Valor Non Pumped Base Unit PCB 93594756

This is a non-pumped base unit PCB, identified by the manufacturer as NP Digimix and supplied under part number 93594756. It is a Valor control board used in the boiler appliance range, handling the sequencing and safety logic for a non-pumped base unit configuration. The board is the interface between the appliance's controls and its ignition and monitoring circuits.

• The boiler fails to respond to a call for heat, with no ignition sequence starting.
• Repeated lockouts or fault codes that clear only temporarily after a reset.
• No communication between the controls and the appliance, so no pump or fan activity is initiated.
• Visible damage on the board, such as scorching, burnt tracks or swollen capacitors.
• Erratic or intermittent operation that cannot be traced to another component.

• Confirm the appliance model against the manufacturer's parts list for this part number.
• Check the existing board's part number and variant marking to confirm it is the non-pumped base unit version.
• Verify the fault lies with the PCB rather than the wiring, sensors or thermostat before replacing the board.
• Note that PCB replacement may require the appliance to be re-commissioned and safety-checked by a competent engineer.