Fujitsu ASTG30KMTC Service Manual page 71

2-20. E: 64. Active filter voltage error (Outdoor unit)
Indoor unit
Indicator
outdoor unit
Detective actuator Outdoor unit
Forecast of cause
Check point 1. 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.
Check point 2. Check connection of Connector
• Check if connector is removed.
• Check erroneous connection.
• Check if cable is open.
Check point 3. Check active filter module
Check active filter module. (Refer to active filter module in
75.)
→ If active filter module is abnormal, replace it
Check point 4. Replace main PCB
If check point 1 to 3 do not improve the symptom, change main PCB.
2-20. E: 64. Active filter voltage error (Outdoor unit)
Operation indicator
Timer indicator
Economy indicator
Error code
Main PCB
Air filter module
↓
↓
↓
↓
End
Continuous flash
Refer to "Error code table (Outdoor unit: for 34 model
only)" on page 1
• When inverter input DC voltage is higher than 430
V or lower than 110 V
• When a momentary power cut off occurred on low
voltage
External cause
Connector connection failure
Main PCB failure
Active filter module failure
Upon correcting the removed connector or mis-
wiring, reset the power.
"Service parts information"
- (03-33) -
6 time flash
4 time flash
E: 64
on page 03-
2. Troubleshooting with error code