Cool, Not Enough [ Both Pc & Fc (Compressor Operates) ] - Panasonic NR-B37MV2 Service Manual

NR-B37MV2 / NR-B41MV2
8.2 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
pushes, does cold air spout out from
2
exhaust?
To start self diagnosing function by
opening PC door and FC door and push-
3
ing "Quick Freezing" SW for 5 seconds.
Does "Energy Saving" and "Quick
4
Freezing" turn on?
Does "Energy Saving" turn off and
4
"Quick Freezing" blinking?
Does "Energy Saving" turn off and
5
"Quick Freezing" turn on?
Does "Energy Saving" turn off and
7
"Quick Freezing" turn off?
Does "Energy Saving" and "Quick
11
Freezing" blink?
Does frost adhere to evaporator much?
9
NO
YES
NO
YES
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
NO
YES
•
• 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
•
fuse blow
6 • Poor connection between DFC
out?
YES
•
• Poor connection between FFC
Does thermal NO
•
fuse blow
8 • Defect of PCB as like as defect of
out?
YES
•
• Abnormal of spec of DFC thermistor.
•
• Plug out and after few seconds
•
•
- 13 -
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.
plug in again.
Defect of refrigant unit.
Gap of door, etc.