Troubleshooting - Toshiba RAV-SP1104AT-A Installation Manual

Recovering Refrigerant
• Use refrigerant recovery switch SW801 on the P.C.
board of the outdoor unit to recover refrigerant when
the indoor or outdoor unit is moved.
Procedure
1. Turn on the power of the air conditioner.
2. Select the FAN mode for indoor unit operation with
the remote controller.
3. Set SW804 on the P.C. board of the outdoor unit to
all OFF, and then press SW801 for 1 second or
more. The air conditioner enters the forced cooling
mode for up to 10 minutes.
Operate or handle the valve to recover refrigerant
during this time period.
4. Upon completion of refrigerant recovery, close the
valve and press SW801 for at least 1 second to stop
operation.
5. Turn off the power.
Refrigerant
recovery switch
SW801
Optional
connector CN610
Special operation
select switch
SW804
Existing pipe
switch SW802
DANGER
Be careful of electric shock because the P.C. board has
an electrical current running through it.
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P.C. board
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.
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.
No. Cause
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
Outdoor temperature sensor (TE/TS)
8
connection error
9 Outdoor EEPROM error
10 Compressor lock
11 Compressor lock
12 Current detection circuit error
13 Thermostat for compressor activated
Model data not set (on the service P.C.
14
board)
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Display mode 1 Display mode 2
D800 D801 D802 D803 D804 D800 D801 D802 D803 D804
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