Recent content by LanceB

green light comes on initially then after 20 seconds or so (once the heat builds up I guess) its fades out leaving just the amber light and then the flame switches off. After 10 seconds or so it starts again. Removing the thermistor lead doesnt sound like an ideal/safe option as I guess the the...

Hi yes I know this is an old combi boiler. I've had it for 22 years and it was in the house at least 5 years before we move in I believe. Boiler fire up fine. CH is fine. DHW activates diaphragm->servo->diverter valve, boiler starts and the heat exchanger gets hot. Water from tap gets hotish...

final update replaced board and all is now well. I have learnt a few more things about my nemesis the boiler! I look forward to our next run in. Probably just as the weather turns cold. Many thanks to all that have responded. Your advise and the fault tracking sheet for the boiler saved me...

My bad jts a 130273 however non issue as ive just picked up a 331 and it is exactly the same part even has 130273 printed on it! Ill fit this afternoon

Hi again swapped boards etc over and it does appear to be the main pcb. the boards in both boilers are 130272 but previously advised to get 130331. Looking up 272 on website it suggests it is for another model boiler. will a 331work ok? They look very similar and i can get hold of one today thanks

Over the next few days I will check the microswitchs as suggested and also look to swap the boards over. Fortunately the weather has improved a bit so the CH is not required quite so much at the moment. I'll let you know the outcome. thanks for the advise to date

Got 240v at T4. The pump jumper was already set to 1 if im reading it correctly. the boiler is the combi version. I have 2 boilers (dont ask) both the same series but one is a combi and the other the normal version. The pump is functioning fine when hw is drawn. Is all this indicative of...

Hi Agile what are the NO and NC? Thanks

Both microswitches appear to be working. i also replaced the whole assembly last year. there is a black switch next to the main power one which has a picture of a rad on it. that is in the on position. my guess was motherboard as i couldnt see any thing mechnically wrong (and most mech bits have...

Hw is fine. pump is fine. fan is fine. diverter is doing what it should. I think either control unit is faulty or another signal is telling it not to start. all the external signals appear ok ie room stat and timer.

Me and this boiler have a love/hate affair lol I have repaired it a number of times over the years and experienced most of the mechanical issues with the diverter, the servo, the fan and the heat exchanger. I am therefore familar with how most of these parts work. Usually when there has been...

Hi, I have a Vaillant Thermocompact VC GB 242 EH which is not giving me heating. It must be at least 18 years old but has been in generally good working order. The symptoms started as the pump going on and off. The boiler would start fine but then I noticed the pump cutting out and coming...

Hi I have an old conventional vaillant boiler vu-242eh that until recently has worked fine. Now, when it is cold it fires up with no issues whenever the heating or hot water is switched on. However after a minute or two it goes out, almost as if the water in the system is up to temperature...

it is a thermocompact.

Hi I have a rather old vaillant boiler. Not sure of the model number but its like a VC GB 242 eh only not a combi, a 'normal' boiler. When it tries to start the fan comes on and the ignition fires. Flames start but them immediatley go out and the ignition fires again. This all happens in a...