferroli optimax

my ferolli optimax hc 31 c boiler flashing a1?

my boiler is flashing a1 on screen pressure was high on 2 drained the valve to lower pressure now gone to 0 tu... [Read more]

Mend boiler fault code central heating

Ferroli HE 31 C Problem?

I have new boiler (less than 2 months old) that was working fine, but now DHW won't work. Fault d1 comes up on... [Read more]

Mend boiler heating water pressure

My ferolli optimax boiler H E 31 suddenly stopped working?

my water pressure continually drops so i turn it back up and it works again, but this time it won't come back ... [Read more]

Mend boiler central heating reset

how do i restore heating from ferroli optimax he 31 c?

the boiler is on as i have hot water but the central heating will not come on. the code is not recognised in t... [Read more]

Mend boiler heating ferroli

Name of part for Ferroli Optimax HE 31 C boiler?

Hi, I have the above boiler which requires a new part. In the user manual under section 2.7 'Condensate Outle... [Read more]

Mend boiler central heating programming

optmax he 31 c?

timimg for central heating i have set it for the mon to frid and sat and sun but some how also have set it for... [Read more]

Mend heating temperature control

Unica HE boiler - hot water temp?

the hot water flow through the boiler is only warm to hot. The green led shows 31 - 36 when the bath is run et... [Read more]

Mend boiler fault code water pressure

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]

Mend Ferroli Combi Fault

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]

Mend boiler heating pressure

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]

Mend boiler heating ferroli

Ferroli Optimax HE 31 c boiler serial number?

Where can i find the serial number to my Ferroli Optimax HE 31C boiler? Thanks.

Mend boiler heating temperature

Ferroli Optimax he 31 s - water temp?

the digital tempreture on the boiler won't let me go above 65 fo water temp. Is this right?

Mend ferroli heating fault

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

Mend boiler heating error

Help fix Optimax HE 31 C Boiler. F37 Error?

Optimax HE 31 C Boiler. F37 Error. There are 2 blue valves and 2 black. Which ones should I open and which pos... [Read more]

Mend ferroli gas pressure

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]

Mend boiler heating ferroli

ferroli optimax he 31 c?

hello, silly question - how on earth do i fill my boiler to increase pressure? i have tried turning the blu... [Read more]

Mend boiler central heating fault

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]

Mend heating hot water glow-worm

New Optimax HE 31 C ,turn hot tap on ,no hot water?

ew Optimax HE 31 C ,turn hot tap on ,no hot water.I have,nt tried c/h yet,just hot water.

Mend boiler heating ferroli

ferroli optimax he 31 C?

What does code d2 on the display mean?

Mend boiler ferroli low water pressure

No display on Ferroli Optimax HE 31 C control panel why?

Please help. The control panel has some lines on it (power is on) but no symbols at all - no fault codes, no p... [Read more]

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Mend Heating, Home Heating Systems

Remove cover off gas boiler?

Mend Heating, Home Heating Systems

How do i stop the time from flashing on the Siemens RDJ100RF?

Mend Worcester Combi Ignition

Worcester 30 Cadillac combi boiler won’t fire up and the EA?

Mend boiler heating systems

Remove boiler cover?

Mend heating radiators boiler

Worcester boiler dripping water?

Mend Heating, Home Heating Systems

How to fix my fireplace?

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Vaillant ecotec 831 plus?

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Oil fired boiler thermostat?

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Greenstar 24Ri boiler, fast flashing - can I reset?

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