Washer-dryer combo displays HC or HC error and water temperature seems incorrect.

Safety first: Turn off water supply before disconnecting hoses.

• Verify connections: Check that the hot hose from the hot faucet is connected to the hot inlet on the washer (usually marked red or 'H') and cold to cold (blue or 'C').
• Swap hoses: If reversed, swap the hoses at the back of the unit.
• Run test cycle: Run a warm cycle and confirm correct temperature.