SPLIT TYPE
ROOM AIR CONDITIONER
WALL MOUNTED
type
Models Indoor unit Outdoor unit
INVERTER
SERVICE
INSTRUCTION
R410A
ASU09RL2
ASU12RL2
AOU09RL2
AOU12RL2
CONTENTS
1. DESCRIPTION OF EACH CONTROL OPERATION
1. COOLING OPERATION................................................................................................
3. DRY OPERATION.........................................................................................................
2. HEATING OPERATION.................................................................................................
5. INDOOR FAN CONTROL..............................................................................................
4. AUTO CHANGEOVER OPERATION............................................................................
7. LOUVER CONTROL.....................................................................................................
6. OUTDOOR FAN CONTROL..........................................................................................
9. TIMER OPERATION CONTROL...................................................................................
8. COMPRESSOR CONTROL..........................................................................................
11. FOUR-WAY VALVE EXTENSION SELECT................................................................
10. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST ).................................
13. MANUAL AUTO OPERATION ( Indoor unit body operation ).....................................
12. AUTO RESTART.........................................................................................................
14. FORCED COOLING OPERATION..............................................................................
15. COMPRESSOR PREHEATING..................................................................................
16. ECONOMY OPERATION............................................................................................
01-01
01-02
01-02
01-03
01-04
01-06
01-07
01-08
01-09
01-11
01-11
01-11
01-12
01-12
01-12
17. POWERFUL OPERATION.......................................................................................... 01-12
19. OFF DEFROST OPERATION CONTROL...................................................................
18. DEFROST OPERATION CONTROL........................................................................... 01-13
01-15
20. VARIOUS PROTECTIONS.......................................................................................... 01-16
01-11
2. TROUBLE SHOOTING
2-1 ERROR DISPLAY.......................................................................................................
2-2 TROUBLE SHOOTING WITH ERROR CODE............................................................
2-3 TROUBLE SHOOTING WITH NO ERROR CODE.....................................................
02-01
02-02
02-21
2-4 SERVICE PARTS INFORMATION.............................................................................. 02-26
3. APPENDING DATA
3-1 FUNCTION SETTING.................................................................................................
3-1-1 INDOOR UNIT....................................................................................................
3-1-2 Procedures to change the Function Setting for wireless RC..............................
03-01
03-01
03-03
3-2 Thermistor Resistance Values.....................................................................................
3-2-1 INDOOR UNIT....................................................................................................
3-2-2 OUTDOOR UNIT................................................................................................
03-06
03-06
03-06
1 . DESCRIPTION OF EACH
CONTROL OPERATION
R410A
WALL MOUNTED type
INVERTER
( Fig.1 : Outdoor temperature zone )
1. COOLING OPERATION
A sensor (room temperature thermistor) built in the indoor unit body will usually perceive
difference or variation between a set temperature and present room temperature, and
controls the operation frequency of the compressor.
Minimum
frequency
Maximum
frequency
Maximum
frequency
AOU09RL2
AOU12RL2
18rps
57rps
80rps
36°C
(97°F)
A zone
34°C
(93°F)
32°C
(90°F)
B zone
30°C
(86°F)
21°C
(70°F)
C zone
19°C
(66°F)
D zone
Indoor fan mode
Me Lo Quiet
A zone 80rps 49rps 42rps 32rps
B zone 80rps 49rps 42rps 32rps
C zone 80rps 49rps 42rps 32rps
ASU09RL2
D zone 49rps 44rps 40rps 29rps
E zone 49rps 44rps 40rps 29rps
F zone 49rps 44rps 40rps 29rps
( Table 1 : Compressor frequency range )
01-01
E zone
F zone
10°C
(50°F)
0°C
(32°F)
12°C
(54°F)
2°C
(36°F)
* When the room temperature is between +2°C(4°F) to -2.5°C(-5°F) of the setting temperature,
the compressor frequency is controlled within the range shown in Table1.
However, the maximum frequency is limited in the range shown in Fig.1 based on the indoor
fan mode and the outdoor temperature.
