Table of Contents
Advertisement
13. OPTIONAL PARTS
13.1. Multi-split type air conditioner
This indoor unit can be connected to a multi-split type outdoor
unit. The multi-split type air conditioner allows multiple indoor
units to be operated in multiple locations. The indoor units may
be operated simultaneously, in accordance with their respective
output.
Simultaneous Use of Multiple Units
● When using a multi-split type air conditioner, the multiple indoor units
can be operated simultaneously, but when 2 or more indoor units of
the same group are operated simultaneously, the heating and cooling
effi ciency will be less than when a single indoor unit is used alone.
Accordingly, when you wish to use more than 1 indoor unit for cooling
at the same time, the use should be concentrated at night and other
times when less output is required. In the same way, when multiple
units are used simultaneously for heating, it is recommended that they
be used in conjunction with other auxiliary space heaters, as required.
● Seasonal and outdoor temperature conditions, the structure of
the rooms and the number of persons present may also result in
diff erences of operating effi ciency. We recommend that you try various
operating patterns in order to confi rm the level of heating and cooling
output provided by your units, and use the units in the way that best
matches your family's lifestyle.
● If you discover that 1 or more units deliver a low level of cooling or
heating during simultaneous operation, we recommend that you stop
the simultaneous operation of the multiple units.
● The operation cannot be done in the following diff erent operating
modes.
If the indoor unit is instructed to do an operating mode that it cannot
perform, [ ] indicator on the indoor unit will fl ash (1 second on, 1 sec-
ond off ), and the unit will go into the standby mode.
Heating mode and Cooling mode (or Dry mode)
Heating mode and Fan mode
● The operation can be done in the following diff erent operating modes.
Cooling mode and Dry mode
Cooling mode and Fan mode
Dry mode and Fan mode
● The operating mode (Heating mode or Cooling (Dry) mode) of the out-
door unit will be determined by the operating mode of the indoor unit
that was operated fi rst. If the indoor unit was started in the Fan mode,
the operating mode of the outdoor unit will not be determined.
For example, if indoor unit (A) was started in the Fan mode and then
indoor unit (B) was then operated in the Heating mode, the indoor unit
(A) would temporarily start operation in the Fan mode, but when the
indoor unit (B) started operating in the Heating mode, [ ] indicator for
the indoor unit (A) would begin to blink (1 second on, 1 second off )
and it would go into standby mode. The indoor unit (B) would continue
to operate in Heating mode.
14. TROUBLESHOOTING
In the following events, immediately stop operation of
the air conditioner, and disconnect all the power supply
by turning off the electrical breaker or disconnecting
the power plug. Then consult your dealer or authorized
service personnel.
As long as the unit is connected to the power supply, it
is not insulated from the power supply even if the unit is
turned off .
• Unit smells of something burning or emits smoke
• Water leaks from the unit
Does not operate at all.
□ Has there been a power outage?
In this case, the unit restarts automatically after the power supply
is resumed. (Refer to page 11.)
□ Has the circuit breaker been turned off ?
⇒ Turn on the circuit breaker.
□ Has a fuse blown out or the circuit breaker been tripped?
⇒ Replace the fuse or reset the circuit breaker.
□ Is the timer operating?
⇒ To check or deactivate the timer setting, refer to page 5.
Poor cooling or heating performance.
□ Is the unit operating under the conditions except the permissible
temperature range?
In this case, the air conditioner may stop because of the automatic
protection circuit working.
□ Is the air fi lter dirty?
⇒ Clean the air fi lter. (Refer to page 10.)
□ Is the intake grille or outlet port of indoor unit blocked?
⇒ Remove the obstructions.
□ Is the room temperature adjusted appropriately?
⇒ To change the temperature setting, refer to page 5.
□ Is a window or door left opened?
⇒ Close the window or the door.
□ Is the fan speed set to Quiet?
⇒ To change the fan speed, refer to page 5.
□ <In the Cooling mode> Is direct or strong sunlight shining into the
room?
⇒ Close the curtains.
□ <In the Cooling mode> Are there other heating apparatus or com-
puters operating, or too many people in the room?
⇒ Turn the heating apparatus or computers off , or set the tem-
perature lower. (Refer to page 5.)
Humidity does not drop during the Dry operation.
□ You cannot set the target humidity in the Dry mode. If you feel
high humidity, set the temperature lower.
Airfl ow is weak or stops.
□ Is the fan speed set to Quiet?
⇒ To change the fan speed, refer to page 5.
□ <In the Heating mode> Have you just started the operation?
In this case, the fan rotates at very low speed temporarily to warm
up the internal parts of the unit.
□ <In the Heating mode> Is the room temperature higher than the
set temperature?
In this case, the outdoor unit stops and the indoor unit fan rotates
at very low speed.
□ <In the Heating mode> Is [ ] indicator blinking?
In this case, the Automatic defrosting operation is working. The
indoor unit stops for maximum of 15 minutes. (Refer to page 11.)
□ <In the Dry mode> The indoor unit operates at low fan speed to
adjust the room humidity, and may stop from time to time.
□ <In the Auto mode> While the monitoring operation, the fan
rotates at very low speed.
En-12
WARNING
Advertisement
Table of Contents
