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Appendix
ⅠⅠ
(Reference for circuit diagnostics)
LOAD RELAY TERMINALS VALUE WHEN IT IS DIFFERENT FROM MEASURED VALUE
DEFROST / COMP OFF
RY76 /RY75
SUPPLY
VOLTAGE(SV)
CN71⑪∼⑨
RY75
SV
CN71⑬∼⑨
COMP ON
RY76 /RY75
SV
CN71⑪∼⑨
RY75
0V
CN71⑬∼⑨
DEFROST
CUBE & AUGER
MOTOR OFF
CUBE & AUGER
MOTOR OPERATING
WATER VALVE
DISPENSER OPERATING
WATER VALVE ICE
MAKER OPERATING
F FAN ON
C FAN ON
RY76 /RY75
0V
CN71⑪∼⑨
SV
CN71⑬∼⑨
RY76 CONTACT SHORT,FAULTY DRIVING CIRCUIT
RY75 NO CONTACT SHORT,FAULTY DRIVING CIRCUIT
FAULTY RY75 /
RY76 NO CONTACT SHORT,FAULTY DRIVING CIRCUIT
RY75 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT
FAULTY RY76 /
RY75 NC CONTACT OPEN, FAULTY DRIVING CIRCUIT
RY75 NO CONTACT SHORT,FAULTY DRIVING CIRCUIT
RY73 &RY74 NO CONTACT SHORT,FAULTY DRIVING CIRCUIT
RY74 NO CONTACT SHORT,FAULTY DRIVING CIRCUIT
RY73 OR RY74 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT
RY74 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT
RY79 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT
RY77 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT
RY71 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT
RY72 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT
Turn on Power and check status of Relay & Driving Circuit by checking followings according to load operation.
Check after disassembling connected to MAIN PCB CN30 &CN32
Because it is NTC TYPE Sensor, risistance decreases as temp increases
1. Measure resistance between CN30 ⑧ and ⑨ for R-Sensor.
2. Measure resistance between CN30 ⑤ and ④ for F-Sensor.
3. Measure resistance between CN30 ⑥ and ④ for DEF-Sensor.
4. Measure resistance between CN30 ① and ④ for Ambient-Sensor.
5. Compare the above values with current temps of Sensoer locations and Part Spec in Manual and evalute
them.
RY75
SV
CN71⑨∼CN70③
RY73 /RY74
SV
CN71⑨∼CN70①
RY74
0V
CN71⑨∼CN70③
RY73 /RY74
0V
CN71⑨∼CN70①
RY74
0V
CN71①∼⑨
RY79
0V
CN71⑦∼⑨
RY77
0V
CN71⑨∼CN70⑦
RY71
0V
CN71⑨∼CN70⑤
RY72
Ref.2) Check SENSOR