promax

Hi all, I have a Promax 15 HE ( the older one without the 3 led's). Replaced the ignition PCB as it was burnt out. The boiler is firing up for 10 minutes when demanded, then burner extinguishes and nothing else happens. Thermostat is factory set and non adjustable. I have flow round the...

Dear all. I have a promax 15he which I replaced the ignition PCB. Now lights fine but seems to cut out on the stat after 10 minutes and does not relight. Pump is running, SL is live, Pump has L feed and rads are starting to warm upstairs and down. When burner extinguishes there is still a pump...

Hi guys, having a problem with a potterton promax SL making a humming /vibrating noises. Gas ratio & inlet pressure it's fine. Has anyone come across this issue before. Cheers in advance.

Hi Guys, my boiler has started to switch itself off after a few minutes so I took the fron cover off to check the diagnostics lights. Its flashing like this : FLASH - OFF -ON. Having read the manual it shows a overheating lockout - The manual shows 3 possible faults. 1 - The PCB 2 - Red...

Hi Guys, my boiler has started to switch itself off after a few minutes so I took the fron cover off to check the diagnostics lights. Its flashing like this : FLASH - OFF -ON. Having read the manual it shows a overheating lockout - The manual shows 3 possible faults. 1 - The PCB 2 - Red...

fitted a new radiator for a customer 2 wks ago for a builder who was doing an extension to a house.got call this morning saying customer had to have BG out as there was a smell of fumes in the room and they all felt ill. I arrived to be told BG have id boiler and on report it said poss leak of...

Boiler on for heating working fine, if they switch it off by roomstat or clock, every now an again they run hot water to find it cold. Boiler error code e119 comes up, pressure guage saying o. its intermittent this. Always fine when ive been out ? went out before, pressurised the exp...

Ive had a fault with the above boiler and the baxi version about 6 months ago nothing made me suspect the boiler until today. what happens is it runs for maybe 2 hours and then goes dead it looks like theres no demand on the switch live when it does. so previous engineers have changed three port...

Evening all , I've got a customer with an intermittent rattling/vibration noise on her Potterton Promax HE STORE . I've been out to it three times in the last few weeks and have yet to hear it on my visits ! I've done all the gas,combustion and flue checks and all is ok. The problem seems to be...

Hello, My boiler has started to lose pressure. I placed a bag over the pressure release valve drain and then pressurised system to 2 bar with the heating off. It remained steady and didn't lose pressure. I then switched the heating on and watched the pressure. It gradually increased to 3 bar...

Went to look at a Promax 15/2 heat only today that makes quite a loud low pitched vibrating noise on start up. It makes the noise nearly every time the boiler tries to fire up and usually takes 4 or five attempts to light. Ocassionaly it won't make the noise and lights first go. I'm thinking...

hi all above boiler keeps blowing the f2 fuse on the main board the pump runs fine and the fan has 12v going to it so would this mean the transformer is ok ? also i have removed the van and the bearing seem fine any help would be good thank you as you can tell im crap with break downs but...

I've been to a breakdown on this boiler locking out on ignition fault spoke to the technical people they've gave me a part number for new combustion door with a thicker seal and improved spark electrode and rectification has anyone fitted the redesigned part?

the landlord i do some work for has had 2 of these in his properties both fitted within the last 2 months - while there today on a different issue i noticed when the boiler fires the case shakes and a small bang like a slight explosive ignition .the one in the other property was similar on firing.

potterton performa fan fault light flashing Hi Lads , Just been to a callout, fan light flashing on a pot performa . Tried reset no joy, pump running, fan running but no spark ? Took the front off and had a bit play with the pipes on the fan body sucking and blowing aps clicking then put...

Yes i am gsr, just trying to build up my 10 posts (then i will happily post in GSR section), tried baxi tech desk but gave up after 1 hr, anyone know what resistence should be on gas valve solenoids, also just to confirm which pins to test accross. I've replaced gas valve but want to check this...

Hi I installed a Potterton Promax FSB 30 boiler into a customers house 7 months ago. The customer called me to say that the boiler is making a humming sound that then vibrates the pipes. I bobbed in to the property to have a look and upon firing up after 5 mins there is what I can only describe...

Hi Guys, I'm looking for a bit of advice/confirmation of what i think the fault is. got called to a promax 18 sl last week thats not firing up and going straight to dry fire.. the engineer before me diagnosed a PCB and i was just sent to fit it, alas this achieved nothing (not sure how he came...

Having a nightmare with one of these and the only one I've ever come across. Basically the fan keeps over heating so it's pretty much too hot too touch, spoke to technical and on their say so we've fitted a new door with seals, fan seal, burner and HT leads. Still the same fault after 30...

problem only occurs on central heating, replaced spark probes already as slightly bent, correct voltage from board to spark generator 190v Dc, signal from flame proving probe fine. heating fires up initialy but once at temperature does not cut back in, will do if you run dhw flame then stays...