Not got keyless entry but when I get out of car after journey the key fob doesnt lock the doors for a couple of minutes. After that it operates fine but its annoying especially in rain
f75 fault is displayed as when pump gets power pcb expects water pressure to change (like a pump proving device). do basics like make sure pump running correctly water clean exp vessel charged correctly pipe to expansion vessel not blocked. have you put the modified part on which involves...
Depends on system type etc which way pump should be pumping ie gravity fully pumped etc need more info but it may be just air-locked is the system full of water at rads and circs at cylinder etc
What system have you got? on an s plan 3 is dhw on 4 is c/htg on terminal 1 is a hot water off terminal which is only used on y plan so shouldn't be linked to live
you old system was called an smc controller system with a smc controller clock which uses a relay to power boiler. As you have now converted to a y-plan you will need to alter wiring centre & change programmer
boiler probably ok only running for a short time because pump not cooling it down have you checked the 3 amp fuse in fused spur (pump may have blown fuse & subsequently tripped rcd)
Will need more infi ie fully pumped or gravity what controls you have if any etc.You may be better off changing blr as efficiency will be very low (well under 65%)