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Actions when pressing the test run button on the wired remote control.
Actions of remote control
Actions of air-conditioner
cooling + test operation
Forced cooling operation (fan speed: Hi)
soft dry + test operation
Forced cooling operation (fan speed: Hi)
Heating + test operation
Forced heating operation
(Fan speed: wall-mounted type: Shi other: Hi)
(Fan speed: wall-mounted type: Shi other: Hi)
Blowing + test operation
Forced fan operation (fan speed: Hi)
Auto + test operation
Actions in the auto-determining mode
Receiving sound
Start/Stop:
beep (long )
Normal operation:
beep (short )
Functions variation:
beep (short )
Releasing functions of single unit:
beep (short )
1. When the indoor unit receives the signal from the remote control, the indoor unit will emit
the confirmation sound to show reception.
2. In time of stopping, the air-conditioner will beep when receiving signals.
3. If the air-conditioner is abnormal, the sound of beep will be different when the air-conditioner
is operated by the remote control.
Beginning forced operation:
Beep
4
(Operation on/off )
Normal operation
Beep (short)
Beep (long)
Stop
(Remote control operation in forced operation)
forced operation
Beep (long)
Beep
3
Stop
(Operating the relative buttons of time setting, etc.)
X X operation
Beep (short)
Beep (short)
X X operation
(time setting)
Beep
(short)
X X operation
(timer setting cancel)
Beep (short)
Beep (short)
X X operation
(timer setting/cancel)
Beep
(short)
Beep
(short)
Beep
(short)
97
CU-MP28DBH5/CU-MP50DBH5
Remote control
Type
rotating speed
Shi
Shi
Me+
Me
Me-
Lo
Lo-
SLo
SSLo
W8W W7W W6W W5W W4W W3W W2W W1W W1SW
Heating
Cooling, soft dry and air circulation
Remote control
Type
Rotating speed
Shi
Hi
Me+
Me
Me-
Lo
Lo-
SLo
SSLo
W8C
W7C
W6C
W5C
W4C
W3C
W2C
W1C W1SC
9.15. Indoor unit display functions
24-hour timerr
function not set
function not set
operation
Mode judgment at the
beginning of operation
beginning of operation
Operation indicator
light (green)
light (green)
Timer indicator
(green)
24-hour timer
function set
function set
deicing operation
In warm boot
In different
modes of waiting
modes of waiting
24-hour timer
function not set
function not set
24-hour timer
function set
function set
In heating and
heat-removing control
heat-removing control
In abnormal display
Stop
Flash
Flash
Flash
Flash
Note 1: Flash
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Note 1: In different modes of standby , the flash interval : ON 2.5 seconds
OFF 0.5seconds
Other
ON 0.5 seconds
OFF 0.5 seconds
9.16. Common functions of all the operation methods
9.16.1. Motor control of indoor fan
A-1 Manual fan speed (wall-mounted type)
Rotating speed of the fan is decided by remote control setting.
The speed of W4-W6 is calculated by the following formulas.
W6=0.75
(W7-W3)+W3
W5=0.50
(W7-W3)+W3
W4=0.25
(W7-W3)+W3
98
CU-MP28DBH5/CU-MP50DBH5
Program control: the fan will repeat in the following way (8 taps/10 seconds per tap)
a
b
c
d
e
f
g
h
a
b
B-50
r/min
990
1090
1190
Rotating speed
r/min
1040
1140
1240
B+50
r/min
1090
1190
1290
Program control
wall-mounted type 1HP
wall-mounted type 1.5HP
wall-mounted type 2HP
Heating
Controlled by piping temperature.
A-2 auto fan speed (wall-mounted type)
cooling
Determine the fan speed according to the room temperature range (seen as the
following table)
following table)
Fan rotating speed
Normal auto fan speed
Program control
Me-(W4C)
Lo(W3C)
18
D
16
D<18
D<16
Wall-mounted
type (r/min)
1HP wall-mounted
type (r/min)
1.5HP wall-mounted
type (r/min)
2HP wall-mounted
type (r/min)
Calculate
Calculate
Calculate
Calculate
Calculate
Calculate
Calculate
Calculate
Calculate
Calculate
Calculate
Calculate
Calculate
Calculate
Calculate
Calculate
Calculate
Calculate
In time of start
W8C
W7C
W6C
W5C
W4C
W3C
W2C
W1C
W1SC
W8W
W7W
W6W
W5W
W4W
W3W
W2W
W1W
W1SW
1230
1170
940
850
750
650
1290
1230
990
880
770
650
1300
1240
1000
900
800
700
1350
1280
1050
950
850
700
1450
1400
1150
1000
900
750
1500
1450
1200
1050
950
750
99
CU-MP28DBH5/CU-MP50DBH5
Compressor
Indoor fan
ON
OFF
OFF
OFF
OFF
OFF
OFF
C Deodorization control
In the modes of cooling and soft dry (excluding deicing control), the air-conditioner can
deduce the status (dry or humid) of the heat exchanger when being started. If in the dry
status, the heat exchanger will restrain airflow (deodorization control).
deduce the status (dry or humid) of the heat exchanger when being started. If in the dry
status, the heat exchanger will restrain airflow (deodorization control).
When the air-conditioner is started, the indoor fan will run at low fan speed and stop at
fixed time.
When the air-conditioner is stopped, the indoor fan will run continuously.
fixed time.
When the air-conditioner is stopped, the indoor fan will run continuously.
Wall-mounted type
Deodorization status
Relay on/off
Airflow
rate
rate
cooling
area
area
soft dry
area
area
Relay on
Compressor
operation
Compressor
operation
Relay off
Or compressor
stopped
Or compressor
stopped
Auto
fan
speed
fan
speed
1
1
2
3
4
4
5
5
Blowing
rate
auto
rate
auto
OFF
OFF
OFF
OFF
OFF
OFF
SSLo
SSLo
SSLo
SSLo
SSLo
SSLo
Slo
cassette type:
6-pole AC motor 3-speed
Hide-away Type:
4-pole AC motor
3-speed
B-1 manual fan speed (except wall-mounted type)
operation mode
fan speed
Manual fan speed
Auto fan speed
Manual fan speed
Auto fan speed
Manual fan speed
Auto fan speed
Manual fan speed
Auto fan speed
Cooling
Soft dry
Heating
Air Circulation
Hi
Me
Lo
Stop
B-2 auto fan speed (except wall-mounted type)
Cooling: deodorization control
Heating: controlled by the temperature of the piping.
Heating: controlled by the temperature of the piping.
100
Auto
fan
speed
fan
speed
CU-MP28DBH5/CU-MP50DBH5
4
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