Cool, Not Enough [ Both Pc & Fc (Compressor Operates) ] - Panasonic NR-BW415XS Service Manual

NR-BW415 / NR-BW465
10.2 Cool, not enough [ Both PC & FC (compressor operates) ]
To confirm when compressor is operating.
When FC door opens and FC door SW
1
pushes, does cold air spout out from
exhaust?
When PC door opens and PC door SW
2
pushes, does cold air spout out from
exhaust?
To start self diagnosing function by
3 opening PC door and FC door and push-
ing "Quick Freezing" SW for 5 seconds.
Does "ECONAVI LED" and "Quick
4
Freezing" turn on?
Does "ECONAVI LED" turn off and
4
"Quick Freezing" blinking?
Does "ECONAVI LED" turn off and
5
"Quick Freezing" turn on?
Does "ECONAVI LED" turn off and
7
"Quick Freezing" turn off?
Does "ECONAVI LED" and "Quick
9
Freezing" blink?
NO
YES
NO
YES
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
•
• Poor connection between FC fan
• Defect of FC door SW.
•
• Defect of PC door SW.
•
• Poor connection between FC fan
•
• Poor connection between FCC
• Abnormal of spec of DFC thermistor.
Does thermal
NO
•
6 fuse blow
• Poor connection between DFC
out?
YES
•
• Poor connection between FFC
Does thermal
NO
•
8
fuse blow
• Defect of PCB as like as defect of
out?
YES
•
• Abnormal of spec of DFC thermistor.
•
• Plug out and after 7 minute plug in
- 17 -
Defect of FC fan motor.
motor and IC 1 on PCB.
Defect of damper.
Defect of FC fan motor.
motor and IC 1 on PCB.
Break of FCC thermistor.
thermistor and IC 1 on PCB.
* Resistor of thermistor is bigger as
like as 5.9 - 6.5 K Ω at 0°C
Short of DFC thermistor.
thermistor and IC 1 on PCB.
Break of DFC thermistor.
thermistor and IC 1 on PCB.
Break of DFC thermistor.
relay, etc.
Termal fuse blows.
* When resistor of thermistor is
bigger as like as 6.1 - 6.7K Ω at 0°C,
there is some case to blow thermal
fuse out due to becoming defrost
time longer.
Defect of communication circuit and
EEPROM circuit of control PCB.
again.