Toshiba RAS-B10SKVP-E Service Manual page 71

Miswiring (mispiping) check by LED Indication
• For this outdoor unit, the self-miswiring (mispiping) check is possible by using five LEDs (1 Yellow + 4 Red).
* LEDs (D800 to D804) locate on the sub-control board underneath of the inverter.
LED D800 D801 D802 D803 D804
l l
¥ ¥
¥ l
During check
¥ l
¥
¤
¥ l
¥ l
Result of
¥
¤
judgement
¥
¤
¥ l
¥
¤
Useful Functions
• For this outdoor unit, the self-diagnosis is possible by using five LEDs (1 Yellow + 4 Red).
* LEDs (D800 to D804) are provided on P.C. board of the inverter.
LED indication
D800 D801 D802 D803 D804
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l l l
¤
l l
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l l l
¤
l
¤ ¤ ¤
*1
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*1
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l
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¤ ¤ ¤ ¤
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l
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l l l
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l l
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l l
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l
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l l l
Normal operation (no error)
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Checking A unit
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Checking B unit
l ¥ l
Checking C unit
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Crush/Clog of Pipe A
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Crush/Clog of Pipe B
l l
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Crush/Clog of Pipe C
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Miswiring/Mispiping or Crush/Clog of Pipe A, B
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Miswiring/Mispiping or Crush/Clog of Pipe A, C
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Miswiring/Mispiping or Crush/Clog of Pipe B, C
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A, B, C Miswiring/Mispiping
Indoor
alarm code
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None Normal running
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14 IGBT short circuit, Compressor motor rare short
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16 Trouble on position detecting circuit
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17 Trouble on current detecting circuit
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18 Outdoor heat exchanger temp. sensor (TE) fault
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18 Suction temp. sensor (TS) fault
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19 Discharge temp. sensor (TD) fault
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1A Trouble on outdoor fan motor
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1B Outdoor temp. sensor (TO) fault
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1C Trouble on compressor system
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1C Temp. sensor (TGa) fault at A room gas side
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1C Temp. sensor (TGb) fault at B room gas side
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1C Temp. sensor (TGc) fault at C room gas side
Gas leakage, TS sensor out of place, PMV,
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1C
sensor fault
TE sensor out of place, indoor heat exchanger
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1C
sensor (TC) out of place, PMV, sensor fault
Miswiring at indoor or outdoor, Gas leakage,
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1C
TS, TC sensor out of place, PMV, sensor fault
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1C Communication trouble between MCU
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1D Compressor lock
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1E Trouble on discharge temp, Gas leakage
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1F Compressor break down
Description
Self-Diagnosis by LED Indication
Contents
– 71 –
D800D801D802D803D804
Yellow Red
Miswiring (mis-piping)
check connector (color: Red)
Fig. 10-4-16
LED : Light Emitting Diode
¤
: LED ON
l
: LED OFF
¥
: LED FLASH
1. If a trouble occurs, LED goes on
according to the contents of
trouble as shown in the left table.
2. When two or more troubles
occur, LEDs go on cyclically
(alternately).
3. Usually, LEDs (Red) go off.
D800D801D802D803D804
Red
Yellow
Fig. 10-4-17
IGBT : Insulated Gate Bipolar Transistor
PMV : Pulse Motor Valve
LED : Light Emitting Diode
¤
: LED ON
l
: LED OFF
*1 : Heat pump model only
LED
LED