S-20~50YM3HPQ
Urban Multi air conditioner
4PW18607-1A
Installation and operation manual
8
Computerised control (forced off and on/off operation)
1.
Wire specifications and how to perform wiring.
•
Connect input from outside to terminals T1 and T2 of the terminal
board (remote controller to transmission wiring).
See figure 11
2.
Actuation
•
The following table explains "forced off" and "on/off operations" in
response to input A.
3.
How to select forced off and on/off operation
•
Turn the power on and then use the remote controller to select
operation.
•
Set the remote controller to the field set mode. For details, refer to
the chapter "How to set in the field", in the manual of the remote
controller.
•
When in the field set mode, select mode No. 12, then set the first
code (switch) No. to "1". Then set second code (position) No. to
"01" for forced off and to "02" for on/off operation. (forced off at
factory set.) (See figure 23)
Centralized control
For centralized control, it is necessary to designate the group No. For
details, refer to the manual of each optional controller for centralized
control.
I
NSTALLATION
OF
THE
DECORATION
PANEL
Read the chapter "Test operation" on page 8 before making a test run
without attaching the decoration panel.
Refer to the installation manual delivered with the decoration panel.
After installing the decoration panel, ensure that there is no space
between the unit body and decoration panel. Otherwise air may leak
through the gap and cause dewdrop. (See figure 16)
T
EST
OPERATION
Refer to the installation manual of the outdoor unit.
■
The operation lamp of the remote controller will blink when an
error occurs. Check the error code on the liquid crystal display to
identify the trouble. An explanation of error codes and the
corresponding trouble are provided on "Caution for servicing" of
the outdoor unit.
If any of the items in the table below are displayed, there may be a
problem with the wiring or power, so check the wiring again.
M
AINTENANCE
IMPORTANT
■
ONLY A QUALIFIED SERVICE PERSON IS ALLOWED TO
PERFORM MAINTENANCE.
■
BEFORE OBTAINING ACCESS TO TERMINAL DEVICES, ALL
POWER SUPPLY CIRCUITS MUST BE INTERRUPTED.
■
DO NOT USE WATER OR AIR OF 50°C OR HIGHER FOR
CLEANING AIR FILTERS AND OUTSIDE PANELS.
■
WHEN CLEANING THE HEAT EXCHANGER, BE SURE TO
REMOVE THE SWITCHBOX, FAN MOTOR AND DRAIN PUMP.
WATER OR DETERGENT MAY DETERIORATE THE
INSULATION OF ELECTRIC COMPONENTS AND RESULT IN
BURN-OUT OF THESE COMPONENTS.
See figure 24
Wire specification
Sheathed vinyl cord or cable (2 wire)
Gauge
0.75~1.25 mm
2
Length
≤
100 m
External terminal
Contact that can ensure the minimum applicable
load of 15 V DC, 10 mA
1
Input A
Forced off
on/off operation
Input "on" stops
operation
input off
➜
on: turns on the unit (impossible by
remote controllers)
Input "off" enables
control
input on
➜
off: turns off the unit
(by remote controller)
1
Second code No.
2
Mode No.
3
First code No.
4
Field set mode
Remote control
display
Content
"
Concentrated
Management
"
is lit up
■
There is a short circuit at the FORCED OFF
terminals (T1, T2)
"
U4
"
is lit up
"
UH
"
is lit up
■
The power on the outdoor unit is OFF.
■
The outdoor unit has not been wired for
power supply.
■
Incorrect wiring for the transmission wiring
and/or FORCED OFF wiring.
No display
■
The power on the indoor unit is OFF.
■
The indoor unit has not been wired for
power supply.
■
Incorrect wiring for the remote controller
wiring, the transmission wiring and/or the
FORCED OFF wiring.
1
Indoor unit
2
Drain pumping out device (built-in)
Drain water removed from the room during cooling.
3
Power supply wiring
4
Drain pipe
5
Suction grille
6
Air filter (inside suction grille)
7
Model name label (inside suction grille)
8
Air flow flap (at air outlet)
9
Refrigerant pipe
10
Transmission wiring
11
Air outlet
12
Grounding wire
Conducts electricity from the unit into the ground to prevent
electric shock.
13
Remote controller
