The clunking when it is shutting off is the compressor.
The noise can be annoying but does not effect the operation of the fridge.
Your freezer and fresh food section are warmer then they should be.
You may have a defrost problem.
Look in the freezer section at the back wall in through the vents and see if there is ice on the coils.
If you can not see in the vents remove the panel.
If there is ice on the coils the unit is not defrosting.
This could be one of three problems.
The defrost timer, the defrost heater or the defrost bi metal.
The defrost timer is located in the fridge section.
The heater and bi metal are in the freezer.
Find the timer in the control panel.
All that you will see of the timer is two screws and knob in between them.
With the compressor running turn the knob until the compressor shuts off.
Your fridge is now in the defrost cycle.
The defrost cycle normally last 20 to 25 minutes.
If the timer is working the fridge will start after that time.
If it does not start you will have to turn the knob until it does and you will need a new timer.
Check the coils again.
If they have defrosted the heater and bi metal are good.
If the fridge does start on it own and did not defrost you will have to check the heater and bi metal with a meter.
Here is a link to your
fridge model tfh30prta ww.
Here is the defrost timer.
Here is the heater and bi metal assembly.
