Hi, I have a potterton combi 100 boiler.
I have checked the pressure and it was set at 1.5 when cold (boiler not running) but this shot up to about 3.5 (into the red on dial) after about 1/2 hour of running central heating.
There is an intermittent whistling noise coming from the boiler...
Replaced the PCB as some of the connections ( top left, think its the power supply ones) scorched and burnt out the connections on the back of the PCB.
this was repaired a couple of times with solder but eventualy they gave up and the boiler had no power.
seems to be working fine now apart...
Hi, i read on another posting that after you have fitted a new PCB the you should adjust the range rate.
Can someone tell me how to do this and what it does.
Also i explosive ignition which now seems worse since new PCB board was swapped over. Will altering the range rate help with this...
Hi, In need of a puma PCB21/18601. Been repairing mine for quite a while now but the time has come to replace it. Anyone have a spare :D
07717170859
thanks
Hi, after months of trouble with my potterton combi 100 boiler. My PCB board is now sparking like crazy. Does anyone have one these available for sale. Im a bit skint so cheaper the better :lol:
thanks
allison
Hi, Seem to have the CH working now but only when it is switched over to timer - not on constant.
I followed the wires from the CH switch to "PL2" on the main circuit board, then i disconnected and then re-connected the connection - after that hey presto i had CH back even if it only worked...
Hi, thanks for the replys. I have looked through lots of posts that are similar to my problem but couldnt make anything from them.
If you think it sounds like it could be a problem with the main circuit board i could get a metre and check the voltage between the two points if some one could...
Hi all,
When i run the HW tap there is a red light that comes on inside and the boiler fires up and i have hot water so i presume all pumps etc are working fine.
However... When i push the swith to turn on the CH, whether on constant or timer i get absolutly nothing...no red light...
Hi all, this is my first post so i really hope i get some help.
I have a 2 gang light switch and one of the switches is wired up to the ceiling light it is a 2 way light and has L1 L2 and com.
I was wanting to add an extra light by taking a live and neutral form the ceiling rose and wiring...