13
Caution:
Make sure to perform the “7. Test run” and confirm the unit works without
any problems, before starting the following settings.
► How to select the “Refrigerant Leakage Detection” mode
Detection is possible regardless the unit’s operation (ON or OFF).
1
Press button for more than 3 seconds to switch to the maintenance
mode.
[Display ]
MAINTENANCE
► How to start the initial learning
2
Press button and select the [GAS LEAK TEST START] (Fig. 8-)
* The initial learning for the leakage detection is always done once after the new
installation or the data reset.
TEST
CLOCK
8. Initial settings for refrigerant leakage detection function
[Display ]
Remote control button positions
D
A
C
B
Operation mode Compressor information Outdoor unit information Indoor unit information
Confirm
Activate/cancel maintenance mode
GAS LEAK
JUDGE
GAS LEAK
TEST START
Refrigerant leakage
detection judgment
Refrigerant
leakage detection
(initial teaching)
A
Fig. 8-1
Fig. 8-2
[Display ] Waiting for stabilization
Stabilized
After 45 minutes
D
Fig. 8-3
Press
FILTER
( ) button to confirm. (Fig. 8-3)
How to finish the initial learning
Once the unit’s operation is stabilized, the initial learning is completed.
Press
TEST
button for more than three seconds to cancel the initial learning.
The initial learning can also be cancelled by pressing
ON/OFF
button.
* Refer to the Technical Manual for the refrigerant leakage detection judgment method.
This air conditioner (outdoor unit) can detect refrigerant leakage which may happen
during a long period of use. In order to enable the leakage detection, the following
settings are required to let the unit memorize the initial conditions (initial learning).
* Except RP170, 00.
9.1. Low noise mode (on-site modification) (Fig. 9-1)
By performing the following modification, operation noise of the outdoor unit can be
reduced by about 3-4 dB.
The low noise mode will be activated when a commercially available timer or the
contact input of an ON/OFF switch is added to the CNDM connector (option) on the
control board of the outdoor unit.
• The ability varies according to the outdoor temperature and conditions, etc.
1
Complete the circuit as shown when using the external input adapter
(PAC-SC36NA). (Option)
2
SW7-1 (Outdoor unit control board): OFF
3
SW1 ON: Low noise mode
SW1 OFF: Normal operation
A
Circuit diagram example (low noise mode)
B
On-site arrangement
C
External input adapter (PAC-SC36NA)
X: Relay
D
Outdoor unit control board
E
Max. 10 m
F
Power supply for relay
A
Fig. 9-1
A
Circuit diagram example (Demand function)
B
On-site arrangement
X, Y: Relay
C
External input adapter (PAC-SC36NA)
D
Outdoor unit control board
E
Max. 10 m
F
Power supply for relay
• RP170,00
By setting SW7-1 on the control board of the outdoor unit, the energy consump-
tion (compared to the normal consumption) can be limited as shown below.
SW7-1
SW
SW3
Energy consumption
Demand
function
ON
OFF
OFF
100%
ON
OFF
75%
ON
ON
50%
OFF
ON
0% (Stop)
A
Fig. 9-2
9. Special Functions
SW1
Orange
1
3
Brown
Red
CNDM
X
X
SW2
SW3
Orange
1
3
Brown
Red
CNDM
Y
X
X
Y
C
D
C
D
9.2. Demand function (on-site modification) (Fig. 9-2)
By performing the following modification, energy consumption can be reduced to 0
–100% of the normal consumption.
The demand function will be activated when a commercially available timer or the
contact input of an ON/OFF switch is added to the CNDM connector (option) on the
control board of the outdoor unit.
1
Complete the circuit as shown when using the external input adapter
(PAC-SC36NA). (Option)
2
RP71-140
By setting SW7-1 and SW7- on the control board of the outdoor unit, the ener-
gy consumption (compared to the normal consumption) can be limited as shown
below.
SW7-1
SW7-
Energy consumption (SW ON)
OFF
OFF
0% (Stop)
ON
OFF
50%
OFF
ON
75%
SW2
Orange
1
3
Brown
Red
CNDM
Y
Y
A
C
D
RP71–140
RP170, 200
