Troubleshooting - Toshiba RAV-SP242AT2P-UL Installation Manual

How to check the existing piping settings
You can check whether the existing piping settings are enabled.
1. Check that the LED displays are placed in their initial status. If not, place them in the initial status.
2. Hold down SW01 for at least 5 seconds, and check that D804 flashes slowly. (Fig. 9)
3. Press SW01 four times to set the LED displays (D800 to D805) to the "LED displays for existing piping settings"
shown below. If the setting is enabled, D802 lights and D804 and D805 flash rapidly. (Fig. 10)
4. Hold down SW01 and SW02 simultaneously for at least 5 seconds to return the LED displays to the initial
status.
(Fig. 9)
LED displays indicated when step 3 is taken
D800 D801 D802 D803 D804
: ON, : OFF, : Slow flashing
When restoring the factory defaults
To restore the factory defaults in situations such as when relocating the units, follow the steps below.
1. Check that the LED displays are placed in their initial status. If not, place them in the initial status.
2. Hold down SW01 for at least 5 seconds, and check that D804 flashes slowly. (Fig. 11)
3. Press SW01 14 times to set the LED displays (D800 to D805) to the "LED displays restored to factory defaults"
shown below. (Fig. 12)
(Fig. 11)
LED displays indicated when step 2 is taken
D800 D801 D802 D803 D804
: ON, : OFF, : Slow flashing
4. Hold down SW02 for at least 5 seconds, and check that D804 fl ashes slowly. (Fig. 13)
5. Hold down SW01 and SW02 simultaneously for at least 5 seconds to return the LED displays to the initial status.
(Fig. 13)
LED displays indicated when step 4 is taken
D800 D801 D802 D803 D804
: ON, : OFF, : Slow flashing
31-EN
1131601101 EN FR ES.indb 16 1131601101 EN FR ES.indb 16
(Fig. 10)
LED displays for existing piping settings
D805 D800 D801 D802 D803 D804
: ON, : OFF, : Rapid flashing
(Fig. 12)
LED displays restored to factory defaults
D805 D800 D801 D802 D803 D804
: ON, : OFF, : Rapid flashing
D805
13

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.
LED displays and check codes
■
No. Error
D805
1 Normal
2 Discharge temperature sensor (TD) error
3 Heat exchanger temperature sensor (TE) error
4 Heat exchanger temperature sensor (TL) error
5 Outside air temperature sensor (TO) error
6 Suction temperature sensor (TS) error
7 Heat sink temperature sensor (TH) error
8 Miss-mounting of sensor (TE, TS)
9 EEPROM error
10 Compressor breakdown
11 Compressor lock
D805
12 Current detection circuit error
13 Case thermostat activated
14 Unset model type
15 Communication error between MCUs
16 Discharge temperature sensor error
17 High pressure SW error
18 Power supply voltage error
19 Heatsink overheating error
20 Gas leak detected
21 4-way valve reversal error
22 High pressure protective activated
23 Fan system error
24 Compressor driver device short circuit
25 Position detection circuit error
: ON, : OFF, : Rapid flashing (5 times/sec.)
LED displays Service Switches
D800 D802 D804 SW01 SW02
D801 D803 D805
– 16 –
Display
D800 D801 D802
*
The LEDs and switches are located at
the Sub P.C. board of the outdoor unit
as shown in the fi gure on the left.
LED displays
D800 D801 D802 D803
1115284101
(Yellow) (Yellow) (Yellow) (Yellow) (Yellow) (Green)
D803 D804 D805
EN
TH
D804 D805
ID
32-EN
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