Error code
Remote controller:
7-segment display:
LED
Green
Red
Indoor
Outdoor
Content
–
357
–
E48
E48
Outdoor DC fan motor anomaly
Keeps flashing Stays Off
Keeps flashing 1 time flash
1. Applicable model
5. Troubleshooting
FDC112-155KXEN6
FDC112-155KXES6
Diagnosis
Countermeasure
Does
any foreign material
intervene in rotational area of
fan propeller?
Does
the fan rotate
smoothly when turned
by hand?
Save data for 30 minutes before stoopping in Mente PC
NO
YES
YES
NO
YES
Is
the voltage between
�
(Red)
�
(Blue) of fan motor
connector(CNFAN)
DC280V?
Is the fuse blown ?
NO
(1)
NO
Reset the power
Note (1) Fuse of 112 type is F3
Does it become normal?
YES
YES
NO
Check and save the data of
operating conditions.
Remove foreign material.
Replace fan motor
If the resistance between
➀
(Vm : Red) and
➃
(GND
Blue) is 1Ω or lower, it is
defective.
Check the power supply
voltage
Replace defective fan
motor and outdoor control
PCB
Replace fan motor
After replacement of fan
motor, if this error still
occurs, replace outdoor
control PCB as well.
Temporary noise may cause
2. Error detection method
By detecting the rotation speed
of outdoor fan motor.
3. Condition of error displayed
If the actual rotation speed of
outdoor fan motor (CM1, CM2)
is 100min-1 or lower for 30
seconds continuously, outdoor
fan stops. After 3-minute delay,
it restarts automatically, but if
this anomaly occurs 5 times
within 60 minute after the initial
stop.
4. Presumable cause
• Faulty outdoor control PCB
• Foreign material in rotational
area of fan propeller
• Faulty fan motor
• Dust on the outdoor control
PCB
• Blown fuse
Note:
When E48 error occurs, in almost cases F2 fuse (4A) on the harness is blown. There are a lot of cases that fuse is blown
due to defective fan motor. And even though only the fuse is replaced,, another trouble (*) could occur. Therefore when
replacing fuse, check whether the fan motor is OK or not.
After confirming the fan motor normal, check by power ON. (Don't power ON without confirming the fan motor normal.)
*1 The error which does not seem to relate E48 may occur like as "WAIT", Stay OFF of LED on outdoor control PCB,
inverter communication error (E45) and etc.
Summary of Contents for FDC112KXEN6
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