Block distinction Operation of diagnosis function
Check
code
Block
Check
code
Cause of operation
Air
conditioner
status
Display
flashing error
Compressor does not rotate. All OFF Flashes after 1. Remove connecting lead wire of the
Because of missed wiring, error is detected compressor, and operate again.
missed phase or shortage. 8 times*. 2. If outdoor fan does not operate or
operation but stop after some period,
replace the inverter P.C. board.
3. If outdoor fan operates normally,
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, measure
resistance of compressor winding.
6. If winding is shortage, replace the
compressor.
Discharge temperature All OFF Flashes after
exceeded 117
o
C.
error is detected
4 times*.
1. Check sensors TD.
2. Check refrigerant amount.
3. (In case of P.M.V. exists)
Check P.M.V. by measure the
resistance of the coil and confirm its
operation (sound of initial operation, etc.)
4. Observe any possibility cause which
may affect high temperature of
compressor.
Compressor is high current All OFF Flashes after
though operation Hz is error is detected
decreased to minimum limit. 8 times*.
Installation problem.
Instantaneous power
failure.
Refrigeration cycle
problem.
Compressor break down.
1. Check installation conditions such as
packed valve opening, refrigerant
amount and power supply (rate +10%,
both of operation and non operation
condition).
2. (In case of P.M.V. exists)
Check P.M.V. by measure the
resistance of the coil and confirm its
operation (sound of initial operation, etc.)
3. Observe any possibility cause which
may affect high current of compressor.
4. If 1, 2 and 3 are normal, replace
compressor.
Action and Judgment
Compressor failure (High
current).operation, etc.)
The others
(including
compressor)
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