Possible Causes of E4 error code:

• Closed or partially closed water tap: 
  • Ensure both hot and cold water taps are fully open.
• Kinked or blocked water hose: 
  • Check for any bends or obstructions in the hoses connecting the machine to the water supply. Inspect for debris or limescale buildup that might restrict water flow.
• Low water pressure: 
  • If your home has low water pressure, the machine might not be able to fill properly. Check with your local water authority or plumber.
• Faulty inlet valve: 
  • In rare cases, the valve that controls water flow into the machine might be malfunctioning.

Other potential causes: 

• Less common possibilities include issues with the control board, pressure sensor, or drain hose (if it's connected incorrectly, causing water to siphon out).

Troubleshooting the E4 error code in Haier Washing Machine

Important disclaimer: Before attempting any troubleshooting, always unplug the washing machine for safety reasons. Consult your user manual for specific instructions related to your model.

1. Check the water taps: 
   • Ensure both hot and cold water taps are fully open. Try turning them off and on again to clear any potential blockage.
2. Inspect the water hoses: 
   • Look for any kinks, twists, or damage in the hoses connecting the machine to the water supply. Straighten any kinks and replace damaged hoses.
3. Clean the water inlet filters: 
   • Some models have filters at the water inlet connection points. Consult your manual to locate and clean these filters if applicable.
4. Check water pressure: 
   • Run water from your taps to see if the flow is strong and consistent. If it's weak, contact your local water authority or plumber.
5. Reset the machine: 
   • Sometimes, a simple reset can clear temporary glitches. Unplug the machine for a few minutes and then plug it back in.

If the problem persists:

• Consult your user manual: Refer to your specific model's manual for any troubleshooting instructions related to the E4 code. It might provide additional details or model-specific steps.
• Contact Haier support: They can offer further assistance, diagnose the issue based on your model, and advise on professional repair if necessary.
• Seek professional repair: If the cause seems complex or you're not comfortable troubleshooting yourself, a qualified technician can properly diagnose and fix the problem.

Additional Information:

• The specific troubleshooting steps might vary slightly depending on your Haier washing machine model.
• It's crucial to prioritize safety and avoid any actions that could damage the machine or void your warranty.
• If you're unsure about any step, consult your manual or seek professional help.

If you need further assistance, please prioritize safety and consult the appropriate resources.