To troubleshoot a refrigerator, identify the symptoms and perform a basic inspection of the refrigerator components that are capable of contributing to the problem. Common refrigerator issues include improper cooling, constant running and interior leaks.
To troubleshoot a refrigerator that is not cooling properly, verify that the refrigerator is plugged in and has not blown a fuse. Next, inspect the thermostat. Accidentally changing the thermostat setting is a common cause of improper cooling. Refer to the refrigerator's manual for the manufacturer's recommended temperature settings. If this does not fix the problem, vacuum the condenser coils.
Many refrigerators that run constantly benefit from a thermostat inspection and condenser coil cleaning. If these measures do not fix the problem, the thermostat may have failed. In this case, the only remedy is to replace the thermostat.
Clogged drainage tubes cause most interior refrigerator leaks. To unblock the tube, turn off the refrigerator and slide it away from the wall. Consult the refrigerator's manual for the location of the tube if you do not know where it is. Pull the tube out of the refrigerator, and irrigate it with equal parts water and bleach until the blockage disappears. Clean the drain pan before reattaching the tube.
These troubleshooting techniques fix many common refrigerator issues. If your problem persists after troubleshooting, seek professional help.