Toshiba RAS-M10PKVP-E Service Manual page 107

11-6. Trouble Diagnosis by Outdoor LED
For the outdoor unit, the self-diagnosis is possible by LED (Yel)
and four LEDs (Red).
• LED (Yel) (D800) and LEDs (Red) (D801 to D804) 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 or Yel) 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 or Yel) go off.
LED display
D800 D801
l l
l
¡
¡ ¡
l l
l
¡
l
¡
¡ ¡
l l
l
¡
l
¡
¡ ¡
l l
l
¡
¡ ¡
*2
l
¡
*2
¡ ¡
*2
l l
*2, *3
l
¡
*1
*1
¡ ¡
l l
¡ ¡
*1 : Back-up operation is performed without block display of the indoor unit.
*2 : Operated normally when the air conditioners in other rooms are driven.
*3 : 4 units Multi model only
IGBT : Insulated Gate Bipolar Transistor, P .M.V. : Pulse Motor Valve
check code
D802 D803 D804
l l l
l l l
l l l
l l
¡
l l
¡
l l
¡
l l
¡
l l
¡
l l
¡
l l
¡
l l
¡
l
¡ ¡
l
¡ ¡
l
¡ ¡
l l
¡
l l
¡
l l
¡
l
¡ ¡
l
¡ ¡
l
¡ ¡
l
¡ ¡
Indoor
— During normal operation
14 IGBT short circuit, compressor motor rare short
16 Position-detect circuit error
17 Current-detect circuit error
1C Compressor system error
19 Discharge temp. sensor (TD) error
1A Outdoor fan error
1B Outside temp. sensor (TO) error
1D Compressor lock
1E Discharge temp. sensor error, gas leakage
1F Compressor break down
18 Suction temp. sensor (TS) error
18 Evaporator temp. sensor (TE) error
1C A room gas side temp. sensor (TGa) error
1C B room gas side temp. sensor (TGb) error
1C C room gas side temp. sensor (TGc) error
1C D room gas side temp. sensor (TGd) error
1C Gas leakage, PMV sensor error
1C Indoor heat exchanger sensor (TC) disconnection,
PMV sensor error
1C Indoor/outdoor miswiring, gas leakage, TC sensor
disconnection, PMV sensor error
1C Communication error between MCU
– 107 –
LED
D800 D801 D802 D803 D804
Red
Yellow
Fig. 11-6-1
l
¡
: LED ON,
Description
: LED OFF