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9.19. Running in soft dry mode
According to the indoor temperature-set the temperature so as to determine the indoor load
(
(
D).
Indoor load
D
indoor temperature
-set temperature
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5
-4.0
-4.5
-5.0
-5.5
-6.0
-6.5
-7.0
-7.5
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
117
CU-MP28DBH5/CU-MP50DBH5
9.19.1.
When the indoor load ( D) is under the values tabled in the following
table and the indoor unit has been running for 5 minutes, the indoor
unit will send the signal of relay shut-down to the outdoor unit and
the air-conditioner will stop running.
unit will send the signal of relay shut-down to the outdoor unit and
the air-conditioner will stop running.
9.19.2. Outline of indoor load (
D) control actions
Relay shut-down position
EEPROM data
Type
Wall-mounted
type
Cassette type
Hide-away Type
D2 D3
D2 D3
Relay shut-down position
12
11
12
11
Within 3 minutes after the air-conditioner stopped running, it cannot be restarted at once
although the indoor load (
although the indoor load (
D) exceeds the range in the following table
EEPROM data
Stopped
In abnormal display
Type
Wall-mounted
type
Cassette type
Hide-away
D2 D3
D2 D3
0
0
In floating switch actions
In delay control 3 minutes
after stop
after stop
In stop areas of deicing
control
In abnormal mode
Forced cooling
running
running
Within 5 minutes after
restart
restart
Indoor load in indoor temperature area
Except the above
0
22
22
22
22
13
12
13
12
0
0
0
0
0
0
0
0
0
0
0
0
118
Hide-away
Type D4
CU-MP28DBH5/CU-MP50DBH5
Hide-away D4
119
CU-MP28DBH5/CU-MP50DBH5
cooling full load control
When there is a difference of over 5
between the set temperature and the indoor
temperature after running:
If the cooling load is high, lower the set temperature so as to reduce the running obstacle
caused by compressor stop. The indoor fan control will not change.
caused by compressor stop. The indoor fan control will not change.
Deicing control
Whatever the type is, if the fan speed has reached the high position, it will not change. In
the resumed area, the fan speed will not be subject to deicing control.
the resumed area, the fan speed will not be subject to deicing control.
indoor temperature
set temperature
after 30-minutes full load running
normal running
running
4 m i n u t e s a f t e r t h e c o m p r e s s o r i s
started, if the temperature continues to
fall (as the right Table), the compressor
will stop running so as to prevent the
indoor heat exchanger from frosting.
The fan speed will change.
When the temperature of the indoor heat
exchanger rises to DT04 (resumed), the
compressor will be restarted.
started, if the temperature continues to
fall (as the right Table), the compressor
will stop running so as to prevent the
indoor heat exchanger from frosting.
The fan speed will change.
When the temperature of the indoor heat
exchanger rises to DT04 (resumed), the
compressor will be restarted.
In the status of cooling operation, 6-
minute waiting time in time delay safety
control is effective.
Wall-mounted type: When the heat
exchanger temperature moves from
DT03 to DT04, the fan speed will rise by
1 tap.
Other: The fan speed will rise by 1 tap.
control is effective.
Wall-mounted type: When the heat
exchanger temperature moves from
DT03 to DT04, the fan speed will rise by
1 tap.
Other: The fan speed will rise by 1 tap.
DT04
DT03
DT02
DT01
DT00
resetting range
rising range
Unchanged range
falling range
stop range
indoor heat
exchanger
temperature
exchanger
temperature
6 minutes
When the indoor tubing temperature exceeds DT04 (
), deicing control will be released.
Type
Deicing control
1HP
1.5HP
1.75HP
2HP
2.5HP
3HP
0
0
0
0
0
0
3
3
3
3
3
3
4
4
4
4
4
4
5
5
5
5
5
5
6
6
6
6
6
6
DT00
DT01
DT02
DT03
DT04
120
CU-MP28DBH5/CU-MP50DBH5
Condensation control
1. When the air-conditioner has been continuously running for 20 minutes and the
outdoor air temperature is under 30
, and the fan speed is under Lo and the heat
exchanger temperature is in the following ranges, condensation control will be carried
out so as to prevent condensation.
out so as to prevent condensation.
Condensation control will be released
w h e n
t h e
c o m p r e s s o r
i s
stopped, the outdoor air temperature
is over 30
is over 30
, the indoor fan speed is
over Lo, the remote control setting
( f a n
( f a n
s p e e d ,
t e m p e r a t u r e )
i s
changed, or the heat exchanger
temperature is in the resuming range.
temperature is in the resuming range.
15
14
13
12
indoor heat exchanger
temperature
temperature
resetting range
rising range
unchanging
range
falling range
2. Airflow direction control
Wall-mounted type: the position of the vertical vane is the angle of condensation control. If
the fan speed is Slo, increase it to the Lo status.
Cassette type: refer to the angle of condensation control.
the fan speed is Slo, increase it to the Lo status.
Cassette type: refer to the angle of condensation control.
Anti-fog control
When the set fan speed of the Remote control is under Lo and the temperature of the heat
exchanger is in the following ranges, it is in anti-fog control.
15
14
13
12
indoor heat exchanger
temperature
temperature
resetting range
rising range
unchanging
range
falling range
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
indoor fan
compressor
relay
draining pump
10 seconds
If the compressor is running, 10 seconds after the indoor fan starts to operate, the drain pump
will start to work.
wall-mounted type: if the fan speed is Slow,
change it to Lo.
change it to Lo.
When the compressor is stopped, the
indoor fan speed is not less than Me, or
the heat exchanger temperature is in the
resetting range, anti-fog control will be
released.
indoor fan speed is not less than Me, or
the heat exchanger temperature is in the
resetting range, anti-fog control will be
released.
1.When the air conditioner starts to run:
Drain pump control
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