Mitsubishi Heavy Industries V Multi FDC71VNX Technical Manual page 194

Error code
Remote control:
WAIT
1. Applicable model
Models SRC40-60
When the remote control
display is extinguished after the
power on.
2. Error detection method
3. Condition of error displayed
4. Presumable cause
• Blown fuse
• Connection between PCB's
• Blown fuse
• Faulty indoor unit control
PCB
• Defective remote control
• Wire breakage on remote
control
• Faulty outdoor unit PCB
Note:
LED Green Red
Keeps flashing Stays OFF
Indoor
5. Troubleshooting
Diagnosis
Remote control display is
extinguished after the power on.
Is the
green LED on the indoor unit
flashing?
YES
Is the
red LED in the outdoor unit flashing
twice?
YES
Are wires
connected properly between the indoor and
the outdoor units?
YES
Is approx.
DC20V detected between -Ž
2/N
on the outdoor unit terminal
block?
YES
Is approx
DC20V detected between  -Ž
on the indoor unit terminal
block?
193
-
Communication error at
Content
initial operation (3/3)
(Models SRC40-60)
NO
Is the
fuse on the indoor unit power
PCB OK?
YES
Is
approx. DC10-11V detected
between wires at the remote control
side after disconnecting the
remote control?
YES
NO
NO
NO
NO
YES
-
'19 • PAC-T-327
Countermeasure
Replace fuse.
NO
NO
Short-circuit on remote
control wire.
Defective remote control.
Defective indoor unit
control PCB ➞ Replace.
Defective remote unit control
Broken remote control
wire X or Y.
Correct wires.
Defective outdoor unit
PCB ➞ Replace.
Defective connection wire.
(Broken wire)
Noise.
Defective indoor unit
control PCB ➞ Replace.