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Installation and operation manual
39
RYYQ+RYMQ+RXYQ8~20T7Y1B
VRV IV System Air Conditioner
4P329765-1 – 2012.09
15.2.2. Mode 2
Mode 2 is used to change the field settings of the system. Consulting
the current field setting value and changing the current field setting
value is possible.
In general, normal operation can be resumed without special
intervention after changing field settings.
Some field settings are used for special operation (e.g., 1 time
operation, recovery/vacuuming setting, manual adding refrigerant
setting, etc.). In such a case, it is required to abort the special
operation before normal operation can restart. It will be indicated in
below explanations.
[1-19]=
shows the 3rd last malfunction code.
When the latest malfunction codes were reset by
accident on an indoor unit user interface, they can be
checked again through this monitoring settings. For the
content or reason behind the malfunction code see
"15.6. Malfunction code list" on page 45
, where most
relevant malfunction codes are explained. Detailed
information about malfunction codes can be consulted
in the service manual of this unit.
[1-29]=
shows the estimated leaked refrigerant amount (kg)
based on the latest leak detection operation. To be able
to use the leak detection operation, see
"15.3. Leak
detection function" on page 42
.
[1-30]=
shows the estimated leaked refrigerant amount (kg)
based on the 2nd last leak detection operation.
[1-31]=
shows the estimated leaked refrigerant amount (kg)
based on the 3rd last leak detection operation.
[1-34]=
shows the remaining days till the next automatic leak
detection (if automatic leak detection function is
activated).
When the automatic leak detection function was
activated through mode 2 settings, it is possible to see
within how many days, the automatic leak detection will
be performed. Depending on the field setting chosen,
the automatic leak detection function can be
programmed one time into the future or on perpetual
basis.
Indication is given in remaining days and is between 0
and 365 days.
[1-35]=
shows the result of the latest automatic leak detection
execution
When the automatic leak detection was activated
through mode 2 settings, it is possible to see what was
the last result of the automatic leak detection operation.
1: normal execution of leak detection operation
occurred.
2: operation conditions during leak detection operation
were not satisfied (ambient temperature was not within
the limitations)
3: malfunction occurred during leak detection operation
In case [1-35]=0, the estimated leaked refrigerant
amount is displayed in [1-29].
For more information see
"15.3. Leak detection
function" on page 42
.
[1-36]=
shows the result of the 2nd last automatic leak detection
operation. Contents explanation see code [1-35] above.
[1-37]=
shows the result of the 3rd last automatic leak detection
operation. Contents explanation see code [1-35] above.
[1-38]=
shows the number of RA DX indoor units connected to
the system.
[1-39]=
shows the number of Hydrobox (HXY(080/125)) indoor
units connected to the system.
[1-40]=
shows the current cooling comfort setting. See
"15.4. Energy saving and optimum operation" on
page 42
for more details about this setting.
[1-41]=
shows the current heating comfort setting. See
"15.4. Energy saving and optimum operation" on
page 42
for more details about this setting.
[2-0]=
Cool/Heat selection setting
Cool/Heat selection setting is used in case the optional
Cool/Heat selector (KRC19-26A and BRP2A81) is
used. Depending on the outdoor unit setup (single
outdoor unit setup or multi outdoor unit setup), the
correct setting should be chosen. More details on how
to use the Cool/Heat selector option can be found in the
manual of the Cool/Heat selector.
Default value=0.
0=Each individual outdoor unit can select
Cool/Heat operation (by Cool/Heat selector if
installed), or by defining master indoor user
interface (see setting [2-83] on
page 41
and
"6.4. Setting the master user interface" on
page 57
)
1=Master unit decides Cool/Heat operation when
outdoor units are connected in multiple system
combination
(a)
2=Slave unit for Cool/Heat operation when outdoor
units are connected in multiple system
combination
(a)
Change [2-0]=0, 1 or 2 in function of required
functionality.
[2-8]=
T
e
target temperature during cooling operation
Default value=0
Change [2-8]=0, 2~7 in function of required operation
method during cooling.
For more information and advice about the impact of
these settings, see
"15.4. Energy saving and optimum
operation" on page 42
.
[2-9]=
T
c
target temperature during heating operation
Default value=0
Value
[2-8]
T
e
target
0
Auto (default)
2
6
3
7
4
8
5
9
6
10
7
11
Value
[2-9]
T
c
target
0
Auto (default)
1
41
3
43
6
46
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