* If the room temperature is some degrees lower than a set temperature,
the compressor will be stopped.
ASU12RL2
A zone 96rps 61rps 51rps 33rps
B zone 96rps 61rps 51rps 33rps
C zone 96rps 61rps 51rps 33rps
D zone 73rps 57rps 45rps 33rps
E zone 73rps 57rps 45rps 33rps
F zone 73rps 57rps 45rps 33rps
When the outdoor
temperature drops
When the outdoor
temperature rises
( Table 2 : Limit of maximum speed based on outdoor temperature )
80rps
96rps
Outdoor
temp. zone
Hi
* If the room temperature is 2°C(4°F) higher than a set temperature, the compressor operation
frequency will attain to maximum performance.
When the compressor operates for 30 minutes continuously at over the maximum frequency ,
the maximum frequency is changed from Maximum Frequency to Maximum Frequency.
2. HEATING OPERATION
A sensor (room temperature thermistor) built in the indoor unit body will usually perceive
difference or variation between a set temperature and present room temperature, and
controls the operation frequency of the compressor.
* If the room temperature is lower by 3°C (6°F) than a set temperature, the compressor operation
frequency will attain to maximum performance.
* If the room temperature is some degrees higher than a set temperature,
the compressor will be stopped.
* When the room temperature is between +2.5°C (+5°F) to -3°C (-6°F) of the setting temperature,
the compressor frequency is controlled within the range shown in Table 3.
However, the maximum frequency is limited shown in Table 4 based on the fan mode.
( Table 3 : Compressor frequency range )
01-02
Minimum
frequency
Maximum
frequency
AOU09RL2
AOU12RL2
18rps
120rps
80rps
3. DRY OPERATION
The compressor frequency shall change according to the temperature, set temperature,
and room temperature variation which the room temperature sensor of the indoor unit body has
detected as shown in the Table 5.
However, after the compressor is driven, the indoor unit shall run at operation frequency of
(09 : 52 rps, 12 : 61 rps) for 60 seconds.
Ts+0.5°C (Ts+1°F)
Ts -1.5°C (Ts-3°F)
Ts -0.5°C (Ts-1°F)
Ts+1.5°C (Ts+3°F)
( Table 5 : Compressor frequency in Dry mode)
( Fig.2 : Compressor control based on room temperature )
Operating
frequency
30rps
28rps
0rps
AO09RL2
X zone
J zone
Y zone
Operating
frequency
J zone
Y zone
X zone 33rps
25rps
0rps
AO12RL2
X zone
J zone
Y zone
When the room
temperature drops
When the room
temperature rises
Indoor fan mode
Me Lo Quiet Auto
120rps
80rps
( Table 4 : Limit of maximum speed based on outdoor temperature )
Hi
AOU09RL2
AOU12RL2
4. AUTO CHANGEOVER OPERATION
01-03
(Fig. 3 : Operation flow chart in Auto changeover)
START
Room temp.
Room temp.
>Ts+2°C (4°F) ?
COOLING OPERATION
HEATING OPERATION
YES
YES
NO
NO
NO
NO
YES
YES
TS : Setting temperature
<Ts- 2°C(4°F) ?
Thermostat remains
in OFF state for 6 minutes or
longer?
System stops
or operation command other than
auto changeover operation?
NO
NO
Thermostat remains
in OFF state for 6 minutes or
longer?
System stops
or operation command other than
auto changeover operation?
YES
YES
When the air conditioner is set to the AUTO mode by remote control, operation starts in the optimum
mode from among the Heating, Cooling, Dry and Monitoring modes.
During operation, the optimum mode is automatically switched in accordance with temperature changes.
The temperature can be set between 18°C (64°F) and 30°C (88°F) in 1°C (2°F) steps.
5. INDOOR FAN CONTROL
The airflow can be switched in 5 steps such as Auto, Quiet, Lo, Me, Hi, while the indoor fan only runs.
