Washer-dryer combo displays E10 and will not start; often associated with low or no water supply.

Safety first: Unplug the unit and close water supply valves before disconnecting hoses.

• Verify water supply: Confirm that both hot and cold faucets feeding the washer are fully open. Check water pressure at a nearby sink.
• Clean inlet screens: Disconnect hoses from the rear of the unit and clean the small filter screens inside the inlet ports. Remove sediment with a soft brush.
• Check hoses: Inspect hoses for kinks or internal collapse. Replace if suspect.
• Test fill on different cycle: Try a cold-only cycle and then a hot-only cycle to see if one side is not filling, which can indicate a single failed valve coil.
• When to replace parts: If water supply is adequate and screens are clean but E10 persists, replace the water inlet valve assembly.