Mitsubishi Heavy Industries FDT Series Technical Manual page 220

Wiring-out position and wiring connection
Electrical installation work must be performed according to the installation
manual by an electrical installation service provider qualified by a power
provider of the country, and be executed according to the technical
standards and other regulations applicable to electrical installation in the
country.
Be sure to use an exclusive circuit.
Use specified cord, fasten the wiring to the terminal securely, and hold the
cord securely in order not to apply unexpected stress on the terminal.
Do not put both power source line and signal line on the same route. It may
cause miscommunication and malfunction.
Be sure to do D type earth work.
For the details of electrical wiring work, see attached instruction manual for
electrical wiring work.
1. Remove a lid of the electrical box (2 screws).
2. Hold each wiring inside the unit and connect to a terminal block surely.
3. Fix the wiring by clamps.
4. Install the removed parts back to original place.
Power source side
Single split (PAC) series
terminal block
1 2 3
Interconnecting wiring Earth
Earth
Power source side
VRF(KX) series
terminal block
L N
Power cable Earth
Earth
Attaching the air return grille
The air return grille must be attached when electrical cabling work is completed.
1. Fix the chains tied to the air return
grille onto the indoor unit with
screws supplied as accessories (4
pieces).
Fix with screws
Chain
Chain
Chain
Check list after installation
Check the following items after all installation work completed.
Check if
The indoor and outdoor units are fixed securely? Falling, vibration, noise
Inspection for leakage is done?
Insulation work is properly done?
Water is drained properly?
Supply voltage is same as mentioned in the model name plate? PCB burnt out, not working at all
There is mis-wiring or mis-connection of piping? PCB burnt out, not working at all
Earth wiring is connected properly?
Cable size comply with specified size?
Any obstacle blocks airflow on air inlet and outlet? Insufficient capacity
Signal side
Wireless
terminal block
receiver line
Remote controller line
X Y
Signal cable for
remote controller
Wiring between indoor
Wiring clamp
and outdoor unit
Signal side
Wireless
terminal block
receiver line
Signal line
(shielded cord)
Remote controller
X Y A B
Signal cable for line
remote controller Signal cable
Indoor power
source line
Wiring clamp
2. Close the air return grille.
This completes the unit
installtion work.
Expected trouble Check
Insufficient capacity
Water leakage
Water leakage
Electric shock
PCB burnt out, not working at all
How to set the airflow direction
It is possible to change the movable range of the louver on the air outlet from
the wired remote controller. Once the top and bottom position is set, the louver
will swing within the range between the top and the bottom when swing
operation is chosen. It is also possible to apply different setting to each louver.
Note:This function is not able to be set with wireless
(RCH-H3).
1. Stop the air conditioner and press
LOUVER button simultaneously for three seconds or
more.
The following is displayed if the number of the indoor units
connected to the remote controller is one. Go to step 4.
" "
" "
The following is displayed if the number of the indoor units
connected to the remote controller are more than one.
" "
" "
2. Press or button.(selection of indoor unit) Select the indoor unit of which the louver is set.
[EXAMPLE]
" " " " "
" "
3. Press SET button.(determination of indoor unit) Selected indoor unit is fixed.
[EXAMPLE]
" " (displayed for two seconds)
" "
" "
4. Press or button.(selection of louver No.) Select the louver No. to be set
according to the right figure.
[EXAMPLE]
" " " " "
" "
5. Press SET button.(Determination of louver No.)
The louver No. to be set is confirmed and the display shows the upper
limit of the movable range.
[EXAMPLE] If No.1 louver is selected,
" " current upper limit position
6. Press or button.(selection of upper limit position)
Select the upper limit of louver movable range.
"position 1" is the most horizontal, and "position 6" is the most downward.
"position --" is to return to the factory setting.
If you need to change the setting to the default
setting, use "position --".
" " (the most horizotal)
" "
" "
" "
" "
" " (the most downwards)
" " (return to the default setting)
7. Press SET button.(Fixing of the upper limit position)
The upper limit position is fixed and the setting position is displayed for
two seconds. Then proceed to lower limit position selection display.
[EXAMPLE]
(displayed for two seconds)
(shows current setting)
8. Press or button.(Selection of lower limit position)
Select the lower limit position of louver.
"position 1" is the most horizontal, and "position 6 "is the most downwards.
"position --" is to return to the factory setting. If you need to change
the setting to the default setting, use "position --".
(the most horizontal)
(the most downwards)
(return to the default setting)
9. Press SET button.(Fixing of the lower limit position)
Upper limit position and lower limit position are fixed, and the set
positions are displayed for two seconds, then setting is completed.
After the setting is completed, the louver which was
set moves from the original position to the lower
limit position, and goes back to the original position
again. (This operation is not performed if the indoor
unit and/or indoor unit fan is in operation.)
[Example]
(displayed for two seconds)
10.Press button.
Louver adjusting mode ends and returns to the original display.
Caution
If the upper limit position number and the lower limit position number are set to the same
position, the louver is fixed at that position auto swing does not funtion.
ATTENTION
If you press RESET button during settings, the display will return to previous display.If you press
button during settings, the mode will be ended and return to original display, and the settings that have not been
completed will become invalid.
When plural remote controllers are connected, louver setting operation
cannot be set by slave remote controller.
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SET button and
"
"
(horizontal)
(downwards)
the position of the louver
Upper
position
Movable
range
Lower
position