User`s manual

English 6
3. OPERATION PROCEDURE
3-1 COOLING, HEATING, AND FAN ONLY OPERA-
TION (Refer to figure 5)
[PREPARATIONS]
• To protect the unit, turn on the main power switch 6 hours
before operation.
Do not turn off the power during the heating or cooling sea-
son. This is to ensure smooth start-up.
Press the operation mode selector button several times
and select the operation mode of your choice;
“” Cooling operation
“” Heating operation
“” Fan only operation
NOTE
•“ ” can only be set for systems operating in cooling and
heating at the same time.
“” is displayed on all remote controllers when
using the VRVΙΙ system cooling only type, but only “” and
“” can be set.
• Select the operating mode on a remote controller on which
“” is not displayed.
“” “” and “” (only for simultaneous cooling/heat-
ing systems) cannot be selected on remote controllers on
which it is displayed.
See 3-2 if “” is displayed.
Press ventilation fan mode button if you wish to change
the fan mode.
The display rotates through the following selections
every time the button is pressed.
Press ventilation fan speed button if you wish to change
the fan speed.
The display rotates through the following selections
every time the button is pressed.
After the selection, the ventilation fan speed display dis-
appears.
And the fan speed of the combined air conditioner requ-
lary displays.
Press the on/off button.
The operation lamp lights up and the system starts oper-
ation.
Stopping the system
Press start/stop one more time. The operation lamp will go off.
The unit will stop.
• After stopping operation, the fan may continue operating for
up to a minute.
• The fan may stop, but this is not a malfunction.
NOTE
• Do not turn off the power immediately after operation stops.
Wait at least 5 minutes.
Not waiting may cause leaking or malfunction.
!
!!
!
EXPLANATION OF OPERATION MODE
NOTE
• This unit cannot control room temperature. If this is needed,
do not install the HRV unit alone, but rather install another
indoor unit.
!
!!
!
EXPLANATION OF VENTILATION MODE
Automatic mode : When combined with a VRVΙΙ-system
air conditioner
The unit automatically switches
between “” and “” based on
information from the VRVΙΙ system air
conditioner (heating, cooling, fan, and
set temperature) and information from
the HRV unit (indoor and outdoor tem-
peratures).
The unit automatically switches between
“” and “” when it is combined
with an air conditioner (Not producted
by Daikin) and based on only the infor-
mation from the HRV unit (indoor and
outdoor temperatures) when the HRV
unit is operating alone.
Total heat exchange mode : Outdoor air passes through
the heat exchange element
and heat exchanged air is
sent into the room.
Bypass mode : In this mode outdoor air does not through
the heat exchange element, but rather
sent into the room as is.
!
!!
!
EXPLANATION OF HEATING OPERATION
Defrost operation
• In heating operation, freezing of the outdoor unit coil increases.
Heating capabitity decreases and the system goes into defrost
operation.
• The remote controller will read “” until the hot air
starts blowing.
• It returns to the heating operation again after 6 to 8 minutes
(10 at the longest).
Hot start
• The remote controller will read “” until the hot air
starts blowing, e.g. at the start of heating operation.
1
2
Automatic mode Heat exchange mode Bypass mode
3
Low
High
LH
4
Cooling mode Heating mode
Automatic mode
It automatically
selects “” or
“ .”
Fan mode
It only operates in
ventilation mode.
The unit pro-
cesses outside air
using the heat
exchanger ele-
ment, but not the
DX expantion coil.
While operating in ventilation mode, the
unit adjusts the outside air to the indoor
temperature and then brings it into the
room.
3P130767-1_En.fm Page 6 Wednesday, December 17, 2003 7:39 PM