Sorted it woo hoo
it was a problem with the driver pcb.
To help others
boiler is a halstead quattro
problem was ignition lockout tripping
first found that auto bleed valve wasn't working. replaced valve still faulty
replaced the two thermistors
the fault finding chart on...
I have now replaced the automatic bleed valve and the two thermistors (hot water and heating thermistors). Both heating and hot water are still getting too hot and then ignition lockout operating.
Any feedback would be appreciated me and my family are now fed up of been cold and dirty.
Hi
We are having exactly the same problem, started on just the hot water now seems to be doing it all the time on hw and heating. it seems that the water is getting too hot, the rads become very hot even with temp turned right down same with hot water. any ideas what i could try ( i am an...