When fan mode is set at [Auto], it operates on [Me] fan Speed.
01-04
2. FAN OPERATION
3. COOLING OPERATION
Switch the airflow [Auto], and the indoor fan motor will run according to a room temperature, as shown in Fig4.
On the other hand, if switched in [Hi] [Quiet], the indoor motor will run at a constant airflow of [Cool]
operation modes Quiet, Lo, Me, Hi, as shown in Table 6.
( Fig.4 : Airflow change - over ( Cooling : Auto ) )
When the room
temperature rises
When the room
temperature drops
TR : Room temperature
Ts : Setting temperature
TR-Ts > 2°C (4°F)
1°C (2°F) > TR-Ts
2°C (4°F) > TR-Ts > 1°C (2°F)
=
TR-Ts > 2.5°C (5°F)
=
1.5°C (3°F) > TR-Ts
2.5°C (5°F) > TR-Ts > 1.5°C (3°F)
=
Hi mode
Me mode
Lo mode
1. Fan speed
( Table 6 : Indoor fan speed )
Operation mode Air flow mode
Speed (rpm)
Cooling/ Fan
Heating
Dry
X zone: 700
J zone: 600
X zone: 700
J zone: 600
ASU09RL2
ASU12RL2
4. DRY OPERATION
Refer to the Table 6.
During the dry mode operation, the fan speed setting can not be changed.
Hi 1360
Hi 1320
Me+ 1290
Me 1120
Me 1120
Lo 900
Lo 840 860
Quiet 700
* Soft Quiet 600
Quiet 700
S-Lo 480
Cool air prevention 600
Powerful 1420
Powerful 1400
1360
1320
1290
1120
1120
900
700
600
700
480
600
1420
1400
*Note, during Economy operation and operation mode is Fan, air flow is 1 step downs.
(Hi > Me, Me > Lo, Lo > Quiet, Quiet > Soft Quiet)
The maximum value of the indoor fan speed is set as shown in Fig.6 based on the detected
temperature by the indoor heat-exchanger sensor on heating mode.
( Fig.6 : Cool air prevension control )
01-05
5. HEATING OPERATION
Switch the airflow [Auto], and the indoor fan motor will run according to a room temperature, as shown in Fig. 5
On the other hand, if switched in [Hi] [Quiet], the indoor motor will run at a constant airflow
of [Heat] operation modes Quiet, Lo, Me, High, as shown in Table 6.
6. COOL AIR PREVENTION CONTROL (Heating mode)
( Fig.5 : Airflow change - over ( Heating : Auto ) )
TR-Ts > -1.5°C (-3°F)
=
-2.5°C (-5°F) > TR-Ts
-1.5°C (3°F) > TR-Ts > -2.5°C (-5°F)
=
TR-Ts > -1°C (-2°F)
=
-2°C (-4°F) > TR-Ts
-1°C (-2°F) > TR-Ts > -2°C (-4°F)
=
When the room
temperature rises
When the room
temperature drops
TR : Room temperature
Ts : Setting temperature
Lo mode
Me mode
Me+ mode
42°C (108°F)
30°C (86°F)
34°C (93°F)
When the Indoor heat
exchanger temp. rises
When the Indoor heat
exchanger temp. drops
When the Indoor heat
exchanger temp. rises
When the Indoor heat
exchanger temp. drops
* Hi or setting
Fan mode
* Me+ or setting
Fan mode
* Lo or setting
Fan mode
Cool air
prevention
39°C (102°F)
37°C (99°F)
37°C (99°F)
32°C (90°F)
28°C (82°F)
S-Lo
Switch the airflow [Auto] at cooling mode, and the indoor fan motor will run as shown in Fig.7.
