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Refrigerant recovery
WARNING
Don't admit air into refrigerant during recovery.
Otherwise, the pressure in the freezing cycle might increase abnormally. Serious injury could occur if it bursts.
[Recovering the refrigerant]
You need to recover the refrigerant when moving or repairing the indoor and/or outdoor units. You cannot do
this while the air conditioner is running in cooling mode because a protective device will be tripped. Be sure to
recover the refrigerant in test run mode.
Use a refrigerant recovery device when the amount of refrigerant to be recovered exceeds the initial amount of
2.4 kg.
Instructions (Recovery to the Air Conditioner)
1. Power on the air conditioner.
2. To set the air conditioner to test run mode, hold down the Temporary button for more than 10 seconds.
Then, you will hear a "Pi" sound, and the light (green), light (green) and light (orange) lamps will blink quickly to
indicate that the air conditioner has gone into a test run mode.
3. Wait for one minute to elapse, and then close the valve of liquid side.
4. It is recommended to attach a pressure gauge at the service port so that you can determine when refrigerant
recovery has been completed.
5. Upon completion, close the valve of gas side.
6. Stop the air conditioner.
7. Power off the air conditioner.
Complete Steps 2 to 6
unit to stop.
If the recovery operation has been interrupted by the protective device, turn off the air conditioner. In this
case, use a refrigerant recovery device.
27-EN
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
1
Normal
2
Discharge temperature sensor (TD) error
3
Heat exchanger temperature sensor (TE) error
4
Heat exchanger temperature senser (TL) error
5
Outside air temperature sensor (TO) error
6
Suction temperature sensor (TS) error
7
Heat sink temperature sensor (TH) error
8
Mis-mounting of temperature sensor (TE, TS)
9
EEPROM error
10
Compressor breakdown
11
Compressor lock
12
Current detection circuit error
13
Thermostat for compressor activated
14
Model data not set
15
MCU-MCU commumication error
16
Discharge temperature error
17
High pressure SW error
18
Power supply voltage error
19
Heat sink overheating error
20
Gas leak detected
21
4-way valve reverse error
22
High pressure protective operation
23
DC outdoor Fan motor error (Upper side)
24
DC outdoor Fan motor error (Lower side)
25
Compressor drive device shot circuit
26
Position detection circuit error
27
28
Power supply error
: ON,
: OFF,
* The LEDs are located at the top right of the
P.C.
below.
– 14 –
Display
D800
D801
D802
D803
D804
Electric parts cover
Push on arrow
head and slide.
Inspection window through which to
check the LED displays
D805
EN
28-EN
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