Washer-dryer combo does not fill with water; display shows D03 shortly after starting a cycle.

Safety first: Unplug the appliance and close the water tap before disconnecting hoses.

• Check water supply: Ensure the wall tap feeding the Brandt combo is fully open. Test water pressure by disconnecting the hose from the machine and running it into a bucket; you should see a strong flow.
• Clean inlet filters: At the back of the machine, remove the inlet hose. Inside the valve connection are small mesh filters. Gently pull them out with pliers, rinse under water, and reinstall.
• Inspect inlet hose: Check for kinks or internal blockages. Replace the hose if damaged or heavily scaled.
• Test inlet valve coils: With power off and rear panel removed, locate the water inlet valve. Disconnect the connectors and measure coil resistance with a multimeter. An open circuit indicates a failed coil; replace the water inlet valve assembly.
• Check wiring: Inspect the harness from the valve to the control board for damage or loose connectors. Repair as needed.
• Control board consideration: If the valve and wiring are good but D03 persists, the main control board may not be energizing the valve. Professional diagnosis and board replacement may be required.