7. MOISTURE RETURN PREVENTION CONTROL (Cooling mode& Dry mode)
( Fig.7 : Indoor fan control )
Compressor
ON
OFF
Indoor fan
Setting air flow
Indoor fan
(as shown in Table 7)
S-Lo
OFF
10 30 60 180 60 180 60 10 30
(sec)
( Table 7 : Indoor fan speed )
X zone J zone
ASU09/12RL2
700rpm 600rpm
Y zone
0 480rpm 700rpm
Dry
Cooling
42°C
(108°F)
30°C
(86°F)
34°C
(93°F)
Powerful
Hi
Lo
Cool air
prevention
39°C
(102°F)
37°C
(99°F)
37°C
(99°F)
32°C
(90°F)
28°C
(82°F)
S-Lo
<Normal operation>
<Powerful operation>
* Lower speed is selected.
* Lower speed is selected.
6. OUTDOOR FAN CONTROL
( Table 9 : Outdoor fan speed )
( Fig.8 : Outside air temperature zone selection )
Refer to Fig.8
01-06
1. Outdoor Fan Motor
2. Fan Speed
Following table shows the type of the outdoor fan motor. The control method is different
between AC motor and DC motor.
*The outdoor fan speed mentioned adove depends on the compressor frequency.
(When the compressor frequency increases, the outdoor fan speed also changes to the higher
speed. When the compressor frequency decreases, the outdoor fan speed also changes to the
lower speed.)
*After the defrost control is operated on the heating mode, the fan speed keeps at the higher speed
as table 10 without relating to the compressor frequency.
( Table 8 : Type of Motor )
Zone
Cooling Heating
AOU09RL2 900 / 650 / 470 730 / 470
Y 730 / 650 / 470
860 / 760 / 470
860 / 470 / 380
730 / 470 / 360
360 / 150
210 / 150
380 / 280
280 / 200
Z
F
G
Y
Z
F
G
AOU12RL2 900 / 760 / 680 / 470 760 / 470
Dry
AC motor DC motor
AOU09RL2
AOU12RL2
( Table 10 : Outdoor fan speed after the defrost )
900 rpm
AOU09RL2
AOU12RL2
21°C (70°F)
Outside air
temperature
Outside air
temperature
2°C (36°F)
10°C (50°F)
Y zone
Z zone
F zone
12°C (54°F)
19°C (66°F)
0°C (32°F)
G zone
7. LOUVER CONTROL
1. VERTICAL LOUVER CONTROL
3. SWING OPERATION
Each time the button is pressed, the air direction range will change as follow:
(Function Range)
01-07
The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected.
Cooling / Dry mode Horizontal flow
Heating mode Downward flow
When the swing signal is received from the remote controller, the vertical louver starts to swing.
(Table10 : Swinging Range)
Fig.8 : Air Direction Range
Cooling / Dry mode
Fan mode ( )
Types of Air flow Direction Setting:
, , , : During Cooling/Dry modes
, , , : During Heating
The Remote Controller's display does not change.
Use the air direction adjustments within the ranges shown above.
If you set the angle to position ~ for more than 30 minutes in Cooling or Dry mode,
they automatically return to position .
In Cooling or Dry mode, if the angle is set to position ~ for many hours,
condensation may be formed, and the drips may wet your property.
Range
Heating
mo
de
Fa
n
m
od
e
(
)
The SWING operation may stop temporarily when the air conditioner’s fan is not operating,
or when operating at very low speeds.
2. ADJUST THE RIGHT-LEFT LOUVERS
Move the Right-Left louvers to adjust air flow in the direction you prefer.
Knob (2 places)
To select Vertical Airflow Swing Operation
To select Horizontal Airflow Swing Operation
(No function)
1
2
3
4
5
6
7
Right-Left Louvers
Knob
8. COMPRESSOR CONTROL
01-08
1. OPEARTION FREQUENCY RANGE
The operation frequency of the compressor is different based on the operation mode as
shown in the Table 11.
Cooling / Dry Heating
Minimum Maximum Minimum Maximum
AOU09RL2
AOU12RL2
18rps
80rps
18rps 120rps
96rps
AOU09RL2
AOU12RL2
AOU09RL2
AOU12RL2
56rps 67rps 75rps
(Table 11 : Compressor frequency range)
2. OPEARTION FREQUENCY CONTROL AT NORMAL START UP
The compressor frequency soon after the start-up is controlled as shown in the Fig.9.
