Toshiba RAS-3M26U2AVG-E Service Manual page 74

11-6. Trouble Diagnosis by Outdoor LED
For the outdoor unit, the self-diagnosis is possible by LED (Green) and five LEDs (Yellow).
Green LED (D805) and Yellow LEDs (D800 to D804) are provided on the display P.C. board WP-041.
1. In the initial LED display status, Green LED(D805) is lighted as below.
Normal
D800 D801
(Yellow) (Yellow) (Yellow)
● ●
2. If there is an error, Yellow LED are lighted according to the error as described in the below table.
3. When there are two or more errors, LEDs flash cyclically.
4. When D804 or D805 are flashing (rapid or slow), push and hold SW801 and SW802 simultaneously
for 5 seconds or more. (Display returns to the error display.)
Display
D800 D801 D802 D803 D804 D805 check code
(YL) (YL) (YL)
● ● ●
○* ● ●
● ○* ●
○* ○* ●
● ● ○*
○* ● ○*
● ○* ○*
○* ○* ○*
● ● ●
○* ● ●
● ○* ●
○* ○* ●
● ● ○*
*1 ○* ● ○*
● ○* ○*
○* ○* ○*
*2 ● ● ●
*2 ○* ● ●
*2 ● ○* ●
○* ● ○*
● ○* ○*
● ● ●
○* ● ●
● ○* ●
○* ● ○*
● ○* ○*
○* ○*
○*
∗1: Back-up operation is performed without error display of the indoor unit.
∗2: Operated normally when the air conditioners in other rooms are driven.
• The D800 LED represents unit A.
• The D801 LED represents unit B.
• The D802 LED represents unit C.
D802 D803 D804
(Yellow) (Yellow)
● ● ●
○:ON ●:OFF
(YL) (YL) (GN)
● ●
● ●
● ●
● ●
● ●
● ●
● ●
● ●
○* ●
○* ●
○* ●
○* ●
○
○* ●
○* ●
○* ●
○* ●
● ○*
● ○*
● ○*
● ○*
● ○*
○* ○*
○* ○*
○* ○*
○* ○*
○*
○*
○* ○*
Error occurring
D805
D800 D801
(Green)
(Yellow) (Yellow)
○
●/○* ●/○*
○:ON (○*:3 sec ON/0.5 sec OFF)●:OFF
◎:Rapid Flashing(5 times/sec) ◇:Slow Flashing(1 time /sec)
Indoor
- Normal operation (no error)
1C Compressor case thermostat error
21 High pressure switch error
1C Compressor system error
1D Compressor lock
1F Compressor breakdown
14 Driving element short circuit
16 Position detection circuit error
17 Current detection circuit error
1C Communication error between MCU
1A Fan system error
1E Discharge temperature error
19 Discharge temperature sensor (TD) error
1B Outdoor air temperature sensor (TO) error
18 Suction temperature sensor (TS) error
18 Heat exchanger temperature sensor (TE) error
1C Gas pipe (unit A) temperature sensor (TGa) error
1C Gas pipe (unit B) temperature sensor (TGb) error
1C Gas pipe (unit C) temperature sensor (TGc) error
- PMV error (SH≥20)
- PMV error (SH≤–8)
20 PMV leakage error (unit A)
20 PMV leakage error (unit B)
20 PMV leakage error (unit C)
- Miswiring (mispiping) check error
1C Communication error between MCU
1C Communication error between MCU
- 74 -
FILE NO. SVM-18051
D802 D803 D804
(Yellow) (Yellow) (Yellow)
●/○* ●/○* ●/○*
○:ON ○*:3 sec ON/0.5 sec OFF ●:OFF
Description
D805
(Green)
○