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11-7. Trouble Diagnosis by Outdoor LED
For the outdoor unit, the self-diagnosis is possible by
five LEDs (Red).
• LEDs (Red) (D11 to D15) are provided on the sub-
control board under surface of the inverter, and as
shown below, they are checked from the wiring port
when removing the wiring cover.
(1) If a trouble occurs, LED (Red) goes on according
to the trouble as described in the table below.
(2) When two or more troubles occur, LEDs go on
cyclically.
(3) Usually, LEDs (Red) go off.
D09 D10 D11 D12 D13
LED (Red)
Contents
Indoor alarm
code
LED indication
D09D10D11D12D13
Normal running None
IGBT short circuit, Compressor motor rear short 14
Trouble on position detecting circuit 16
Trouble on current detecting circuit 17
CONDENSOR PIPE TEMP. SENSOR(TE) fault 18
SUCTION PIPE TEMP. SENSOR(TS) fault 18
DISCHARGE PIPE TEMP. SENSOR(TD) fault 19
Trouble on outdoor fan 1A
OUTDOOR TEMP. SENSOR(TO) fault 1B
Trouble on compressor system 1C
GAS SIDE PIPE TEMP. SENSOR a (TGa) fault 1C
GAS SIDE PIPE TEMP. SENSOR b (TGb) fault 1C
TGa, TGb sensor out of place, PMV fault 1C
Communication trouble between MCU 1C
Compressor lock 1D
Trouble on discharge temp. Gas leakage 1E
Compressor break down 1F
: LED ON, : LED OF
F