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Room temperature sensor switching

(Only for Wired remote controller)
When using the Wired remote controller temperature sensor, change the setting to “Both” 
(01).

(

...  Factory setting)

Function Number

Setting 

Value

Setting Description

42

00

Indoor unit

01

Both

00: Sensor on the indoor unit is active.
01: Sensors on both indoor unit and wired remote controller are active.
* Remote controller sensor must be turned on by using the remote controller

Remote controller custom code

(Only for wireless remote controller)
The indoor unit custom code can be changed.
Select the appropriate custom code.

(

...  Factory setting)

Function Number

Setting 

Value

Setting Description

44

00

A

01

B

02

C

03

D

External input control

“Operation/Stop” mode or “Forced stop” mode can be selected.

(

...  Factory setting)

Function Number

Setting 

Value

Setting Description

46

00

Operation/Stop mode

01

(Setting prohibited)

02

Forced stop mode

Room temperature sensor switching (Aux.)

To use the temperature sensor on the wired remote controller only, change the setting to 
“Wired remote controller” (01). This function will only work if the function setting 42 is set 
at “Both” (01)

(

...  Factory setting)

Function Number

Setting 

Value

Setting Description

48

00

Both

01

Wired remote controller

Indoor unit fan control for energy saving for cooling

 Enables or disables the power-saving function by controlling the indoor unit fan rotation 
when the outdoor unit is stopped during cooling operation.

(

...  Factory setting)

Function Number

Setting 

Value

Setting Description

49

00

Disable

01

Enable

00: When the outdoor unit is stopped, the indoor unit fan operates continuously following 

the setting on the remote controller.

01: When the outdoor unit is stopped, the indoor unit fan operates intermittently at a very 

low speed.

Setting record

Record any changes to the settings in the following table.

Setting Description

Setting Value

Filter sign

Auto restart

Room temperature sensor switching

Remote controller custom code

External input control

Room temperature sensor switching (Aux.)

Indoor unit fan control for energy saving for cooling

After completing the FUNCTION SETTING, be sure to turn off the power and turn it on 
again.

13.2. 

Temperature correction 

NOTE:

When changing Function 95, perform this setting before other Room temp. control settings 
(Function 30, 31, 92, 93).
If Function 95 is not set 

fi

 rst, Room temperature control settings (Function 30, 31, 92, 93) 

will be reset and you must re-do them again.

Heat Insulation condition (building insulation)

Heat insulation conditions differ according to the installed environment.
Standard insulation “00” allows system to rapidly respond to the cooling or heating load 
changes.
High insulation “01” is when the heat insulation structure of the building is high and does 
not require system to rapidly respond to cooling or heating load changes.
When High insulation “01” is selected;
•  Overheating (overcooling) is prevented at the start-up.
•  All room temp. control settings (Function 30, 31, 92, 93) will reset to No correction [0.0°F 

(0.0°C)].

(

...  Factory setting)

Function Number

Setting 

Value

Setting Description

95

00

Standard insulation

01

High insulation

Room temperature control for indoor unit sensor

Depending on the installed environment, correction of the room temperature sensor may 
be required.
Select the appropriate control setting according to the installed environment.
The temperature correction values show the difference from the Standard setting “00” 
(manufacturer’s recommended value).
*  When Function 95-01(High insulation) is set, the Standard setting “00” will be the same 

as No correction “01” [0.0°F (0.0°C)].

(

...  Factory setting)

Function Number

Setting 

Value

Setting Description

30

(For cooling)

31

(For heating)

00

Standard setting*

01

No correction 0.0°F (0.0°C)

02

-1°F (-0.5°C)

More 

Cooling 

Less 

Heating

03

-2°F (-1.0°C)

04

-3°F (-1.5°C)

05

-4°F (-2.0°C)

06

-5°F (-2.5°C)

07

-6°F (-3.0°C)

08

-7°F (-3.5°C)

09

-8°F (-4.0°C)

10

+1°F (+0.5°C)

Less 

Cooling 

More 

Heating

11

+2°F (+1.0°C)

12

+3°F (+1.5°C)

13

+4°F (+2.0°C)

14

+5°F (+2.5°C)

15

+6°F (+3.0°C)

16

+7°F (+3.5°C)

17

+8°F (+4.0°C)

Room temperature control for wired remote controller sensor

Depending on the installed environment, correction of the wire remote temperature sensor 
may be required.
Select the appropriate control setting according to the installed environment.
To change this setting, set Function 42 to Both “01”.
Ensure that the Thermo Sensor icon is displayed on the remote controller screen.

