Power Source System Error (Power Source To Indoor Control Pcb) - Mitsubishi Heavy Industries FDT200VSAPVF1 Service Manual

Error code
Remote control: None
1. Applicable model
All models
2. Error detection method
3. Condition of Error displayed
4. Presumable cause
• Misconnection or breakage of
connecting wires
• Blown fuse
• Faulty transformer
• Faulty indoor control or
power PCB
• Broken harness
• Faulty outdoor control PCB
(Noise filter)
Note:
LED Green Red
Indoor Stays OFF Stays OFF
(Power source to indoor control PCB)
Outdoor Stays OFF 2-time flash
5. Troubleshooting
Diagnosis
Is
AC220/240V
detected between 1 and
2 on the terminal block
of indoor
unit?
YES
Are fuses OK?
YES
Is DC5V
detected between �-�
of CNW1?
Note (2) � for GND
YES
Is JX1 open?
69
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Content Power source system error
NO
Is
AC380/415V
for 3-phase unit
detected between 1, 2 and 3
on the teminal block
of outdoor unit?
YES
Note(1) FDT, FDUM : F1, F2, FDU : F3
FDTC, FDF : F200, F201
(1)
FDEN : Fuse between wires.
NO
Is the
check of resistance
between �-� of CNW0
(FDU : T1-T2)
OK?
YES
Is the
checked result
of resistance of fan
motor, etc
OK?
YES
(2)
NO
NO
YES
-
'14 • PAC-SM-215
Countermeasure
Defective outdoor control
NO
PCB (Noise filter)
Misconnection or breakage
of connecting wires
Defective indoor power
NO
PCB ➞ Replace.
Replace fan motor, etc.
NO
Replace fuse.
Defective indoor power
PCB ➞ Replace.
Open JX1.
Defective indoor control
PCB ➞ Replace.