Indoor Dc Fan Motor Anomaly - Mitsubishi Heavy Industries KXZ Series Service Manual

Error code
Remote control: E16
7-segment display: -
Note (1) Value in (
1.Applicable model
FDT, FDTC, FDTW, FDTS,
FDU, FDUM, FDUT71, FDK,
FDFW, FDU-F series only
2.
Detected by rotation speed of
indoor fan motor
.Condition of Error displayed
indoor fan motor drops to lower
-1
detection.
4. Presumable cause
PCB
area of fan propeller
Note:
LED Green Red
1(2)-time
Indoor
Outdoor Stays OFF
y.
5.T
Does any
foreign material
intervene in rotational area
of fan propeller?
NO
YES
Is DC280V detected
between
of fan power PCB connector
CNM?
YES
Is DC280V
detected between
motor control PCB connector
CNM?
YES
Power source reset
Is it normalized?
( Is DC280V detected between
of motor control PCB
connector CNM? )
-

Indoor DC fan motor anomaly

Content
(FDT, FDTC, FDTW, FDTS, FDU, FDUM
FDUT71, FDK, FDFW, FDU-F series)
Diagnosis
YES
NO
Note(1) or for GND
Note(2) Value in (
FDK, FDFW
Value in (
FDU224,280KXZE1 and
(1),(2)
FDU1800,2400FKXZE1
NO
blown?
YES
FDU1800,2400FKXZE1 (FM1)
only.
of
NO
FDU224,280KXZE1 and
FDU1800,2400FKXZE1 (FM1)
(4)
only.
NO
YES
88
-
'14 • KX-SM-221
Countermeasure
Remove foreign material.
NO
Replace faulty fan motor
and power PCB.
between motor PCB and
power PCB.
Replace fan motor.
[
PCB.
(FDU224,280KXZE1 and
FDU1800,2400FKXZE1
(FM1) : Motor contrl PCB)]
Malfunction by temporary
noise.
r.