Hi,
The refrigeration unit could be low on charge or even over charged..but only gauges will tell that story...and a pro to read them properly...
but...
Many times a freezer and/or refrigeratordo not work right because of a dirty condenser coil...there are also many otherthings that can go wrong. If you are hearing a clicking or buzzing then checkout the last two tips.
If your refrigerator is running but warm, then...
Check out this tip that I wrote about that... it is a great place to starttrouble shooting your unit...and something that you can do rather then callinga repair person to do a simple thing for you...
Refrigerator
Condenser Coil Cleaning Refrigerator Repair
Refrigerator Troubleshooting Refrigerator Compressor
Refrigerator Compressor Start Capacitor and Start Relay
heatman101