Start refrigeration compressors , compressor showed normal ; refrigeration piping failures . Failure may compressor control circuit . Compressor control circuit transistor Q811 base voltage is critical voltage , when the Q811 base voltage > 0.7V, Q811 is turned on , the compressor relay K1 pull its normally open contacts K1-1 turn on the compressor , compressed machine starts cooling. Decrease with temperature inside the refrigerator , the freezer temperature sensor resistance rises to the control circuit outputs <0.5V, low cut so Q811 , compressor relay K1 is released , the normally open contacts K1-1 Disconnect the compressor power , refrigeration compressor stall end . With the refrigerator temperature control circuit output high , Q811 is turned on , the compressor to restart cooling, and so forth to keep the refrigerator temperature setting value . When the inner temperature of the refrigerator has dropped setting value, the base voltage of Q811 measured 0.45V, the control circuit indicates normal . Failure may be shorted relay Kl and transistor breakdown . First check the relay K1, normally open contacts has found a welded together, resulting in long-term operation of the compressor stop . After replacing the relay with the same model , refrigerator resume normal operation.GDWservice manual download site