Fujitsu ASU30RLE Service Instruction page 63

Trouble shooting 24
OUTDOOR UNIT Error Method:
Current Sensor Error
Detective Actuators:
Outdoor unit main PCB
Forecast of Cause:
1. Defective connection of electric components 2. External cause 3. Filter PCB failure 4. Main PCB failure
Test 1-1 : Reset Power Supply and operate
Does Error indication show again?
YES
Test 2 : Check connections of Outdoor unit electrical
components
Check if
the terminal connection
Check if connector is removed.
Check erroneous connection.
Check if cable is open.
>>Upon correcting the removed connector or
miss-wiring, reset the power.
OK
Test 3 : Replace Filter PCB
If Test 1, 2 do not improve the symptom, change Filter PCB.
OK
Test 4 : Replace Main PCB
If Test 3 do not improve the symptom, change Main PCB.
Indicate of Display:
Indoor Unit :
Operation lamp: 8 times Flash,
Timer lamp
ERROR CODE : [E : 84]
Detective details:
When input Current Sensor has detected 0A, while inverter compressor is
operating at higher than 50Hz. after 1 minute upon starting the compressor
(Except during the defrost operation)
is loose.
Outdoor unit :
POWER
MODE
: 4 times Flash
NO
Test 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
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.
02-27
PUMP LOW
DOWN NOISE
ERROR
(L1) (L2) (L3) (L4)
8 4
2
: Light OFF : Light ON n : n times blinking
c o n a t t c r o e l a k c r u e r t n
p o w r e s u p p y l i c c r u . t i
PEAK
CUT
(L5) (L6)
n i h t e