250C7Y1B
Split system air conditioner
4PW34720-1G – 07.2010
Installation manual
17
Setting mode 2
The H1P LED is on.
Setting procedure
1
Push the
button according to the required function
(A~E). The LED indication that matches the required function is
shown below in the field marked
:
2
When the
button is pushed, the current setting is
defined.
3
Push the
button according to the required setting
possibility as shown below in the field marked
.
3.1
Possible settings for function A and B are
(ON) or
(OFF).
3.2
Possible settings for function C, D and E
For function C
(
)
only: the noise of level 3 < level 2 < level
1 (
).
For function D only: automatic low noise at nighttime level 3
< level 2 < level 1 (
).
For function E
(
)
only: the power consumption of level 1
< level 2 < level 3 (
).
4
Push the
button and the setting is defined.
5
When the
button is pushed again, the operation
starts according to the setting.
Refer to the service manual for more details and for other settings.
10. S
ERVICE
MODE
OPERATION
Vacuuming method
At the first installation, this vacuuming is not required. It is required
only for repair purposes.
1
When the unit is at standstill and under the setting mode 2, set
the required function B (refrigerant recovery operation/
vacuuming operation) to
(ON).
-
After this is set, do not reset the setting mode 2 until the
vacuuming is finished.
-
The H1P LED is ON and the remote controller indicates
(test operation) and the operation will be prohibited.
2
Evacuate the system with a vacuum pump.
3
Press the
button and reset the setting mode 2.
Refrigerant recovery operation method
by a refrigerant reclaimer
1
When the unit is at standstill and under the setting mode 2, set
the required function B (refrigerant recovery operation/
vacuuming operation) to
(ON).
-
The indoor unit and the outdoor unit expansion valves will
fully open and some solenoid valves will be turned on.
-
The H1P LED is ON and the remote controller indicates
(test operation) and the operation will be prohibited.
2
Cut off the power supply to the indoor units that have separate
power supply and the outdoor unit with the circuit breaker. After
the power supply to one side is cut off, cut off the power supply
to the other side within 10 minutes. Otherwise, the
communication between the indoor and outdoor unit may
become abnormal and the expansion valves will be completely
closed again.
3
Recover the refrigerant by a refrigerant reclaimer. For details,
see the operation manual delivered with the refrigerant
reclaimer.
11. C
AUTION
FOR
REFRIGERANT
LEAKS
(Points to note in connection with refrigerant leaks.)
Introduction
The installer and system specialist shall secure safety against
leakage according to local regulations or standards. The
following standards may be applicable if local regulations are
not available.
The air conditioning systems, uses R410A as refrigerant. R410A
itself is an entirely safe non-toxic, non-combustible refrigerant.
Nevertheless care must be taken to ensure that air conditioning
facilities are installed in a room which is sufficiently large. This
assures that the maximum concentration level of refrigerant gas is
not exceeded, in the unlikely event of major leak in the system and
this in accordance to the local applicable regulations and standards.
Possible functions
A
additional refrigerant charging operation.
B
refrigerant recovery operation/vacuuming operation.
C
low noise operation level setting (
) ( external).
D
automatic low noise operation setting at nighttime.
E
power consumption limitation setting (
) (external).
H1P
H2P
H3P
H4P
H5P
H6P
H7P
A
w x
x
x
x
x
x
B
w x
x
x
x
x w
C
w x
x
x
x w x
D
w x
x
x
x w w
E
w x
x
x w w w
H1P
H2P
H3P
H4P
H5P
H6P
H7P
w x
x
x
x c x
(1)
(1) This setting = factory setting
w x
x
x
x
x c
H1P
H2P
H3P
H4P
H5P
H6P
H7P
w x
x
x
x
x c
(1)
(1) This setting = factory setting
w x
x
x
x c x
w x
x
x c x
x
BS2 SET
L.N.O.P
DEMAND
BS3 RETURN
BS2 SET
ON
OFF
ON
OFF
L.N.O.P
1
1
DEMAND
3
1
2
3
BS3 RETURN
BS3 RETURN
When a unit is installed in a small room, it is necessary to
take measures so that the leaked refrigerant amount does
not exceed the limit even if it leaks. As for the measures to
prevent the leak from not exceeding the limit, please
consult with your distributor.
If the leaked amount exceeds the limit, it may cause an
oxygen deficiency accident.
ON
BS1 MODE
ON
