Mitsubishi FDT100VNXWVH Service Manual page 137

Error code
None
Remote control:
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 indoor unit control PCB
• Broken harness
• Faulty outdoor unit control PCB
(Noise filter)
Note:
RUN light TIMER light
Indoor
display
– –
(Power source to indoor unit control PCB)
Green LED Red LED
Outdoor unit
control PCB
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 fuse OK
(250V 3.15A)?
YES
136
-
Power source system error
Content
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
-
'20 • PAC-SM-351
Countermeasure
Defective outdoor unit
NO
control PCB (Noise filter)
➞ Replace.
Misconnection or breakage
of connecting wires
Replace fuse.
Defective indoor unit
control PCB ➞ Replace.