80
TROUBLESHOOTING
- The refrigerator of this model has BLDC FAN motor. BLDC motor is driven by DC 7~12V.
- On the normal condition of COMP ON, it operates together with F-FAN motor.
If door is opened and closed once at a high ambient temperature, it will be operated after 1 minute
delay.
Therefore, you are advised not to taken it for an error.
-. If there is a trouble, you should select the self-diagnostic function to check the trouble before power off.
4-2-2. If FAN does not operate
Start
Is COMPRESSOR ON ?
Door & MICOM State
Door
F FAN pulse voltage
CN76#7(Brown)
The voltage measured around 2~3V
with multi-meter though the voltage is
very weak because of pulse signal
☞
Display for checking the self-diagnostic function
Typical PCB Ground
REG1 Heater Sink
F
MICOM
(#83)
Close
Open
5V(High)
0V(Low)
0V(Low)
5V(High)
R MICOM(#82)
Right and Left
Execute manual
operation
FAN work normally
Repair the connection
of Door switch
Replace MAIN PCB
1) F-FAN
Typical PCB Ground
REG1 Heater Sink
Power ON with 5 minutes
delay after power OFF.
For preventing the over
load of compressor)
◆
Expected causes
①
Check that if FAN-MOTOR has failure
itself.
②
Check that if wiring connection has bad
contact.
③
Check the input of the fan motor rotation
pulse when motor fan operates.
CN76-7(F),8(R),9(C)will generate the pulse signal when motor rotates.
These signals will be inputted into MICOM.
Unless signals are not inputted during motor operating, will be ON 10
seconds after fan Off. But if signals are not still entered, the above
operation will restart four times more.
If signals are not entered continuously, the motor will be restarted after
10 Minutes. This function is effective when the normal operation of motor
would be restrained by foreign matters such as ice.
☞
Checking method of R,F,C FAN Motor voltage
The voltage between PCB typical Ground REG1 Heater Sink and
F FAN ; CN76#3(Yellow) shall be less than DC 7~12V.
R FAN ; CN76#4(Orange) shall be less than DC 7~12V.
C FAN ; CN76#5(Sky-blue) shall be less than DC 7~12V.
- Recheck if resistance values are different after measuring.
Is the voltage between MAIN
PCB REG1 Heater Sink and CN76#3
(Yellow) around DC7~12V?
Is the voltage between MAIN
PCB REG1,Heater Sink and CN76#4
(Orange) around DC7~12V?
Is the voltage between MAIN
PCB REG1, HEAT SINK and CN
76#5(Sky -blue) around DC7~12V?
Is the external temperature
above 66.2
℉
(19
℃
)?
Recheck after 5 minutes
(Time could be delayed
depending on the
temperatures. If the
temperature is lower, It
may not operate : about
59
℉
(below 15
℃
)
Is the voltage between MAIN
PCB REG1,Heater Sink and CN
30#2 (Purple) around 0V?
Is the voltage between MAIN
PCB REG1 Heater Sink and CN30#1
(Black) around 4.5~5V?
Does DC7~12V alternate with
below DC 2V between MAIN PCB REG1
Heater Sink and CN76 #3(Yellow)
Does DC7~12V alternate with below
DC 2V between MAIN PCB REG1 Heater
Sink and CN76#4(Orange)
Does DC7~12V alternate with below
DC 2V between MAIN PCB REG1 Heater
Sink and CN76#5(Sky-blue)
In initial power to appliance, the compressor
and fans of fresh food/ freezer, compressor
fan operate. If freezer temperature is sensed
of 41
℉
by momentary power failure, fans
will operate after 5 minutes.
Reference
2) R-FAN
3) C-FAN
R FAN ERROR
F FAN ERROR
C FAN ERROR
AW3 SM-EN 2011.3.31 2:56 PM 페이지80 in
Содержание RF4287HABP
Страница 17: ...18 PRODUCT SPECIFICATIONS 2 5 Dimensions of Refrigerator Inches AW3SM EN2011 3 312 52PM페이지18 in ...
Страница 20: ...21 PRODUCT SPECIFICATIONS 2 7 1 PRINCIPLE OF FREEZEER BACK CLUSTER PIPE AW3SM EN2011 3 312 52PM페이지21 in ...
Страница 86: ...87 TROUBLESHOOTING IPM FREEWHEELING DIODE VOLTAGE VALUE AW3SM EN2011 3 312 56PM페이지87 in ...
Страница 96: ...97 TROUBLESHOOTING SPM Internal DIODE Voltage AW3SM EN2011 3 312 56PM페이지97 in ...
Страница 98: ...99 TROUBLESHOOTING INVERTER PCB Circuit Diagram AW3SM EN2011 3 312 56PM페이지99 in ...
Страница 115: ...116 EXPLODED VIEW PARTS LIST 5 6 Disassembly of Door Refrigerator R 5 1 3 2 6 4 5 5 AW3SM EN2011 3 312 57PM페이지116 in ...
Страница 122: ...123 6 3 Connector Layout with part position Main Board PCB DIAGRAM 6 3 1 RF4287HA AW3SM EN2011 3 312 57PM페이지123 in ...
Страница 123: ...124 6 4 Connector Layout with part position Inverter Board PCB DIAGRAM 6 4 1 RF4287HA AW3SM EN2011 3 312 57PM페이지124 in ...
Страница 124: ...125 7 1 Model RFG295AA BETTER 7 WIRING DIAGRAM BLU BLU AW3SM EN2011 3 312 57PM페이지125 in ...
Страница 125: ...126 7 2 Model RF4287AA BEST 7 WIRING DIAGRAM AW3SM EN2011 3 312 57PM페이지126 in ...
Страница 126: ...127 7 3 Model RFG299AA 7 LCD 7 WIRING DIAGRAM BLU BLU AW3SM EN2011 3 312 57PM페이지127 in ...
Страница 127: ...128 7 4 Model RFG294AA SEARS 7 WIRING DIAGRAM AW3SM EN2011 3 312 57PM페이지128 in ...
Страница 128: ...129 8 1 Whole block diagram 8 SCHEMATIC DIAGRAM 8 1 1 MAIN BLOCK RF4287 AW3SM EN2011 3 312 58PM페이지129 in ...
Страница 129: ...130 8 SCHEMATIC DIAGRAM 8 1 2 INVERTER BLOCK RF4287 AW3SM EN2011 3 312 58PM페이지130 in ...
Страница 130: ...131 8 2 CIRCUIT DIAGRAM SCHEMATIC DIAGRAM 8 2 1 MAIN AW3SM EN2011 3 312 58PM페이지131 in ...
Страница 131: ...132 SCHEMATIC DIAGRAM 8 2 2 INVERTER AW3SM EN2011 3 312 58PM페이지132 in ...