Mitsubishi FDT71VH User Manual

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88
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'20 • PAC-SM-351
Error code
Remote control:
LED Green Red
Indoor
Stays OFF Stays OFF
Outdoor 2-time flash
Content
Keeps flashing
None
Power source system error
(Power source to indoor unit control PCB)
1. Applicable model
5. Troubleshooting
Diagnosis Countermeasure
NO
Are fuses OK ?
(F1,2)
YES
YES
Is the
check of resistance between
➀-➂ of CNW0
OK?
NO
Is the
checked result
of resistance of FM,
LM, etc
OK?
NO
NO
(1)
Note (1) ➄ for GND
Is DC5V
detected between ➃-➄
of CNW2?
NO
YES
YES
YES
Is JX1 open?
Is
AC220/240V
detected between
ձ and
ղ on the terminal block
of indoor
unit?
NO
YES
NO
Is
AC380/415V
for 3-phase unit detected
between
ձ , ղ and ճ on the teminal
block of outdoor unit or is AC220/240V
for 1-phase unit detected between
ձ and ղ on the terminal
block of outdoor
unit?
YES
Defective outdoor unit
control PCB (Noise lter).
➞
Replace.
Misconnection or breakage
of connecting wires.
Defective indoor unit
control PCB
➞
Replace.
Replace FM, LM, etc.
Replace fuse.
Defective indoor unit
control PCB
➞
Replace.
Open JX1.
Defective indoor unit
control PCB
➞
Replace.
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 control
PCB
• Broken harness
• Faulty outdoor unit control
PCB (Noise filter)
Note:

Mitsubishi FDT71VH Specifications

General

Brand	Mitsubishi
Model	FDT71VH
Category	Air Conditioner
Language	English