It sounds like there might be an issue with your washing machine that is causing it to struggle with larger loads. Here are some troubleshooting steps you can follow to try and fix the problem:
Check the load size: Make sure you're not overloading the machine with too many clothes. Large loads can put a strain on the machine, and it may not function properly if it's overloaded.
Balance the load: Unevenly distributed clothes inside the machine can also cause it not to spin. Make sure the clothes are distributed evenly around the agitator or drum.
Check the lid/door switch: If you have a top-loading washing machine, the lid switch might be faulty. The machine won't spin if it doesn't detect that the lid is closed. For front-loading machines, there's usually a door lock mechanism that can cause similar issues.
Inspect the belt: If you have a top-loading machine, it may have a belt that drives the spinning action. If this belt is loose, damaged, or broken, it won't spin properly. You'll need to access the belt and check its condition.
Examine the motor: The motor is responsible for driving the spinning and draining actions. If the motor is faulty, the machine won't function properly. Listen for any unusual noises when the machine should be spinning, as that may indicate motor problems.
Check the drainage system: If the machine isn't draining the water properly, it may not enter the spin cycle. Ensure that the drainage hose is not clogged or kinked, preventing the water from draining out.
Inspect the control board: Modern washing machines have electronic control boards that regulate various functions. A malfunctioning control board might be the cause of the issue.
Clean the fabric softener dispenser: If your washing machine has a fabric softener dispenser, it may be clogged or blocked, preventing the softener from being dispensed.
If you're comfortable with DIY repairs, you can attempt to troubleshoot and fix these issues on your own. However, if you're unsure or not confident in handling these repairs, it's best to call a professional appliance repair technician. They will have the necessary expertise and tools to diagnose and fix the problem safely.
Remember to always unplug the washing machine before attempting any repairs to ensure your safety.