E: 84. Current Sensor Error (Outdoor Unit) - Fujitsu RSG09KMCDN Service Manual

2-18. E: 84. Current sensor error (Outdoor unit)

Indicator Indoor unit
Detective actuator Outdoor unit
Forecast of cause
Check point 1. Reset power supply and operate
Does error indication show again?
Check point 2. Check connections of outdoor
unit electrical components
• Check if the terminal connection is loose.
• Check if connector is removed.
• Check erroneous connection.
• Check if cable is open.
Check point 3. Replace main PCB
If Check point 1, 2 do not improve the symptom,
change main PCB.
Check point 1-2. Check external cause at Indoor and Outdoor (Voltage drop or Noise)
• Instant drop: Check if there is a large load electric apparatus in the same circuit.
• Momentary power failure: Check if there is a defective contact or leak current in the power sup-
ply circuit.
• Noise: Check if there is any equipment causing harmonic wave near electric line. (Neon bulb or
electric equipment that may cause harmonic wave)
Check the complete insulation of grounding.
2-18. E: 84. Current sensor error (Outdoor unit)
Operation indicator
Timer indicator
Economy indicator
Error code
main PCB
↓
↓
↓
End
↓
End
Continuous flash
When input current sensor has detected 0 A, while
inverter compressor is operating at higher than 56 rps,
after 1 minute upon starting the compressor. (Except
during the defrost operation)
Defective connection of electric components
External cause
Main PCB failure
If no, go to "Check point
Upon correcting the removed connector or mis-
wiring, reset the power.
- (03-22) -
8 time flash
4 time flash
E: 84
1-2".
2. Troubleshooting with error code