Operation manual
4
RXYCQ8~20A7Y1B
VRV Classic System air conditioner
4P327539-1 — 2012.08
Explanation of heating operation
It may take longer to reach the set temperature for general heating
operation than for cooling operation.
The following operation is performed in order to prevent the heating
capacity from dropping or cold air from blowing.
Defrost operation
■
In heating operation, freezing of the outdoor unit coil increases.
Heating capability decreases and the system goes into defrost
operation.
■
The indoor unit fan stops and the remote controller displays
.
■
After maximum 10 minutes of defrost operation, the system
returns to heating operation again.
Hot start
■
In order to prevent cold air from blowing out of an indoor unit at
the start of heating operation, the indoor fan is automatically
stopped. The display of the remote controller shows
.
It may take some time before the fan starts. This is not a
malfunction.
7.2.
Program dry operation
■
The function of this program is to decrease the humidity in your
room with minimal temperature decrease (minimal room
cooling).
■
The micro computer automatically determines temperature and
fan speed (cannot be set by the remote controller).
■
The system does not go into operation if the room temperature
is low (<20°C).
For systems without cool/heat changeover remote control
switch
(See figure 7)
1
Press the operation mode selector button several times and
select
(program dry operation).
2
Press the on/off button.
The operation lamp lights up and the system starts operation.
3
Press the air flow direction adjust button. (Only for Double-flow,
Multi-flow, Corner, Ceiling-suspended and Wall-mounted.) Refer
to
"7.3. Adjusting the air flow direction" on page 4
for details.
Stopping the system
4
Press the on/off button once again.
The operation lamp goes off and the system stops operation.
For systems with cool/heat changeover remote control switch
(See figure 9)
1
Select cooling operation mode with the cool/heat changeover
remote control switch.
2
Press the operation mode selector button several times and
select
(program dry operation).
3
Press the on/off button.
The operation lamp lights up and the system starts operation.
4
Press the air flow direction adjust button. (Only for Double-flow,
Multi-flow, Corner, Ceiling-suspended and Wall-mounted.) Refer
to
"7.3. Adjusting the air flow direction" on page 4
for details.
Stopping the system
5
Press the on/off button once again.
The operation lamp goes off and the system stops operation.
7.3.
Adjusting the air flow direction
Refer to the operation manual of the remote controller.
Movement of the air flow flap
(See figure 3)
For the following conditions, a micro computer controls the air flow
direction which may be different from the display.
The air flow direction can be adjusted in one of the following ways.
■
The air flow flap itself adjusts its position.
■
The air flow direction can be fixed by the user.
■
Automatic "
" and desired position "
".
NOTE
■
The heating capacity drops when the outside
temperature falls. If this happens, use another
heating device together with the unit. (When using
together with appliances that produce open fire,
ventilate the room constantly.)
Do not place appliances that produce open fire in
places exposed to the air flow from the unit or
under the unit.
■
It takes some time to heat up the room from the
time the unit is started since the unit uses a hot-air
circulating system to heat the entire room.
■
If the hot air rises to the ceiling, leaving the area
above the floor cold, we recommend that you use
the circulator (the indoor fan for circulating air).
Contact your dealer for details.
NOTE
Do not turn off power immediately after the unit stops,
but wait for at least 5 minutes.
NOTE
Do not turn off power immediately after the unit stops,
but wait for at least 5 minutes.
A
Double-flow + Multi-flow units
B
Corner units
C
Ceiling-suspended units
D
Wall-mounted units
COOLING
HEATING
• When the room temperature is lower than
the set temperature.
• When starting operation.
• When the room temperature is higher than
the set temperature.
• At defrost operation.
• When operating continuously at horizontal air flow direction.
• When continuous operation with downward air flow is performed at the time of cooling with a
ceiling-suspended or a wall-mounted unit, the microcomputer may control the flow direction,
and then the remote control indication also will change.
NOTE
■
The movable limit of the flap is changeable.
Contact your dealer for details. (Only for Double-
flow, Multi-flow, Corner, Ceiling-suspended and
Wall-mounted.)
■
Avoid operating in the horizontal direction
"
". It may cause dew or dust to settle on the
ceiling.
Summary of Contents for RXYCQ8A7Y1B
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