Trouble Diagnosis By Outdoor Led - Toshiba RAS-5M34S3AV-E Service Manual

11-6. Trouble Diagnosis by Outdoor LED

For the outdoor unit, the self-diagnosis is possible by LED (Green) and five LEDs (Red).
∗ LED (Green)(D800) and LEDs (Red)(D801 to D805) are provided on the control P.C. board MCC-5071.
1. If there is an error, LED (Red or Green) goes on or flashes according to the error as described in the below table.
2. When there are two or more errors, LEDs go on cyclically.
3. Usually, LED (Green)(D800) goes on.
(Legend)
D800 (Green)
D801 (Red)
D802 (Red)
D803 (Red)
D804 (Red)
D805 (Red)
D800 D801 D802
∗1
∗2
∗2
∗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.
: Go off, : Go on,
LED display
D803 D804 D805
: Flash
Indoor
check code
— During normal operation
07 Case thermo. operation, Power supply error
14 Driving element short-circuit
16 Position detection circuit error
17 Current detection circuit error
1C Compressor system error, Compressor lock
19 Discharge temp. sensor (TD) error
1A Fan system error
1B Outside temp. sensor (TO) error
1D Compressor lock
1E Discharge temp. error, gas leakage
1F Compressor break down
18 Suction temp. sensor (TS) error
18 Heat exchanger temp. sensor (TE) error
1C A room gas side temp. sensor (TGa) error
1C B room gas side temp. sensor (TGb) error
1C C room gas side temp. sensor (TGc) error
1C D room gas side temp. sensor (TGd) error
1C E room gas side temp. sensor (TGe) error
1C Gas leak detection, PMV error
1C Communication error between MCU
1C Communication error between MCU
1C Communication error between MCU
20 PMV error for A room
20 PMV error for B room
20 PMV error for C room
20 PMV error for D room
20 PMV error for E room
21 High pressure SW system error
- 80 -
FILE NO. SVM-15036
PMV. : Pulse Motor Valve
Description