How to mend ... High Boiler Boiler

Buderus G115WS3 w/RIELLO F40-3 ... can't lower CO2?

I just installed a G115WS3 with a Riello F40 burner. When I first commissioned the boiler the Riello would not... [Read more]

Very High Pressure (on a Saunier Duval SD 620)?

I am getting very high pressure readings on the above combi boiler. the pressure or water when cold is 1bar an... [Read more]

Worcester Bosch greenstar boiler?

My condensation pipe was frozen and I've now fixed the problem by unfreezing it but before I did that I'd alre... [Read more]

worcester boiler no ignition and flashing light?

we have had a hairdryer on inside pipes and boiling water on outside pipes but still not working should we be ... [Read more]

High Pressure on a Saunier Duval SD 620?

the boiler is filled to the required 1Bar when cold and recently has been exceeding the 2 Bar pressure when th... [Read more]

Potterton Promax 15HE Boiler -relay clicking problem?

Hi, Need some help please. A 6yr old Potterton Promax 15HE on an unvented boiler installation has suddenly st... [Read more]

Reset button flashing?

my GREENSTAR 24Ri system is not working? the pilot light isnt going on and it is making bubbling noises, I ha... [Read more]

Worcester Heatslave 15/19 - water runs cold every now and again?

I have a 10 year old oil fired heatslave. The heating is good and usually the water is too but now and again i... [Read more]

worcesterbosch 240 pressure too high?

help.. i have a worcesterbosch 240 boiler, i reacently filled it up as i was advised, because the pressure was... [Read more]

boiler pressure too high, semia condens F24 E G.C. 47-920-51?

how do i lower the pressure (3 bar) of my saunier duval semia condens F24 E G.C. 47-920-51?

When Cold My Baxi Megaflow Shows wrong Temperature Celsius?

Hi When my Baxi Megaflow is off and stone cold, the temp on the digital display is wrong by nearly 15 degree... [Read more]

High Pressure?

Hi, I have a Alpha 240E combimax boiler. The boiler pressure remains very high (around 4) despite draining w... [Read more]

How to pressurise expansion vessel?

Vaillant Combi boiler VCW 282 central heating expansion vessel needs to be re pressurised as it is causing hig... [Read more]

how to flush my boiler?

my boiler is humming when heating either hot water or the central heating on high, I think it needs flushing, ... [Read more]

heatline condensing boiler?

When the heating is on , the water pressure rises from 1.2 bar to 3.0 , the window flashes blue with code FO 3... [Read more]

How can i fix my 38cxi ultracom?

Has any one had problems with their cxi ultracom hot water not staying hot when trying to run bath or shower h... [Read more]

my halstead ace high boiler does'nt let regulate the heating water ?

a couple of wks ago when i turned the heating on the pressure would start on 1 bar as normal and to 2.5 bar wh... [Read more]

ravenheat csi 85 condensing boiler ,water heating time?

The efficiency rating of my boiler is said to be quiet high. With this in mind why do i have to waste a... [Read more]

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]

poiler prussre is too high?

I have a Vaillant eco Plus 837 boiler, the problem I'm having is that the pressure reach 3.4 bar, I tried t... [Read more]