Mitsubishi Heavy Industries FDT200VSAWPVH Service Manual page 73

Error code
Remote control: None
1. Applicable model
FDT, FDTC series only
2. Error detection method
3. Condition of error displayed
4. Presumable cause
• Misconnection or breakage of
connecting wires
• Blown fuse
• Faulty transformer
• Faulty indoor unit PCB
• Broken harness
• Faulty outdoor unit main PCB
(Noise filter)
Note:
LED Green Red
Indoor Stays OFF Stays OFF
Outdoor 2-time flash
Keeps flashing
5. Troubleshooting
Diagnosis
Is
AC220/240V
detected between 1 and
2 on the terminal block
of indoor
unit?
YES
Are fuses OK?
YES
Is DC280V
detected between
CNM1 - ?
YES
Is DC8V detected
between CNP - ?
YES
Is JX1 open?
72
-
Content Power source system error
(Power source to indoor unit control PCB)
NO
Is
AC380/415V
for 3-phase unit detected
between 1, 2 and 3 on the teminal
block of outdoor unit or is AC220/240V
for 1-phase unit detected between
1 and 2 on the terminal
block of outdoor
unit?
YES
NO
Is the
check of resistance between
Œ-Ž of CNW0
OK?
YES
Is the
checked result of
resistance of fan motor,
louver motor, etc
OK?
YES
NO
NO
None of
actuator, etc. is
short-circuited?
YES
YES
-
'21 • PAC-SM-383
Countermeasure
Defective outdoor unit main
NO
PCB (Noise filter)
Misconnection or breakage
of connecting wires
NO
Defective indoor unit control
or power PCB  Replace.
Replace fan motor, louver
NO
motor, etc.
Replace fuse.
Indoor unit PCB anomaly
 Replace it.
NO Replace related parts.
Defective indoor unit PCB
 Replace.
NO
Open JX1
Defective indoor unit PCB
→ Replace.