55
4. TROUBLESHOOTING
4-2-2) When the Freezer Fan does not operate (BLDC Motor)
- This refrigerator uses the BLDC Fan Motor. (OPTION)
The BLDC Motor operates with DC 7~12V.
- The F-Fan motor generally runs together with the compressor.
The Compressor is Off.
It reads DC7~12
between MAIN PCB
GND and CN72 #9
It repeats DC7~12V,
and DC 2V or lower between MAIN PCB GND
and CN72 PIN #6
Start
Run Forced Operation
FAN operates.
Replace MAIN PCB
No
Yes
No
Yes
Yes
Yes
Note
Pulse signals being generated when the motor is rotating are to
be input to CN72 #9 (F). These will be input to MICOM and when
there are no input signals with the motor rotating, the fan will be
turned off and then be turned on in 10 seconds. If there are still
no input signals, it keeps trying the above 4 times. And, if it still
fails, it runs the motor in 10 minutes. It is implemented to prevent
the motor from being overloaded due to restrictions by foreign
substances such as ice built up around the motor.
Upon the initial power on, the compressor
and the F-Fan operate for 7 minutes
regardless of the conditions.
(But, when the Freezer temp is lower
than 5
℃
, it will be regarded as an instant
power failure, starting in 7 minutes.)
Apply power in 7 minutes after
turning the motor off. (To prevent the
compressor from being overloaded)
◆
Possible Causes
①
Defective FAN-MOTOR
②
Contact problem at the terminal
(MAIN PCB CONNECTOR-TERMINAL (CN72.
⑥
,
⑨
,
⑩
), Contact problem at Freezer Fan Motor Connector,
Defective Motor Wire)
③
Check the motor rotating pulse input upon Fan Motor
operation. (Refer to Fan-Motor Circuit in this manual)
No
☞
When checking with the Self Diagnosis
F FAN ERROR
No
BAR-TYPE
7-Segment
Summary of Contents for RL60GG Series
Page 75: ...75 5 PCB DIAGRAM 5 3 Connector Layout and Description Main Board 5 3 1 Q G J OPTION...
Page 76: ...76 5 PCB DIAGRAM 5 3 2 R P Z H Option...
Page 77: ...77 5 PCB DIAGRAM 5 3 3 L Option...
Page 78: ...78 5 PCB DIAGRAM 5 3 4 W E Option...
Page 80: ...80 5 PCB DIAGRAM IPM DIODE VOLTAGE 5 5 IPM Diode Voltage...
Page 81: ...81 6 WIRING DIAGRAM 6 1 Q G J OPTION...
Page 82: ...82 6 WIRING DIAGRAM 6 2 R P Z H Option...
Page 83: ...83 6 WIRING DIAGRAM 6 3 L Option...
Page 84: ...84 6 WIRING DIAGRAM 6 4 W E Option...
Page 85: ...85 6 WIRING DIAGRAM 6 5 S Option...
Page 86: ...86 7 CIRCUIT DIAGRAM 7 1 Schematic Diagram PBA Main 7 1 1 Q G J OPTION...
Page 87: ...87 7 CIRCUIT DIAGRAM 7 1 2 R P Z H L Option...
Page 88: ...88 7 CIRCUIT DIAGRAM 7 1 3 W E S Option...
Page 89: ...89 7 CIRCUIT DIAGRAM 7 2 Schematic Diagram PBA Inverter...
Page 90: ...90 7 CIRCUIT DIAGRAM 7 3 Block Diagram PBA Main...
Page 91: ...91 7 CIRCUIT DIAGRAM 7 4 Block Diagram PBA Inverter G H L P R Z Option...
Page 92: ...92 7 CIRCUIT DIAGRAM 7 5 Block Diagram PBA Inverter Q J Option...