Mitsubishi Electric SRK100VNPZJX, Technical Manual

Page: 371 / 509

'12 • PAC-T-174
WAIT
Communication error at
initial operation (1/3)
Keeps flashing
Keeps flashing Stays OFF
2 times flash
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
NO
NO
NO
“ ” is still displayed on the
remote controller LED 2 minutes
after power ON.
YES
NO
NO
Is the outdoor
unit control green LED
flashing?
YES
Is the indoor
unit green LED flashing?
Is the outdoor unit
control red LED flashing
twice?
Are wires
connected properly between indoor/
outdoor units?
YES
YES
YES
YES
YES
NO
Is approx.
DC20V detected between
�
-
�
on
the outdoor unit terminal
block?
Is approx.
DC20V detected between
�
-
�
on
the indoor unit terminal
block?
WA IT
To next page
Defective indoor control
PCB
➞
Replace.
Defective indoor control PCB
➞
Replace.
Defective remote controller
➞
Replace.
Broken remote controller wire Y
➞
Replace.
Correct connection wires
between indoor and
outdoor units.
Defective outdoor control
PCB
➞
Replace.
Defective connection wire
(Broken)
Noise
Defective indoor control or
power PCB
➞
Replace.
2. Error detection method
3. Condition of Error displayed
4. Presumable cause
• Faulty indoor control or
power PCB
• Defective remote controller
• Broken remote controller wire
• Faulty outdoor control PCB
• Broken connection wires
Note:
Error code
Remote controller:
LED Green Red
Indoor
Outdoor
Content
-
370
-