Mitsubishi Heavy Industries FDTC40ZHXV Technical Manual page 303

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:
Keeps flashing Stays Off
Keeps flashing 2 times flash
5. Troubleshooting
Diagnosis
282
–
(Model 71 – 250)
–
(2/3)
Countermeasure
Normal (Malfunction by
noise)
See next page.
Replace noise filter.
Check connection of diode
stack and electrolytic
capacitor by refering main
electrical circuit diagram
Replace control PCB.
Defective outdoor control
PCB
Defective outdoor fan
motor
Defective inverter PCB
Defective outdoor control
PCB