Toshiba RAS-2M21U2ACVG-SG Service Manual page 69

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 MCC-1646.
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 SW01 and SW02 simultaneously
for 5 seconds or more. (Display returns to the error 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.
D802 D803 D804
(Yellow) (Yellow)
● ● ●
○:ON ●:OFF
Display Indoor
(YL) (YL) (GN)
● ●
● ● 1C
● ●
● ● 1C
● ● 1d
● ●
● ●
● ●
○* ●
○* ● 1C
○* ● 1A
○* ●
○
○* ●
○* ● 1b
● ○* 1C
● ○* 1C
● ○* 1C
● ○*
● ○*
○* ○*
○* ○*
○* ○*
○* ○*
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)
Description
- Normal operation (no error)
Compressor case thermostat error
21 High pressure switch error
Compressor system error
Compressor lock
1F Compressor breakdown
14 Driving element short circuit
16 Position detection circuit error
17 Current detection circuit error
Communication error between MCU
Fan system error
1E Discharge temperature error
19 Discharge temperature sensor (TD) error
Outdoor air temperature sensor (TO) error
Gas pipe (unit A) temperature sensor (TGa) error
Gas pipe (unit B) temperature sensor (TGb) error
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
- 69 -
D802 D803 D804
(Yellow) (Yellow) (Yellow)
●/○* ●/○* ●/○*
○:ON ○*:3 sec ON/0.5 sec OFF ●:OFF
D805
(Green)
○