(Fig.9 : Compressor control at start-up)
Time
Time Time Time
Time
(Frequency)
Frequency
Frequency
Frequency Frequency
Frequency
Frequency
Frequency
Frequency
Frequency
Frequency
Time
Time Time Time
Time
80sec 140sec 200sec
(Time)
AOU09RL2
AOU12RL2
78rps 78rps
Frequency
Time
6
Frequency
Time
6
78rps
56rps 74rps 87rps 97rps 108rps 119rps
380sec 440sec440sec
60sec 100sec 140sec 200sec 410sec350sec
3. LIMITATION OF COMPRESSOR FREQUENCY BY OUTDOOR TEMPERATURE
The minimum compressor frequency is limited by outdoor temperature as shown in the Table12.
Under Over Under Over Under Over
45rps 27rps
35rps 23rps
30rps-------
(Table12 : Limitation of Compressor Frequency)
AOU09RL2
AOU12RL2
10°C (50°F) 14°C (59°F) 40°C (104°F)
Under Over Under Over Under Over Under Over
34rps 22rps 27rps
36rps 27rps 27rps
30rps-------
- 3°C (26°F) 7°C (45°F) 14°C (59°F) 40°C (104°F)
[ Cooling/ Dry ]
[ Heating ]
9. TIMER OPEARTION CONTROL
1. OPEARTION FREQUENCY RANGE
The Table 13 shows the available timer setting based on the product model.
ON TIMER / OFF TIMER PROGRAM TIMER SLEEP TIMER
ASU09RL2
ASU12RL2
OFF timer : When the clock reaches the set time, the air conditioner will be turned off.
Operation mode
Stop mode
Set time of timer
ON timer : When the clock reaches the set time, the air conditioner will be turned on.
Operation mode
Stop mode
Set time of timer
The program timer allows the OFF timer and ON timer to be used in combination one time.
Operation mode
Operation will start from the timer setting (either OFF timer or ON timer) whichever is closest
to the clock's current timer setting.
The order of operations is indicated by the arrow in the remote control unit's display.
SLEEP timer operation cannot be combined with ON timer operation.
( Table 13 : Timer Setting )
2. PROGRAM TIMER
Stop mode
Stop mode
Stop mode
Operation mode
Operation mode
Set time Set time Set time Set time
01-09
9-1 WIRELESS REMOTE CONTROLLER
3. SLEEP TIMER
If the sleep is set, the room temperature is monitored and the operation is stopped automatically.
If the operation mode or the set temperature is change after the sleep timer is set, the operation is
continued according to the changed setting of the sleep timer from that time ON.
Set temperature rises
( Ts : Set temperature )
Stop of operation
Set temperature lowers
( Ts : Set temperature )
Ts
Stop of operation
In the cooling operation mode
When the sleep timer is set, the setting temperature is increased 1°C (2°F).
It increases the setting temperature another 1°C (2°F) after 1 hour.
After that, the setting temperature is not changed and the operation is stopped at the time
of timer setting.
Ts
+1°C (2°F)
+2°C (4°F)
Set
60min
In the heating operation mode
When the sleep timer is set, the setting temperature is decreased 1°C (2°F).
It decreases the setting temperature another 1°C (2°F) every 30 minutes.
Upon lowering 4°C (8°F), the setting temperature is not changed and the operation stops at
the time of timer setting.
-4°C (-8°F)
-3°C (-6°F)
-2°C (-4°F)
-1°C (-2°F)
Set
30min
30min
30min
01-10
01-11
The compressor won't enter operation status for 2 minutes and 20 seconds after the compressor is stopped,
even if any operation is given.
At the time when the air conditioner is switched from the cooling mode to heating mode, the
compressor is stopped, and the four-way valve is switched in 2 minutes and 20 seconds later after
the compressor stopped.
10. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST )
11. FOUR-WAY VALVE EXTENSION SELECT
When the power was interrupted by a power failure, etc. during operation, the operation contents
at that time are memorized and when power is recovered, operation is automatically started with
the memorized operation contents.
When the power is interrupted and recovered during timer operation, since the timer operation time
is shifted by the time the power was interrupted, an alarm is given by blinking (7 sec ON/2 sec OFF)
the indoor unit body Timer lamp.
[ Operation contents memorized when the power is interrupted ]
Operation mode
Set temperature
Set air flow
Timer mode and set time
Set air flow Direction
Swing
ECONOMY operation
12. AUTO RESTART
13. MANUAL AUTO OPERATION (Indoor unit body operation)
When the remote control is lost or battery power dissipated, this function will work without the remote control.
When MANUAL AUTO button is set more than 3seconds and less than 10seconds, MANUAL AUTO OPERATION
will be started as shown in Table14.
To stop operation, press the MANUAL AUTO button for 3seconds.
(Table14 : MANUAL AUTO OPERATION)
Press and hold MANUAL AUTO
button for 3 ~ 10seconds
OPERATION MODE Auto changeover
FAN CONT. MODE Auto
TIMER MODE Continuous
SETTING TEMP. 24°C (75°F)
SETTING LOUVER Standard
SWING
ECONOMY
OFF
OFF
(No timer setting available)
Manual auto operation
01-12
14. FORCED COOLING OPERATION (TEST OPERATION)
Forced cooling operation is started when press MANUAL AUTO button for 10 seconds or more.
During the forced cooling operation, it operates regardless of room temperature sensor.
Operation lamp and Timer lamp blink at the same time during the forced cooling operation.
They blink for 1 second ON and 1 second OFF on both Operation lamp and Timer lamp (same as test operation).
Forced cooling operation is released after 60 minutes of starting operation or pressing MANUAL AUTO button
for 3 seconds or pressing START/STOP button on the remote controller.
( Table15 : FORCED COOLING OPERATION )
When FORCED COOLING OPERATION is set, the operation is controlled as shown in Table15.
Forced cooling operation
Cooling
Hi
Horizontal
(It is changed follow as setting of remote controller)
OFF
Room Temp is not controlled
-
-
OPERATION MODE
FAN CONT. MODE
TIMER MODE
SETTING TEMP.
SETTING LOUVER
SWING
ECONOMY
15. COMPRESSOR PREHEATING
16. ECONOMY OPERATION
The ECONOMY operation functions by pressing ECONOMY button on the remote controller.
At the maximum output, ECONOMY Operation is approximately 70% of normal air conditioner operation
for cooling and heating.
The ECONOMY operation is almost the same operation as below settings.
( Table 16 )
When the outdoor heat exchanger temperature is lower than 5°C and the all operation has
been stopped for 30 minutes, power is applied to the compressor and the compressor is heated.
(By heating the compressor, warm air is quickly discharged when operation is started.)
When operation was started, and when the outdoor temperature rises to 7°C (44.6°F) or greater,
preheating is ended.
17. POWERFUL OPERATION
The POWERFUL OPERATION functions by pressing POWERFUL button on the remote controller.
The indoor unit & outdoor unit will operate at maximum power as shown in Table17.
Release Condition is as follows.
[Cooling / Dry]
- Room temperature < Setting temperature - 1.5°C (-3°F) or Operation time has passed 20 minutes.
COMPRESSOR FREQUENCY Maximum
FAN CONT. MODE Powerful
SETTING LOUVER Cooling/ Dry : 3, Heating : 5
(Table17)
Powerful operation
=
=
[Heating]
- Room temperature > Setting temperature +1.5°C (+3°F) or Operation time has passed 20 minutes.
Mode Cooling/ Dry
Heating
Target temperature Setting temp.+1°C (2°F) Setting temp.-1°C (-2°F)
01-13
18. DEFROST OPERATION CONTROL
1. CONDITION OF STARTING THE DEFROST OPERATION
The defrost operation starts as shown in the following Table 18.
