Service manual

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The drilling of holes in the ceiling must be done by the professional personnel.
Ceiling
Installation stands for main body of the unit
(160)
Above 20
Notes: The dimension for the ceiling openings with * marks can be as large as 910mm. But the overlapping sections
of the ceiling and the decorated surface boards should be maintained at no less than 20mm.
2.2.4 Installation Clearance Data
CASSETTE UNITS
=1800
=1500
=1500
H=260mm
unit:mm
>20
Wall
surface
Wall
surface
Wall
surface
Ground
surface
H
Min. cooling/heating
(capability test code)
Cooling IPLV test
P0
/
Quick
ash
/ P0
P0
Cooling IPLV test / /
Quick
ash
P0
Mid. Cooling/heating
(capability test code)
Cooling level AA
performance test
P3
/
Quick
ash
/ P3
P3
Level AA cooling
performance test
/ /
Quick
ash
P3
Phase over-current
protection
Compressor over-
current protection
P5
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Drive board
communication error(for
the commercial unit)
Communication error
between the inverter driver
to the main controller
P6
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Short/open circuit
of the of the module
temperature sensor
Short/open circuit of the of the
module temperature sensor
P7
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Module temperature
protection
Module temperature protection P8
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
AC contact protection (for
the commercial unit)
AC contact protection P9
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Circuit sensor error Circuit sensor error Pc
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Transducer connection
protection (for the
commercial unit)
Transducer connection
protection
Pd
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
AC current
protection(input side)
AC current
protection(input side)
PA
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Temperature drift protection
(for the commercial unit)
Temperature drift protection PE
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Drive board ambient
temperature sensor error
(for the commercial unit)
Drive board ambient
temperature sensor error
PF
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
DC link high voltage
protection
DC link low voltage protection PL
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
DC link low voltage
protection
DC link high voltage protection PH
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
/ Abnormal AC input voltage PP
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Capacitor charging error Capacitor charging error PU
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Jumper terminal
error protection
Jumper terminal
error protection
C5
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Defrosting or oil
returning in heating
Defrosting or oil
returning in heating
H1 / /
Flash
once
H1
Defrosting
symbol
displayed
/ Forcible defrosting H1
Quick
ash
/ / H1 H1
Compressor thermal
overload protection.
Compressor overload
protection.
H3
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Modulecurrent protection
(namely
IPM protection)
IPM Module current protection H5
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Compressor
desynchronizing
Compressor desynchronizing H7
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
PFC Protection PFC Protection HC
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Too high power protection
(available for the
residential outdoor unit)
Too high power protection
(available for the
residential outdoor unit)
L9
Flash 20
times
/ / oE oE
Compressor startup failure Compressor startup failure Lc
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Compressor phase failure/
reverse protection
Compressor phase failure/
reverse protection
Ld
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Compressor rotation
failure(for the
commercial unit)
Compressor rotation failure(for
the commercial unit)
LE
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Over speed (for the
commercial unit)
Over speed LF
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
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