Nilfisk neptune 4

[Harvester]

Our pressure washer works fine on cold
If we use heat it will run hot until it reaches the correct temperature but when the burner cuts out the water stops a few seconds later .the red spanner light flashes and you have too switch off then on again and it runs until thermo cuts it all out
Any help appreciated

 

[RmfJ]

You have a valve sticking, if you are standing behind it looking forward with the cover open it is on the right of the boiler take it apart to sort it, mechanic looked at ours a couple of weeks ago.

 

[Harvester]

OK I will have a look thanks

 

[RmfJ]

It’s the valve on the pump connected to the pipe that goes to the boiler.