Indoor Dc Fan Motor Anomaly - Mitsubishi Heavy Industries FDT200VSAPVF1 Service Manual

Error code Error code
E16
Remote control: Remote control:
Note (1) Value in ( ) is for the FDU, FDUM series FMI2 only.
1. Applicable model
DC fan motor only
2. Error detection method
Detected by rotation speed of
indoor fan motor
3. Condition of Error displayed
When actual rotation speed of
indoor fan motor drops to lower
-1
than 200min for 30 seconds
continuously, the compressor
and the indoor fan motor
stop. After 2-seconds, it starts
again automatically, but if this
error occurs 4 times within
60 minutes after the initial
detection.
4. Presumable cause
• Defective indoor power PCB
• Foreign material at rotational
area of fan propeller
• Defective fan motor
• Dust on control PCB
• Blown fuse
• External noise, surge
Note:
LED LED Green Green Red Red
Keeps flashing 1 ( 2 ) -time flash
Indoor Indoor
Keeps flashing Stays OFF
Outdoor Outdoor
5. Troubleshooting
Diagnosis
Does any
foreign material
intervene in rotational area
of fan propeller?
NO
Does the fan
rotate smoothly when turned
by hand?
YES
(1),(2)
Is DC280V
detected between
of fan power PCB connector
CNM(CNM1,2)?
YES
(4)
Is DC280V
detected between of
motor control PCB connector
CNM?
YES
Power source reset
(4)
Is it normalized?
(Is DC280V detected between
of motor control PCB
connector CNM? )
85
-
Content Content

Indoor DC fan motor anomaly

YES
NO
Note(1) for GND
Note(2) Value in ( ) are for the
model FDU,FDUM.
NO
(3)
NO
Is the fuse blown?
YES
Note(3) FDT:F3, FDTC FDF:F202
FDU:F1,F2 FDUM:F3,F4
NO
Note(4) FDU(FM1) only.
Note(4) Value in ( ) are for the
model FDU(FM1).
NO
YES
-
'14 • PAC-SM-215
Countermeasure
Remove foreign material.
Replace the fan motor.
Check power voltage.
Replace faulty fan motor
and power PCB.
Replace harness assy
between motor PCB and
power PCB.
Replace fan motor.
〔 If the error persists after
replacing the fan motor,
replace the indoor control
PCB (FDU : Motor contrl
PCB) 〕
Malfunction by temporary
noise.