Vaillant 130822 Printed circuit with display (grey)

The Vaillant 130822 is a printed circuit board supplied with an integrated display, finished in grey. It is a control board for a Vaillant appliance, carrying the processing and display circuitry that governs operating sequences and reports status to the user. The board sits within the appliance casing and connects to the wiring harness, sensors and user controls.

• The display is blank, dim, or shows garbled or partial characters while the appliance still has power.
• The appliance fails to respond to control inputs, or locks into a fixed state that cannot be reset.
• Repeated fault codes appear that trace back to the control board rather than to sensors or the wiring harness.
• The appliance runs intermittently, cutting out and restarting without a consistent pattern.
• Visible damage on the board, such as scorching, discoloured tracks, bulging components, or corrosion around the connections.

• Read the part number from the existing board and match it to 130822, as Vaillant uses several board variants across its ranges.
• Note the display colour of the board being replaced and confirm it matches the grey display on this part.
• Record the appliance model and serial number so the correct board can be confirmed against the manufacturer's documentation.
• Isolate the appliance from the electrical supply before removing or refitting the board, and take a photograph of the wiring layout beforehand.