Fujitsu ABHG18KRTA, Service Manual

Page: 257 / 471

2-25. E: 64. Active filter voltage error (Outdoor unit)
Indicator Indoor unit
Operation indicator 6 time flash
Timer indicator 4 time flash
Economy indicator Continuous flash
Error code E: 64
Detective actuator Outdoor unit
Main PCB • When inverter input DC voltage is higher than 425
V or lower than 80 V.
• When a momentary power cut off occurred on low
voltage Air filter module
Forecast of cause
External cause
Connector connection failure
Main PCB failure
Active filter module failure
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
Upon correcting the removed connector or mis-
wiring, reset the power.
• 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 "Service parts information" on page 03-
83.)
→ If active filter module is abnormal, replace it
↓
Check point 4. Replace the main PCB
If check point 1 to 3 do not improve the symptom, replace the main PCB.
↓
End
2-25. E: 64. Active filter voltage error (Outdoor unit)
- (03-41) -
2. Troubleshooting with error code
TROUBLESHOOTING TROUBLESHOOTING