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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)

Function Number

Setting 

Value

Setting Description

35

(For cooling)

36

(For heating)

00

No correction

01

No correction 0.0 °C (0 °F)

02

-0.5 °C (-1 °F)

More 

Cooling 

Less 

Heating

03

-1.0 °C (-2 °F)

04

-1.5 °C (-3 °F)

05

-2.0 °C (-4 °F)

06

-2.5 °C (-5 °F)

07

-3.0 °C (-6 °F)

08

-3.5 °C (-7 °F)

09

-4.0 °C (-8 °F)

10

+0.5 °C (+1 °F)

Less 

Cooling 

More 

Heating

11

+1.0 °C (+2 °F)

12

+1.5 °C (+3 °F)

13

+2.0 °C (+4 °F)

14

+2.5 °C (+5 °F)

15

+3.0 °C (+6 °F)

16

+3.5 °C (+7 °F)

17

+4.0 °C (+8 °F)

Auto restart

Enable or disable automatic restart after a power interruption.

(

...  Factory setting)

Function 

Number

Setting Value

Setting Description

40

00

Enable

01

Disable

*  Auto restart is an emergency function such as for power outage etc. Do not attempt to 

use this function in normal operation. Be sure to operate the unit by remote controller or 
external device.

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 1

01

(Setting forbidden)

02

Forced stop mode

03

Operation/Stop mode 2

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

02

Remote controller

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.

02:  Enable or disable this function by remote controller setting.
* When using a wired remote controller without Indoor unit fan control for energy saving for 

cooling function, or when connecting a single split converter, the setting cannot be made 
by using the remote controller. Set to (00) or (01). 

 To con

fi

 rm if the remote controller has this function, refer to the operating manual of each 

remote controller.

Switching functions for external output terminal

 Functions of the external output terminal can be switched. For details, refer to “12.1. External  
input and output”.

(

...  Factory setting)

Function 

Number

Setting Value

Setting Description

60

00

Operation status

09

Error status

10

Indoor unit fan operation status

12

Set point attainment status

Server room control switching

Switches between normal control and server room control.
To use this function, address setting of the primary unit and secondary unit needs to be done.

(

...  Factory setting)

Function 

Number

Setting Value

Setting Description

96

00

Normal control

01

Server room control (Primary unit)

02

Server room control (Secondary unit)

Setting record

Record any changes to the settings in the following table.

Setting Description

Setting Value

Remote controller address setting
Filter sign
Room temperature control for indoor 
unit sensor

Cooling
Heating

Room temperature control for wired 
remote controller sensor

Cooling
Heating

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
Switching functions for external output terminal
Server room control switching

After completing the function setting, be sure to turn off the power and turn it on again.

9387082050-02_IM.indb   11

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13/3/2018   PM 5:00:26

13/3/2018   PM 5:00:26

Summary of Contents for LMTA Series

Page 1: ...B CAUTION This product is not explosion proof and therefore should not be installed in explosive atmosphere To avoid getting an electric shock never touch the electrical components soon after the power supply has been turned off After turning off the power always wait 5 min utes or more before you touch the electrical components This product contains no user serviceable parts Always consult experi...

Page 2: ... screws 1 set Vinyl tape 1 Sealant 1 2 4 Optional parts Refer to each installation manual for the method of installing optional parts Parts name Model name Application Wired Remote Controller 1 UTY RVN M For air conditioner operation 3 wire type Wired Remote Controller 2 UTY RNR Z For air conditioner operation 2 wire type Wired Remote Controller 2 UTY RLR For air conditioner operation 2 wire type ...

Page 3: ...ote control cable at least 1 m away from a television or radio receivers The purpose of this is to prevent TV reception interference or radio noise Even if they are installed more than 1 m apart you could still receive noise under some signal conditions If children under 10 years old may approach the unit take preventive measures so that they cannot reach the unit Install the indoor unit on the wa...

Page 4: ... Use a hexagonal wrench 4 mm at opposite side to insert the drain cap till the drain cap contacts the tip of the drain cock No gap Hexagonal wrench Drain cock Drain cap CAUTION Insert the drain hose and drain cap into the drain port making sure that it comes in contact with the back of the drain port and then mount it If the drain hose is not connected properly leaking will occur For left piping a...

Page 5: ... nuts could break after a prolonged period causing refrigerant to leak and generate hazardous gas if the refrigerant comes into contact with a flame Connect the piping so that the control box cover can easily be removed for servicing when necessary In order to prevent water from leaking into the control box make sure that the piping is well insulated When the flare nut is tightened properly by you...

Page 6: ... indoor unit to the outdoor unit unless it is specified 8 FINISHING 1 Insulate between pipes Insulate suction and discharge pipes separately For rear right and bottom piping overlap the connection pipe heat insulation and indoor unit pipe heat insulation and bind them with vinyl tape so that there is no gap 2 Temporarily fasten the connection cable along the connection pipe with vinyl tape Wrap to...

Page 7: ...e heat exchanger When installing or removing parts of the air conditioner be sure that the wire is not caught by any parts or pulled hard It may result in damage or malfunction of the air conditioner 4 Remove 10 screws Screws Wire cover Screws 10 places Caps 4 places Wire cover NOTES When replacing the front panel do not scratch or damage the louver 5 The front panel is pulled to the front raising...

Page 8: ...bles to be installed Output voltage Hi DC12V 2V Lo 0V Permissible current 50mA Output select When interlocking with external device Connector CN3 PCB Connected device Relay Locally purchased or When displaying Operation Stop Connector CN3 PCB Connected device Resistor LED Operation behavior If function setting 60 is set to 00 Refer to 16 FUNCTION SETTING 12 1 3 Connection methods Wire modification...

Page 9: ... type Y1Y2 Remote controller cable Remote controller PCB or terminal block for wired remote controller Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4 2 Set the R C address Function setting a 2 wire type Automatic setting Addresses will be automatically set when initially starting up this unit In such a case do not change the R C address of the indoor unit and keep it at the initial settin...

Page 10: ...10 C HEAT button to switch between the left and right digits 2 Press the POWERFUL button to proceed to setting value Press the POWERFUL button again to return to the function number selection 3 Press the TEMP buttons to select the setting value Press the 10 C HEAT button to switch between the left and right digits 4 Press the MODE button once to send the function setting information Please con fir...

Page 11: ... 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 ...

Page 12: ...ror 3 5 Manual auto switch error 4 1 Room temp sensor error 4 2 Indoor unit Heat Ex Middle temp sensor error 5 1 Indoor unit fan motor error 5 3 Drain pump error 5 7 Damper error 5 8 Intake grille error 5 15 Indoor unit error 6 2 Outdoor unit main PCB model information error or communication error 6 3 Inverter error 6 4 Active filter error PFC circuit error 6 5 Trip terminal L error 6 10 Display P...

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