350
FTX-N/U, FVXS-N, FDMQ-R Series EDUS091558E
3P510048-1A
9
Group control system
1 remote controller controls up to 16 indoor units.
All indoor units are equally set.
2 remote controllers control system
2 remote controllers control 1 indoor unit.
(In case of group control system, 1 group of indoor units)
The unit follows individual operation.
NOTE
• Cannot have 2 remote controllers control system with only wire-
less remote controllers. (It will be a 2 remote controllers control
system having 1 wired and 1 wireless remote controllers.)
• Under 2 remote controllers control system, wireless remote
controller cannot control timer operation.
• Only the operating indicator lamp out of 3 other lamps on the
indoor unit display functions.
• Contact your dealer in case of changing the combination or set-
ting of group control and 2 remote controllers control systems.
The following symptoms do not indicate air condi-
tioner malfunction.
THE SYSTEM DOES NOT OPERATE
• The system does not restart immediately after the ON/
OFF button is pressed.
If the OPERATING INDICATOR lamp lights, the system is in
normal condition. It does not restart immediately because a
safety device operates to prevent overload of the system.
After 3 minutes, the system will turn on again automatically.
• The system does not restart immediately when TEM-
PERATURE SETTING button is returned to the former
position after pushing the button.
It does not restart immediately because a safety device oper-
ates to prevent overload of the system. After 3 minutes, the
system will turn on again automatically.
• If the reception beep is rapidly repeated 3 times.
(It sounds only 2 times when operating normally.)
Control is set to the optional controller for centralized control.
• If the DEFROST lamp on the indoor unit’s display is lit
when heating is started.
This indication is to warn against cold air being blown from
the unit. There is nothing wrong with the equipment.
The unit stops operation from time to time.
• With “U4” “U5” displayed on the remote controller, the
unit stops, but it resumes operation in a few minutes.
Since electric noises produced from other equipment than
the air conditioner interrupt communication between the
units, the unit stops operation.
If these electric noises subside, operation is restarted auto-
matically.
COOLING / HEATING changeover is impossible.
• If the indoor unit emits a receiving sound “1 long beep”.
It is because the indoor unit under the control of operation
changeover is set to the mode that cannot be selected.
Display Indicates only a part.
• Even if the unit is in operation, the display shows only
operational indication. Even if the indication is shown, the
indication other than operation disappears after a while.
It is because the remote controller is set to multi-system.
Display disappears or shows all indication.
• It happens when the button of the remote controller is
pressed.
It is because the battery is dead.
No favorable cooling is achieved.
• The unit is in DRY OPERATION.
DRY OPERATION is carried out to perform operation such that
the room temperature is not decreased as much as possible.
EMERGENCY STOP
When the air conditioner stops in emergency, the run lamp on
the indoor unit starts blinking. Take the following steps yourself
to read the malfunction code that appears on the display. Con-
tact your dealer with this code. It will help pinpoint the cause of
the trouble, speeding up the repair.
Press the INSPECTION/TEST OPERATION button to
select the inspection mode “ ”.
“
” appears on display and blinks. “UNIT No.” lights up.
Press PROGRAMMING TIMER button and change the
unit number.
Press to change the unit number until the indoor unit beeps and
perform the following operation according to the number of beeps.
Number of beeps
3 short beeps........... Perform all steps from to .
1 short beep............. Perform and steps.
1 long beep .............. Normal state
5. NOT MALFUNCTION OF THE AIR
CONDITIONER
6. HOW TO DIAGNOSE TROUBLE SPOTS
UNIT N
O
.
CODE
MODE
TIMER
RESERVE
CANCEL
DOWN
UP
/TEST
FAN
TIME
TEMP
1
24
6
35
7
ON OFF
24
6
TEST
1
DOWN
UP
2
3 6
3 6
01_EN_3P510048-1A.fm Page 9 Wednesday, December 27, 2017 2:27 AM
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