The valve for the water dispenser is at the back of the fridge where the water line hooks to the fridge.
All that is in the front is a switch.
There could be dirt in the valve holding it opened a bit or you may have low water pressure to the fridge.
To check the water pressure shut the water supply to the fridge off and remove the line.
Hold the line in a bucket and have someone turn the water on.
If you have low pressure and the rest of the house is fine you will have to replace the shut off valve in your water line.
Here is a link to your fridge model TFX 27 FLJ. |