EN
Operation Test
• Connect power and then press ON/OFF button on remote control to
start the unit.
• Press mode button to select auto, cooling, dry or fan function, and then
check if the unit operates normally.
• If ambient temperature is below 16°C, the unit can't operate in cooling
mode.
Wiring Diagram
The electric schematic diagram are subject to change without notice.
Please refer to the one on the unit.
UL-C09EA-W
YEGN
PE
PE
ELECTRIC
BOX
CONDENSER
R(M)
REC
DISPLAY
BOARD
RECEIVER
BOARD
RT2RT1
SWITCH
WATER LEVEL
POWER
L
N
BU
N3
S
COMP
C
YE
C1
K1
L
COMP
AP1
N1
WATER1
DISP2
RD
FAN
RD
BU
RD
DISP2
DISP1
AP2
M1
BN
MOTOR
RD
C2
PE
AP3
PE
YEGN
DISP1
COMP.
MAIN BOARD
BU(WH)
YEGN(GN)
BN(BK)
WATER MOTOR
M2
PE
YEGN
CAP.
CAP.
FAN
SENSOR
T-SENSOR
ROOM TEMP.
SENSOR
TUBE TEMP.
HIGH-WP
RD
RD
SA
Specialist's Manual
Aptitude requirement for maintenance personnel
(repairs should be done only by specialists).
1. Any person who is involved with working on or breaking into a
refrigerant circuit should hold a current valid certicate from an
industry-accredited assessment authority, which authorises their
competence to handle refrigerants safely in accordance with an
industry recognised assessment specication.
2. Servicing shall only be performed as recommended by the equipment
manufacturer. Maintenance and repair requiring the assistance of
other skilled personnel shall be carried out under the supervision of
the person competent in the use of ammable refrigerants.
Safety preparation work
The maximum refrigerant charge amount is shown on the following table.
(Note: Please refer to the nameplate for the charging quantity of R290).
Room area (m) 4 11 15
Maximum charge (kg) <0.152 0.225 0.304
Prior to beginning work on systems containing ammable refrigerants,
safety checks are necessary to ensure that the risk of ignition is minimised.
For repair to the refrigerating system, the following precautions shall be
complied with prior to conducting work on the system.
Work procedure
Work shall be undertaken under a controlled procedure so as to minimise
the risk of a ammable gas or vapour being present while the work is being
performed.
General work area
All maintenance sta and others working in the local area shall be
instructed on the nature of work being carried out. Work in conned
spaces shall be avoided. The area around the workspace shall be sectioned
o. Ensure that the conditions within the area have been made safe by
control of ammable material
Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant detector prior to
and during work, to ensure the technician is aware of potentially toxic or