Toshiba RAV-SP1404AT8ZG-TR, RAV-SP1104AT8ZG-TR, RAV-SP1604AT8-E Troubleshooting, 114, EN-26, 27-EN

Super Digital Inverter

14 TROUBLESHOOTING

You can perform fault diagnosis of the outdoor unit with the LEDs on the P.C. board of the outdoor unit in addition to using the check codes displayed on the wired remote controller of the indoor unit.

Use the LEDs and check codes for various checks. Details of the check codes displayed on the wired remote controller of the indoor unit are described in the Installation Manual of the indoor unit.

Verifying current abnormal status

1.Check that DIP switch SW803 is set to OFF.

2.Jot down the states of LED800 to LED804. (Display mode 1)

3.Press SW800 for at least 1 second. The LED status changes to display mode 2.

4.Check the code whose display mode 1 equals the LED states jotted down and display mode 2 equals the current flashing status of LED800 to LED804 from the following table to identify the cause.

Verifying an abnormal state in the past although the abnormal state no longer occurs

1.Set bit 1 of DIP switch SW803 to ON.

2.Jot down the states of LED800 to LED804. (Display mode 1)

3.Press SW800 for at least 1 second. The LED status changes to display mode 2.

4.Find an error whose display mode 1 equals the LED states jotted down and display mode 2 equals the current flashing states of LED800 to LED804 from the following table to identify the error.

• An outside air temperature (TO) sensor error can be checked only while it occurs.

– 114 –

Super Digital Inverter

No. Cause Display mode 1 Display mode 2

D800 D801 D802 D803 D804 D800 D801 D802 D803 D804

1 Normal

2 Discharge (TD) sensor error

3 Heat exchanger (TE) sensor error

4 Heat exchanger (TL) sensor error

5 Outside air temperature (TO) sensor error

6 Suction (TS) sensor error

7 Heat sink (TH) sensor error

8 Outdoor temperature sensor (TE/TS) connection error

9 Outdoor EEPROM error

10 Compressor breakdown

11 Compressor lock

12 Current detection circuit error

13 Thermostat for compressor activated

14 Model data not set (on the service P.C. board)

15 MCU-MCU communication error

16 Discharge temperature error

17 Abnormal power (open phase detected or abnormal voltage)

18 Heat sink overheat

19 Gas leak detected

20 4-way valve reverse error

21 High pressure release operation

22 Outdoor fan motor error

23 Compressor driver short-circuit protection

24 Position detection circuit error in one-line display

25 High pressure SW error

(: OFF : ON : Flashing)

* The LEDs and DIP switches are

located on the lower left of the P.C.	ON				ON
board of the outdoor unit.
	1	2	3	4	1	2	3	4

SW804

ON

1 2 3 4

SW802

SW805

ON

1 2 3 4

SW803 SW800 SW801 SW806

LED

D805

D804

D803

D802

D801

D800

Enlarged view of

LEDs

D805

D804

D803

D802

D801

D800

EN-26 26 27 27-EN