(

...  Factory setting)

9320456016_IM.indb   10

9320456016_IM.indb   10

12/4/2014   2:21:00 PM

12/4/2014   2:21:00 PM

Summary of Contents for ASU12RLS3

Page 1: ... fingers When Installing In a Ceiling or Wall Make sure the ceiling wall is strong enough to hold the unit s weight It may be necessary to construct a strong wood or metal frame to provide added support In a Room Properly insulate any tubing run inside a room to prevent sweating that can cause drip ping and water damage to walls and floors In an Area with High Winds Securely anchor the outdoor uni...

Page 2: ...ing with conventional refrigerant R22 and for safety Therefore check beforehand The charging port thread diameter for R410A is 1 2 20 UNF Be more careful that foreign matter oil water etc does not enter the piping than with refrigerant R22 models Also when storing the piping securely seal the opening by pinching taping etc When charging the refrigerant take into account the slight change in the co...

Page 3: ...r volatile inflammables such as paint thinner or gasoline If gas leaks and settles around the unit it can cause a fire Area where animals may urinate on the unit or ammonia may be generated Do not use the unit for special purposes such as storing food raising animals grow ing plants or preserving precision devices or art objects It can degrade the quality of the preserved or stored objects Do not ...

Page 4: ...t pipes top Rear piping Indoor unit drain hose bottom No gap Hexagonal wrench Drain cock Drain cap For left outlet piping cut off the piping outlet cutting groove with a hacksaw Indoor unit drain hose Drain cap Remove the drain cap by pull ing at the projection at the end of the cap with pliers etc Removal method of drain hose Remove the screw at the left of drain hose and pull out drain hose Inst...

Page 5: ...ut correctly Tighten the flare nuts with a torque wrench using the specified tightening method Otherwise the flare nuts could break after a prolonged period causing refrigerant to leak and generate hazardous gas if the refrigerant comes into contact with a flame CAUTION Connect the piping so that the control box cover can easily be removed for servicing when necessary In order to prevent water fro...

Page 6: ...erminal screw tightening torques Tightening torque lbf in N m M4 screw 11 to 16 1 2 to 1 8 CAUTION Attach the cable clamp firmly by holding the connection cable and make sure that the clamp is fixed securely Incomplete attachment of the cable clamp might cause a malfunction of the open panel Match the terminal block numbers and connection cable colors with those of the outdoor unit Erroneous wirin...

Page 7: ...roller holder Tapping screw small remote controller mounting Remote controller 2 Push 1 Set Overlap the insulation Vinyl tape Wrap with cloth tape Cloth tape Drain hose Connection cable Pipe Drain hose Drain hose Connection pipe Wall pipe Connection cable Left piping For connection from the left rear Pipe Connection pipe heat insulation Indoor unit pipe heat insulation Bind the pipes together so t...

Page 8: ...ng intake grille and front panel See 9 FRONT PANEL REMOVAL AND INSTALLATION and 9 1 Front panel removal 11 2 2 Removing control cover Screw 2 Control cover Control box Screw 1 Remove the screw 1 and 2 then remove the control cover 11 2 3 Installing relay control board and relay wire terminal Control unit board Connector CN2 Relay wire Notice 2 Clasps Connector CND01 Relay control board Clasp 2 Not...

Page 9: ...es to the function settings used to control the indoor unit according to the installation conditions Incorrect settings can cause the indoor unit to malfunction After the power is turned on perform the FUNCTION SETTING according to the installation conditions using the remote controller The settings may be selected between the following two Function Number or Setting Value Settings will not be cha...

Page 10: ...the FUNCTION SETTING be sure to turn off the power and turn it on again 13 2 Temperature correction NOTE When changing Function 95 perform this setting before other Room temp control settings Function 30 31 92 93 If Function 95 is not set first Room temperature control settings Function 30 31 92 93 will be reset and you must re do them again Heat Insulation condition building insulation Heat insul...

Page 11: ...r to the operating manual 1 Stop the air conditioner operation 2 Press the MODE button and the FAN button simultaneously for 2 seconds or more to start the test run Test run display 3 Press the START STOP button to stop the test run 15 CUSTOMER GUIDANCE Explain the following to the customer in accordance with the operating manual 1 Starting and stopping method operation switching temperature adjus...

Page 12: ...rip detection 9 5 Compressor rotor position detection error 9 7 Outdoor unit fan motor error 9 9 4 way valve error 10 1 Discharge temp error 10 3 Compressor temp error 10 4 High pressure error 10 5 Low pressure error 13 2 Branch boxes error Flexible Multi Display mode 0 5s ON 0 5s OFF 0 1s ON 0 1s OFF Number of flashing Troubleshooting with the indoor unit display OPERATION indicator green TIMER i...

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