NR-BY558/NR-BY55B/NR-BY608
10.2 Cool, not enough [ Both PC & FC (compressor operates) ]
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
When FC door opens and FC door
SW pushes, does cold air spout out
from exhaust?
• Defect of FC fan motor.
• Poor connection between FC fan
motor and IC 1 on PCB.
• Defect of FC door SW.
• Break of FCC thermistor.
• Poor connection between FCC
thermistor and IC 1 on PCB.
• Abnormal of spec of DFC thermistor.
* Resistor of thermistor is bigger as like
as 5.9 - 6.5 K at 0°C
• Termal fuse blows.
• Abnormal of spec of DFC thermistor.
* When resistor of thermistor is bigger
as like as 6.1 - 6.7K at 0°C, there is
some case to blow thermal fuse out
due to becoming defrost time longer.
• Defect of damper.
• Defect of PC door SW.
• Defect of FC fan motor.
• Poor connection between FC fan motor
and IC 1 on PCB.
• Short of DFC thermistor.
• Poor connection between DFC
thermistor and IC 1 on PCB.
• Defect of communication circuit and
EEPROM circuit of control PCB.
• Plug out and after 7 minute plug in
again.
• Break of DFC thermistor.
• Poor connection between FFC
thermistor and IC 1 on PCB.
• Break of DFC thermistor.
• Defect of PCB as like as defect of relay,
etc.
When PC door opens and PC door
SW pushes, does cold air spout out
from exhaust?
To start self diagnosing function by
opening PC door and FC door and
pushing “Quick Freezing” SW for 5
seconds
.
Does “ECONAVI Led” and “Quick
Freezing” turn on?
Does “ECONAVI Led” turn off and
“Quick Freezing” blinking?
Does “ECONAVI Led” turn off and
“Quick Freezing” turn on?
Does thermal
fuse blow
out?
Does thermal
fuse blow
out?
Does “ECONAVI Led” turn off and
“Quick Freezing” turn off?
Does “ECONAVI Led” and “Quick
Freezing” blink?
To con
fi
rm when compressor is operating.
1
2
3
4
4
5
6
8
9
7
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