How to mend ... Heat Exchanger Fault

How can I fix my Chaffoteaux Britony boiler SE 80?

The hot water, whether the heating is on or off, fluctuates between hot and cold in a 30 odd second cycle. The... [Read more]

Micron 40ff heating up then cooling right down before starting up again. ?

Please help I have a Micron 40ff with radiators with TRV's & a room stat, I replaced the old style PCB about 3... [Read more]

Potterton Kingfisher MFL lockout?

boiler is locking out occasionally (once a day). Prior to lockout all radiators get VERY hot and there seems ... [Read more]

water pressure continually rises on a baxi 105e?

I have two faults on my Baxi 105 E The water pressure continually rises although the filler loop is disconnec... [Read more]

4 year old Valiant boiler keeps cutting in & out when heating water ?

My 4 year old Valiant boiler keeps cutting in and out when heating water for the taps and shower in the house,... [Read more]

High pressure on a Baxi 105E?

My boiler has a high pressure fault not caused by the filling loop. I have been told that it might be the DWH ... [Read more]

Saunier Duval Codens F30 heat exchanger?

My Saunier Duval Codens F30 is always depressurising and also, when it works for sometime, it shows a fault co... [Read more]

ravenheat 820 no hot water?

i have a ravenheart 820,have previously had to have heating on to obtain hot water,to avoid overheating and st... [Read more]

Worcester bosch 28si lockout?

My Worcester 28si keeps locking out shortly after firing. I have ruled out primary sensor, dhw sensor, fan ai... [Read more]

Glowworm 30ci leaking?

A couple of days ago, I noticed that the heating was off. I used the internal control to fire it up, but there... [Read more]

domestic hot water problem Baxi 105e instant?

In all respect my boiler appears to do everything it should.No fault warnings,sounds right,fires up on demand ... [Read more]

jaguar 28kw boiler help?

My Jaguar 28kw boiler shows F3, this is supposed to be a blocked heat exchanger, i have checked them all they ... [Read more]

Sabre 24 Combi boiler problem?

With the filling loop removed on my 18 month old SABRE 24 combi the pressure gauge on the heating circuit cont... [Read more]

Cannot fill Vaillant Turbo Max plus 824E ?

No pressure indicated on gauge and yet Radiators appear to be heating ok. Switching on Hot water Tap brings on... [Read more]

Cannot fill Vaillant Turbo Max plus 824E ?

No pressure indicated on gauge and yet Radiators appear to be heating ok. Switching on Hot water Tap brings on... [Read more]

Overheat cut out worcester 9.24 electronic boiler?

Had no central heating but hot water ok, boiler shuts down after 2 mins, found (eventualy) that the thermocoup... [Read more]

Potterton 80 EL Heat Exchangers Kettelling noise?

Is it common for the heat exchanger to cause the fault known as kettelling? Also is the only answer a new exch... [Read more]

Is the Heat Exchanger at Fault?

I have a Vokera Option Boiler A Engineer told me that the hot water circuit was leaking into the CH system ra... [Read more]

Glow Worm Space Saver 38 fault?

It's a really old one but was fine until this morning when I gave it a clean. Hoover in and got all the muck o... [Read more]

How do i stop my boiler being noisy?

I have Baxi solo 50RS boiler which I have had trouble with for some time. My heating system was new when the h... [Read more]