Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

Case Removal
Loosen the bottom 2 screws and undo
the 2 screws at the top of the boiler and
slide case off forwards
Facia Panel
Ensure electricity supply to appliance is switched off.
Remove the screw and lower the panel downwards.
Take care not to damage the pressure gauge capillary tube or electrical connections.
Notes:
1. The appliance has a pre-heat mode to reduce the time taken to produce hot water. This diagnostic model requires the appliance to be set to ECO mode, (ECO button illuminated,) which turns off the pre-heat function.
2. There are different versions of this appliance, ensure you choose the correct version.
3. CARE! - The inner case of this appliance may have sharp edges.