Fujitsu AOU09RL2 User manual

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

01-03

01-04

01-06

01-07

01-08

01-09

01-11

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

03-03

3-2 Thermistor Resistance Values.....................................................................................

3-2-1 INDOOR UNIT....................................................................................................

3-2-2 OUTDOOR UNIT................................................................................................

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.

>Ts+2°C (4°F) ?

COOLING OPERATION

HEATING OPERATION

YES

NO

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

Thermostat remains

in OFF state for 6 minutes or

longer?

System stops

or operation command other than

auto changeover operation?

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

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

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)

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

* 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

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

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

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

(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

Page is loading ...

Fujitsu AOU09RL2 User manual

Fujitsu AOU09RL2 User manual

Related papers

Other documents