Harvey water softener does not start at all; display is blank and unit appears dead

Safety: Do not open electrical components while they are connected to mains. If unsure, consult an electrician.

• Check power source: Verify the wall socket or fused spur is switched on and supplying power by testing with another appliance.
• Inspect adapter: Ensure the Harvey power adapter is firmly plugged into both the socket and the softener. Look for damage to the cable or plug.
• Replace adapter: If the adapter is suspect, replace it with an identical Harvey-approved unit.
• Board inspection: If there is still no display with a known-good adapter, the control board may have failed and will need replacement.

Control board replacement involves working near mains-voltage components and should be carried out by a qualified technician.