Block distinction
Operation of diagnosis function
Check
code
Block
Check
code
Cause of operation
Air
conditioner
status
Display flashing
error
Outdoor P.C.
Current on inverter circuit
All OFF
Flashes after
1. Remove connecting lead wire of the
board
is over limit in short time.
error is detected
compressor, and operate again.
Inverter P.C. board is
8
times*.
2. If outdoor fan does not operate or
failure, IGBT shortage, etc.
operat
e
but stop after some period,
Compressor current is
replace the inverter P.C. board.
higher than limitation,
3. If outdoor fan operates normally,
lock rotor, etc.
measure 3-Phase output of inverter
P.C. board (150-270VAC) at the
connecting lead wire of compressor.
4. If 3-Phase output is abnormal, replace
inverter P.C.Board.
5. If 3-Phase output is normal, replace
compressor. (lock rotor, etc.)
Compressor position-detect
All OFF
Flashes after
1. Remove connecting lead wire of the
circuit error or short-circuit
error is detected
compressor, and operate again.
between winding of
8
times*.
2. If outdoor fan does not operate or
compressor.
operation but stop after some period,
replace the inverter P.C. board.
3. If outdoor fan operates normally,
measure resistance of compressor
winding. If circuit is shortage, replace
the compressor.
Current-detect circuit of
All OFF
Flashes after
Even if trying to operate again, all
inverter P.C. board error.
error is detected
operations stop, replace inverter
4 times*.
P.C. board.
TE sensor ; The heat
All OFF
Flashes after
1. Check sensors TE, TS and connection.
exchanger temperature
error is detected
2. In case of the sensors and its
sensor of the outdoor unit
4 times*.
connection is normal, check the
either TS sensor ; Suction
inverter P.C. board.
pipe temperature sensor,
out of place, disconnection
or shortage.
TD sensor ; Discharge pipe
All OFF
Flashes after
1. Check sensors TD and connection.
temperature sensor is
error is detected
2. In case of the sensor and its
disconnection or shortage.
4 times*.
connection is normal, check the
inverter P.C. board.
Outdoor fan failure or its
All OFF
Flashes after
1. Check the motor, measure winding
drive-circuit on the inverter
error is detected
resistance, shortage or lock rotor.
P.C. board failure.
8
times*.
2. Check the inverter P.C. board.
TO sensor ; The outdoor
Operation
Record error
1. Check sensors TO and connection.
temperature sensor is
continues.
after detected
2. In case of the sensor and its
disconnection or shortage.
4 times*.
connection is normal, check the
But does not
inverter P.C. board.
flash display.
Action and Judgment
FILE NO. SVM-1
5004
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