If the freezer defrost controller failure, how to check and deal with it; manifestation defrost control device failure are: not defrost freezer, defrost side while cooling the machine after the end of defrost the compressor does not automatically put into operation . These failures are mainly defrost heater burnout, defrost timers damage caused by frost super hot blown fuse and other reasons.

Fault repair, overhaul defrost control device can perform the following steps.

(1) with a multimeter block measuring RX lk defrost timer motor DC resistance, the normal value of about 8kQ, such as the measured resistance value is too small, the coil has a short circuit fault: If the resistance is too large, the coil has a break fault, replace the defrost timers b if the resistance is normal, in the case of power, and to see if a manual defrost timer knob shaft rotatably. If it does not rotate the internal gear mechanical failure, but also to replace the defrost timers repaired or removed.

(2) with a multimeter block measuring RX l defrost thermostat, measured at room temperature should be infinite, the defrost thermostat placed in freezer freezer measure the resistance should be zero. If the resistance is infinite or dozens of Europe, indicating that the defrost thermostat is damaged, replace it.

(3) with a multimeter block measuring RXl defrost heater resistance, normal for a few hundred ohms. If the measured value is infinite, indicating defrost heater has been broken, it should be replaced.