Show the troubleshooting of the walk-in cooler defrosting controller
1. Common faults of the defrosting controller
Show the walk-in cooler defrosting control device failure manifestations mainly include: walk-in cooler can not defrost, refrigerator side The compressor cannot be automatically put into operation after the frost side refrigeration and walk-in cooler defrosting. These faults are mainly caused by the burning of the defrosting heater, the damage of the defrosting timer, and the fuse of the defrosting overheating fuse.
2. Troubleshooting
The overhaul of the walk-in cooler defrosting control device can be performed as follows.
(1) Measure the DC resistance of the defrost timer motor with a multimeter RXlk. The normal value is about 8kQ. If the measured resistance value is too small, there is a short circuit fault in the coil: if the resistance value is too large, there is an open circuit in the coil. If it fails, replace the defrost timer. If the resistance is normal, check whether the shaft of the
walk-in cooler defrost timer hand control knob can be turned when the power is turned on. If it does not rotate, the internal mechanical gear is faulty, and the defrost timer must be replaced or removed and repaired. (2) Measure the walk-in cooler defrost thermostat with a multimeter R× l block, the measured value at room temperature should be infinite, and put the defrost thermostat into the refrigerator freezer to measure its resistance value should be zero. If the resistance is infinite or tens of ohms, it means that the defrost thermostat of the walk-in cooler is damaged and needs to be replaced. (3) with a multimeter R>Ranking of similar articles
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