Useful Functions - Toshiba RAS-4M23SAV-E Installation Manual

OutdoorInstallation.book Page 14 Tuesday, February 13, 2007 5:58 PM

7 USEFUL FUNCTIONS

Self-Diagnosis by LED Indication
• For this outdoor unit, by referring to the 5 LED (1 Yellow + 4 Red) indicator lights, self-diagnosis is possible.
• LEDs (D800 to D804) are located on the sub-control board underneath the inverter.
Normal running
IGBT short circuit, Compressor motor rear short
Trouble on position detecting circuit
Trouble on current detecting circuit
OUTDOOR CONDENSOR PIPE TEMPERATURE SENSOR (TE) fault
SUCTION PIPE TEMPERATURE SENSOR (TS) fault
DISCHARGE PIPE TEMPERATURE SENSOR (TD) fault
Trouble on outdoor fan
OUTDOOR TEMPERATURE SENSOR (TO) fault
Trouble on compressor system
GAS SIDE PIPE TEMPERATURE SENSOR a (TGa) fault
GAS SIDE PIPE TEMPERATURE SENSOR b (TGb) fault
GAS SIDE PIPE TEMPERATURE SENSOR c (TGc) fault
GAS SIDE PIPE TEMPERATURE SENSOR d (TGd) fault
Gas leakage, TS sensor out of place, PMV fault, Sensor fault
TE sensor out of place, INDOOR EVAPORATOR PIPE
SENSOR (TC) out of place, PMV fault, Sensor fault
Indoor or outdoor miswiring, Gas leakage, TS/TC sensor out of place, PMV
fault, Sensor fault
Communication trouble between MCU
Compressor lock
Trouble on discharge temperature, Gas leakage
Compressor break down
*1 4 unit Multi model only
*2 Heat pump model only
• 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 go off.
EN
Contents
14
Indoor alarm
code
D800 D801 D802 D803 D804
None
14
16
17
*2 18
*2 18
19
1A
1B
1C
1C
1C
1C
*1 1C
1C
1C
1C
1C
1D
1E
1F
Yellow
LED indication
: LED ON, : LED OFF
Red