PURPOSE: To decide a refrigerant circuit defect including a compressor and a fan motor defect in a refrigerator by detecting the temperature drop curve of a cooler during the operation of the compressor, and judging the malfunction of the compressor or the circuit when it does not drop to a certain temperature or lower within a predetermined period.
CONSTITUTION: A second temperature detector 2 for detecting the temperature of a cooler 21 is mounted at the cooler 21. Temperature deciding means 26 detects the temperature drop curve of the detector 2 during the operation of a compressor 17 and judges the malfunction of the compressor 17 or a refrigerant circuit when it does not drop to a certain temperature or lower within a predetermined period. A temperature difference between a first temperature detector 1 and the second detector 2 provided in a freezing chamber is detected during the operation of the compressor, defrosting is conducted when the difference is continued at a certain temperature for a predetermined period. Thus, the malfunction of the compressor 17 or the refrigerant circuit can be judged at the temperature of the cooler.
SATO YUTAKA
KOBAYAKAWA TAIICHI
SUZUKI SATOSHI
TAKIMOTO SUNAO
| JPS5623676A | 1981-03-06 | |||
| JPS63123973A | 1988-05-27 | |||
| JPS5647476B2 | 1981-11-10 | |||
| JPH0195255A | 1989-04-13 |