Mitsubishi Heavy Industries FDTC50ZHXV Technical Manual page 291

Error code
Remote controller: WAIT
1. Applicable model
Model FDC71 – 250
2. Error detection method
3. Condition of Error displayed
4. Presumable cause
• Blown fuse
• Faulty noise filter
• Misconnection between PCB's
• Blown fuse on single phase
model
• Faulty indoor control PCB
• Defective remote controller
• Broken remote controller wire
• Faulty outdoor control PCB
Note:
LED Green Red
Keeps flashing Stays Off
Indoor
Keeps flashing 2 times flash
Outdoor
5. Troubleshooting
Diagnosis
" " is still displayed on the
WAIT
remote controller LED 2 minutes
after power ON.
YES
Is the outdoor
unit control green LED
flashing?
YES
Is the indoor
unit green LED flashing?
YES
Is the outdoor unit
control red LED flashing
twice?
YES
Are wires
connected properly between indoor/
outdoor units?
YES
Is approx.
DC20V detected between �-� on
the outdoor unit terminal
block?
YES
Is approx.
DC20V detected between �-� on
the indoor unit terminal
block?
YES
281
–
Content
WAIT
(Model 71 - 250)
NO
NO
NO
NO
NO
–
(1/3)
Countermeasure
A See next page.
Defective indoor control
PCB
Defective indoor PCB
Defective remote controller
Broken remote controller
wire Y
Correct connection wires.
Defective outdoor control
PCB
Defective connection wire
(Broken)
NO
Noise
Defective indoor control
PCB