My refrigerator and freezer are running but are both warm inside. There is no coldness inside. What can I troubleshoot?

Verify that both the evaporator and condensing fan motors are working. Is th compressor coming on? Pull unit away from the wall and clean the coils and condensing fan and motor very well. It doesn't take much dirt build-up back there to effect cooling. Next check to verify that the defrost heater is not continuoisy on. If it is the cooling cycle can never overcome the heat from it. If the heater never goes off. Turn the defrost timer till it clicks and see if it goest off. Many times the timer will stick. If this was the case, I would replace the timer as if it stuck once, more than likely it will happen again. Good Luck