worcestor 28i rsf hot water fault

[boilerdoktor]

picasso has helpfully given you the means to check the flow switch!

if its ok then it will more than likely be the pcb! check though that youve piped it back up right!

easy mistake to make!

shut off cold inlet iso valve at boiler, undo nut above it or the dhw one do you get water at mains pressure!

 

[picasso]

My first thought was it was piped up back to front (hot and cold reversed) but the op was sure he had it right

 

[monoxide62]

the hot water Thermistor reads 3.4 k when cold and 1.3k at 60 degrees which seems out of sync to me.

You sure that figure was 3.4k & not 34k.

 

[remusbooty]

Almost gauranteed when you moved that boiler some water has corrupted an electrical component on the boiler.