How to mend ... Trying Ch Boiler

while running hot water boiler runs hot & cold for the duration tap is on?

tested gas supply 21 mb flow rate 12 ltr removed heat exchanger dhw clear changed both ch &dhw sensors checked... [Read more]

how to fix dropping pressure on grant euroflame oil ch boiler ?

We have oil central heating and recently boiler pressure keeps dropping to 0, have bled radiators but unsure w... [Read more]

my biasi boiler is working on dhw, but on ch it is working very slowly?

my biasi boiler is working on dhw, but on ch it is working very slowly, the returns are cold, the ch system se... [Read more]

Vizo boiler fault. Burner cuts out?

A few days ago my 3 yr old combi started playing up. The burner was cutting out while the stat was still deman... [Read more]

Can anybody tell me what is wrong with my alpha ocean 240e boiler, please?

Hello! My alpha ocean 240e boiler has trouble starting in CH mode. There is not problem whatsoever whit ho... [Read more]

No hot water on Worcester 28CDi?

I have a Worcester 28CDi combi. The CH works fine but the DHW has a problem. When i open a hot tap the red lig... [Read more]

Potterton Profile 80E Boiler?

The system is fitted with a Honeywell ST6400 programmer.The boiler and the programmer are no longer communicat... [Read more]

Glowworm Compact 100e?

Went to a Glowworm Compact 100e the other day and found out it was a lose electrical connection. Problem solve... [Read more]

whats wrong with my little star fanned combination boiler?

HW working fine CH working but when heating on it fires up for 1 minute then cuts off and then comes back on a... [Read more]

no heating?

i have a domestic gravity fed pumped system with two mot. valves. the HW system works fine when controller dem... [Read more]

My Potterton EP2002 controller lights are on but not firing hw or ch?

My Potterton EP2002 controller lights are on but not firing hot water boiler or central heating. I only had it... [Read more]

No HW or CH suddenly from my Vaillant T3WF H Combi Boiler?

This morning my boiler suddenly stopped supplying both Hot Water and Central Heating for no apparent reason. E... [Read more]

Potterton Puma 80 no CH?

the radiator next to the boiler will work, but there is no heating in the rest of the house. hot water is ok. ... [Read more]

Baxi Bermuda 552 Fire and CH?

My fathers baxi 552 is making a rattling noise and it seems to be coming from underneath the fire. It only ha... [Read more]

Potterton puma 80e no central heating hot water ok?

The central heating has stopped working without warning. The hot water works fine and the modulator light goe... [Read more]

Why does my Potterton CH boiler use water?

I can fill my boiler to 1.5 bar and the following day the gauge reads zero. The central heating still works an... [Read more]

potterton puma 80e, hot water ok, CH lukewarm?

I have hot water, The flame kicks in when I run the hot water tap and when the boiler decides it wants to kick... [Read more]

I have a chaffateux 80 boiler cuts out on CH mode?

I have a chaffateux 80 boiler, the dhw works ok but when CH goes out after a few minutes. It goes back on when... [Read more]

Glowworm Ultimate 40FF?

DHW working fine and all neons come on in correct sequence. For CH, Neons 1&2 keep flashing, fan runs for abo... [Read more]

How can I fix my Worcester 24i RSF boiler?

Whenever my CH/HW turns on the burner seems to light and then dies down after a second or so. This cycle seems... [Read more]