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Its started playing up again. A 3 year old boiler and i replaced the PCB last year. Now when the DHW is requested it sends the heat to the rads. I have changed the diaphrams in the diverter valve and this doesnt seem to have made any difference. When the tap is turned on both microswitches...

Hello everyone This time i bought a flat and its got one of the above fitted. When HW is run you get warm water only everything ignites and runs for about 10 seconds smooth then it looks like the gas is pulsing. When CH is turned on it runs smooth for a few minutes then gas pulses. On...

Hello everyone me again. This time a combi as mentioned in the title. The fault is when heating is turned on it runs for 10 minutes and then turns off the house hasnt warmed up yet pressure rises to 1.8 bar. After looking at a few things i checked the expansion vessel it had very little...

Hello a friend of mine is getting married on Saturday and the combi has started losing pressure on a daily basis and has been constantly topping up. The overflow seems to drip when the central heating is on. The expansion vessel has no air in it so i put 10psi in it, that has not solved...

hello i'm new to this, hopefully i will have explained myself well. i have a potty performa 28 installed 3 years ago. yesterday it decided to stop working and the fan warning light is flashing. i have followed the fault diagnosis in the manual and looked at flow diagram D. The pump runs...