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
1. Check sensors TD.
exceeded 117
o
C.
error is detected
2. Check refrigerant amount.
4 times*.
3. 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
1. Check installation conditions such as
though operation Hz is
error is detected
packed valve opening, refrigerant
decreased to minimum limit.
8
times*.
amount and power supply (rate +10%,
Installation problem.
both of operation and non operation
Instantaneous power
condition).
failure.
2. Check P.M.V. by measure the
Refrigeration cycle
resistance of the coil and confirm its
problem.
operation (sound of initial
Compressor break down.
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.)
*
4
, 8
, 11
or
1
8
times ; When first error is detected, error is count as 1 time, then once operation is stop and re-started.
After re-starting operation within
6
minutes, if same error is detected, error count is add (count become 2 times)
When error count comes 4
, 8
, 11
or 1
8
times, record error to check code. But after re-starting operation, if no
error is
detected and air conditioner can operate more than
6
minutes, error count is cleared.
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