2. CONDITION OF THE DEFROST OPERATION COMPLETION
Release Condition
Outdoor heat exchanger temperature sensor value is higher than +16°C (60.8°F) or
Compressor operation time has passed 15 minutes.
(Table 18 : Condition of starting Defrost Operation)
Defrost operation is released when the conditions become as shown in Table 19.
(Table 19 : Defrost Release Condition)
Integrating defrost
If the compressor continuous operation time is less than 10 minutes,
the OFF number of the compressor is counted.
If any defrost operated, the compressor OFF count is cleared.
Normal defrost
Compressor integrating operation time
Less than 25 minutes More than 25 minutes
Does not operate
Outdoor heat exchanger temp. < -17°C (1.4°F)
(at outside air temp. > -10°C (14°F))
Outdoor heat exchanger temp. < Outside air temp.
- 7°C (-44.6°F)
or Outdoor heat exchanger temp. < - 20°C (-13°F)
(at outside air temp. < -10°C (14°F))
More than 240 minutes
(For continuous operation)
Less than 10 minutes
( For intermittent operation )
Compressor integrating operation time
Outdoor heat exchanger
temperature below -3°C (-6°F)
More than 213 minutes
(For continuous operation)
Outdoor heat exchanger
temperature below -5°C (-10°F)
OFF count of the compressor
40 times
=
=
=
=
01-14
Outdoor fan : OFF
Compressor speed : 0 rps
4-way valve : OFF
Compressor speed : 90rps
3. Defrost Flow Chart
The defrosting shall proceed by the integrating operation time, outdoor temperature
and outdoor heat exchanger temperature as follows.
(Not defrosted for 10 minutes)
Heating operation start : Compressor ON
Outdoor HEX temp.: Over 16°C (60.8°F)
or
Compressor ON time: Maximum 15 minutes
Defrost end
Outdoor HEX temp.
Below - 17°C(1.4°F)
Outdoor HEX temp.
- Outside air temp.
Below - 7°C(-44.6°F)
or
Outdoor HEX temp.
Below - 20°C(-4°F)
Integrating defrost
Defrost Indicator:
[Operation lamp]
7 sec ON / 2 sec OFF
Defrost start
Normal defrost
Outside air temp. > -10°C Outside air temp. < -10°C
=
Compressor
OFF count :
40 times
(Less than 10min.)
Compressor
integrating
operation:
Over 240 min.
Outdoor
heat exchanger
temperature:
Below - 3°C
(26.6°F)
Compressor
integrating
operation:
Over 213 min.
Outdoor
heat exchanger
temperature:
Below - 5°C
(23°F)
Intermittent operation Continuous operation
(14°F)(14°F)
19. OFF DEFROST OPEARTION CONTROL
01-15
1. OFF DEFROST OPERATION CONDITION
When operation stops in the [Heating operation] mode, if frost is adhered to the outdoor unit heat
exchanger, the defrost operation will proceed automatically. In this time, if indoor unit Operation lamp
flashes slowly (7 sec ON / 2 sec OFF), the outdoor unit will allow the heat exchanger to defrost,
and then stop.
OFF Defrost Flow Chart
Heating operation stop
Defrost start
Defrost Indicater:
[Operation lamp]
7 sec ON / 2 sec OFF
Outdoor heat exchanger temperature:
Over 16°C (60.8°F) or
Compressor ON time: Over 15 minutes
Defrost end
2. OFF DEFROST END CONDITION
Release Condition
Outdoor heat exchanger temperature sensor value is higher than
16°C (60.8°F) or Compressor operation time has passed 15 minutes.
In heating operation, the outdoor heat exchanger temperature is less than - 4°C (24.8°F),
compressor continuous operation more than 10 minutes, and
compressor operation integrating time lasts for more than 30 minutes.
Outdoor heat exchanger temperature :
Below - 4°C (24.8°F)
Compressor continuous operation :
Over 10 minutes
Compressor integrating operation :
Over 30 minutes
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