ecoTEC plus 824 problem. No hot water

[pdcleeds]

I have a problem with an EcoTec plus 824. When calling for the hot water it fires up and doesn't give hot water but heats the rads up. fault code suggested the diverter valve, looking the diverter valve is all crusted up so I changed this. But still getting the same thing cold water when calling for hot and rads warming when they shouldn't. Display shows the tap when calling but just not having it....

 

[Crinkmeister]

Is the valve getting the correct electrical input from the control board?

 

[arran197]

Can you hear/see the valve head moving in and out? The plate heat exchanger can cause a similar issue if it's badly blocked.

 

[merv]

Have you checked that both filling loop levers are closed under the boiler. The boiler is designed not to give you hot water if one of the valves is left open.