How to mend ... Flow Heating Water

How do I replace thermocouple on Johnson & starley J25-32 Mk3 modair flow?

This thermocouple is for the hot air central heating. The thermo for the hot water is OK. When I light the pil... [Read more]

johnson & starley model J25 - 32 Mk3 modair flow?

Hot water is ok but pilot light on c/heating goes out when I release the button.

Worcester 350 combi not heating domestic hot water?

I have a worcester 350 combi that works ok on the central heating side, but randomly fails to light when drawi... [Read more]

honeywell 4073A 3 position diverter.how do I fix this?

My Diverter valve is not changing from central heating to hotwater. there is a manual over ride,but nothing ... [Read more]

Why does my Potterton Lynx boiler not work? Please help a single mum!!?

Recently moved into new house and told water and heating working fine (although due to weather I haven't had t... [Read more]

Combi stops firing for hot water when cold tap turned on?

Hi I have a Worcester Bosch Thermotechnik combi - on the boiler casing is a Bosch-stamped cert saying it is... [Read more]

volkera compact 28 combi boiler?

hi the heating works but no hot water any ideas,is it the water flow sensor/diaphram???? many thanks

How can I fix a Potterton Prima F Boiler?

I have a Prima F Boiler. The problem I am having is when I call for either hot water or central heating the f... [Read more]

does anyone know hy my vokera linea 24 cycles on and off?

my boiler lights the goes out every 5 or 6 seconds on heating and hot water flow and return clear pump running... [Read more]

My Potterton Profile 60e LPG will not fire up?

When the heating or hot water triggers, the fan starts, the lighter clicks and the pilot lights up, but the ma... [Read more]

glowworm swift flow 80 (honeywell) combi boiler?

hiya my central heating wont work, i've tried bleeding the rads and all seem ok but i think there may be an a... [Read more]

Worcester Bosch 35CDi II - hot water fault?

After coming back from holiday we found that our boiler will only heat the hot water when the tap is turned fu... [Read more]

Ravenheat CSI primary not igniting, can you help?

I have a Ravenheat CSI primary condensing boiler, this is about five years old and has worked okay. We recent... [Read more]

optima 701 pressure rises when heatings on drops when off?

optima 701 was in when we moved in,we have had a few problems in the past with pressure releif valve needing c... [Read more]

Baxi 80E heating is on constantly even with timer switch in off position?

Central heating pump is constantly running. Boiler lights up intermittently, runs for few seconds, then flame ... [Read more]

How can I diagnose my Glow worm Fuelsaver F100 boiler problem?

My ageing, but until now perfectly reliable, Glow worm wall mounted central heating boiler appears to have dev... [Read more]

Failing hot water on a Saunier Duval F30E Themaclassic combi?

I have a 4 yr old Saunier F30E standard combi running on natural gas and the hot water is failing dismally. Ho... [Read more]

can I get my Glo warm swift flow 80 mended or what do I replace with ?

My boiler suffers from intermitent running espcialy when showering it seems to stop heating the water and wont... [Read more]

Water pressure on a Sime 100e combi-boiler?

... after replacing the diverter valve diaphragm, dhw heat exchanger and cleaning the inline filter I'm still ... [Read more]

Baxi Bahama 100 - Hot water problem?

Hi there to anyone who can possibly help me with the above problem. The boiler works fine for central heati... [Read more]