Installation and operation manual
34
10T7Y1B
VRV-W IV System Air Conditioner
4P347465-1A – 2013.04
7
Internal wiring
Visually check the electrical component box and the inside of the
unit on loose connections for damaged electrical components.
8
Pipe size and pipe insulation
Be sure that correct pipe sizes are installed and that the
insulation work is properly executed.
9
Stop valves
Be sure that the stop valves are open on liquid and suction gas
side and HP/LP gas. (Leave the suction gas valve closed in
case of heat pump system.)
10
Damaged equipment
Check the inside of the unit for damaged components or
squeezed pipes.
11
Refrigerant leak
Check the inside of the unit on refrigerant leakage. If there is a
refrigerant leak, try to repair the leak. If the repair is
unsuccessful, call your local dealer. Do not touch any refrigerant
which has leaked out from refrigerant piping connections. This
may result in frostbite.
12
Oil leak
Check the compressor for oil leakage. If there is an oil leak, try
to repair the leak. If the repairing is unsuccessful, call your local
dealer.
13
Air inlet/outlet
Check that the air inlet and outlet of the unit is not obstructed by
paper sheets, cardboard, or any other material.
14
Additional refrigerant charge
The amount of refrigerant to be added to the unit shall be written
on the included "Added refrigerant" plate and attached to the
rear side of the front cover.
15
Installation date and field setting
Be sure to keep record of the installation date on the sticker on
the rear of the upper front panel according to EN60335-2-40 and
keep record of the contents of the field setting(s).
17.2. Monitoring function and field settings
The operation of the outdoor unit can further be defined by changing
some field settings. Next to making field settings it is also possible to
confirm the current operation parameters of the unit.
Below relevant Monitoring mode, mode 1 and field setting mode
(mode 2) settings are explained in detail. How to access them, how to
change the value of the settings and how to confirm them is
explained in
"15. Making field settings" on page 28
. In that chapter,
an example is given on how to make a setting. It is advised to check
this procedure before accessing, checking and changing below
settings.
Once the default situation of the LED indication is confirmed (see
"15. Making field settings" on page 28
), the monitoring mode, mode 1
and mode 2 can be accessed.
Making settings is done via the master outdoor unit, not through slave
unit(s).
17.2.1
Mode 1 and Monitoring mode
Mode 1 can be used to define some setting parameters. Monitor
mode can monitor the current situation of the outdoor unit / system.
Some field setting contents can be monitored as well.
Below the monitor mode parameters and settings in mode 1 are
explained.
Monitor mode (H1P is blinking)
INFORMATION
The values of the settings which are given below are the
decimal
values.
The unit will indicate the binary translation using LEDs.
Field setting: [A-B]=C
The parameters B and C have to be regarded as binary
when displayed on the unit.
The decimal value is the sum of all corresponding decimal
values of the lit LED(s).
Example:
Decimal value = 0x32 + 1x16 + 0x8 + 1x4 + 0x2 + 1x1 = 21
[M-5]=
shows the total number of connected indoor units
It can be convenient to check if the total number of
indoor units which are installed match the total number
of indoor units which are recognized by the system. In
case there is a mismatch, it is advised to check the
communication wiring path between outdoor and indoor
units (F1/F2 communication line).
[M-6]=
shows the total number of BS boxes connected to the
outdoor unit (only in case of system use as heat
recovery)
[M-8]=
shows the total number of connected outdoor units (in
case of multi outdoor unit system)
It can be convenient to check if the total number of
outdoor units which are installed matches the total
number of outdoor units which are recognized by the
system. In case there is a mismatch, it is advised to
check the communication wiring path between outdoor
and outdoor units (Q1/Q2 communication line).
[M-14]=
shows the latest malfunction code
[M-15]=
shows the 2nd last malfunction code
[M-16]=
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
"18.2. Malfunction code list" on page 41
, where most
relevant malfunction codes are explained. Detailed
information about malfunction codes can be consulted
in the service manual of this unit.
INFORMATION
If a malfunction situation occurs, H2P will be lit.
If demand operation is active, H7P will be lit.
H2P H3P H4P H5P H6P H7P
x x x x x x
32
16
8
4
2
1
H2P H3P H4P H5P H6P H7P
x w x w x w
32
16
8
4
2
1
4P347465-1A.book Page 34 Monday, August 5, 2013 2:26 PM
