Toshiba RAS-M10GKCVP-E Service Manual page 63

10-8. Useful Functions
10-8-1. Self-Diagnosis by LED Indication
• For this outdoor unit, by referring to the 5 LED (1 Yelow + 4 Red) indicator lights, self-diagnosis is possible.
• LEDS (D800 to D804) are located on the sub-control board underneath the inverter.
Contents
Normal running
IGBT short circuit, Compressor motor rear short
Trouble on position detecting circuit
Trouble on current detecting circuit
Discharge pipe temp. sensor (TD) fault
Trouble on outdoor fan
Outdoor temp. sensor (TO) fault
Trouble on compressor system
Gas side pipe temp. sensor a (TGa) fault
Gas side pipe temp. sensor b (TGb) fault
Gas side pipe temp. sensor b (TGc) fault
Gas leakage, P .M.V. fault, Sensor fault
Indoor evaporator pipe sensor (TC) out of place,
P .M.V. fault, Sensor fault
Indoor or outdoor miawiring, Gas leakage,
TC sensor out of place, P .M.V. fault, Sensor fault
Communication trouble between M.C.U.
Compressor lock
Trouble on discharge temp. Gas leakage
Compressor break down
• These LEDs do not normally light.
1. If trouble occurs, LED goes on according to the
contents of trouble as shown in the table above.
2. When two or more troubles occur, LEDs go on
cyclically (alternately).
3. When the trouble is eliminated, LEDs (Red) go off.
Indoor alarm code
D800
None
14
16
17
19
1A
1B
1C
1C
1C
1C
1C
1C
1C
1C
1D
1E
1F
D800D801D802D803D804
Yellow
– 63 –
LED indication
D801 D802 D803
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: LED ON,
LED
Red
Fig. 10-8-1
D804
l
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: LED OFF