thanks for all your help everyone, it was the jumpers that were not fitting tight on the pcb and one had dropped out too!
All fixed now - put a bit of sellotape on to hold them in!
Thanks again
Debi
i've looked at the pcb and it seems okay and fits okay, anyone any other suggestions please? Not that the heating is needed at the moment but ive no hot water now!
Debi
Hi, I have an Ideal Isar HE24, on the LED display is is flashing H then 5 or S. I've had a look in the manual and this code doesnt appear.
Anyone got any ideas please? :)