Block distinction Operation of diagnosis function
Check
code
Block
Check
code
Cause of operation
Air
conditioner
status
Display flashing
error
Compressor drive output error. All OFF Flashes after
(Relation of voltage, current error is detected
and frequency is abnormal) 8 times*.
Overloading operation of
compressor caused by
over-charge refrigerant,
P.M.V. failure, etc.
Compressor failure (High
current).
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 operation load of
compressor.
4. Operate again. If compressor operation
is failure when 20 seconds passed
(count time from operation starting of
compressor), replace compressor.
* 4 or 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 18 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.
The others Return signal of the outdoor Indoor unit Flashes when
(including unit has been sent when operates error is detected.
compressor) operation start. But after continue. Flashing stop
that, signal is stop some time. Outdoor unit and outdoor unit
Instantaneous power stop. start to operate
failure. when the return
Some protector signal from the
(hardware) of the outdoor unit is
outdoor unit open normal.
circuit of signal.
Signal circuit of indoor
P.C. board or outdoor
P.C. board is failure
in some period.
1. Check power supply (Rate + 10%)
2. If the air conditioner repeat operates and
stop with interval of approx. 10 to 40
minutes.
(In case of these exist)
Check protector (hardware) such as
Hi-Pressure switch, Thermal-Relay, etc.
Check refrigerant amount, packed valve
opening and any possibility cause which
may affect high temperature or high
pressure.
3. Check operation signal of the indoor unit
by using diode. Measure voltage at
terminal block of the indoor unit
between No.2 and No.3 (or L2 and S) If
signal is varied 15-60V continuously,
replace inverter P.C. board.
If signal is not varied, replace indoor
P.C. board.
Action and Judgment
Outdoor P.C.
board
To Next Page
Loading...
