Fujitsu AB*A12, Service Manual

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Trouble shooting 38
OUTDOOR UNIT Error Method:
Inverter Error (Only for Main Unit)
Indicate or Display:
Outdoor Unit : LED1 Flash, LED5
2 Times Blink
Indoor Unit : Operation LED
ERROR CODE : E : 32
Detective Actuators:
Outdoor Unit Controller PCB circuit
Inverter PCB
Detective details:
When an error is received from Inverter PCB.
Check Point 3 : Check Heat Sink
Check Point 4 : Check Filter PCB and Inverter PCB
Check Filter PCB or Inverter PCB as they may be defective. (PARTS INFORMATION 4)
Check Point 2 :
Check connection of Inverter PCB
YES
NO
p
Check connection between Inverter PCB and Controller
PCB, and Inverter PCB and Filter PCB. (Make sure if
connector is loose or cable is cut open.)
p
Is there anything obstructing heat radiation from Heat Sink?
p
Check the installation of Heat Sink
(Loose screw, or rattling of Heat Sink)
OK
OK
Forecast of Cause : 1. Connection failure 2. Outside cause 3. Heat Sink failure 4. Filter PCB failure 5. Inverter PCB failure
Check Point 1-1 : Restart Operation
Does LED error indication reappear?
Check Point 1-2 :
Check outside cause (Voltage drop or noise, etc.)
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 supply 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.
06-48
Blink, Timer LED 3Time Blinks,
Swing LED 3Time Blinks,