Sanyo KHX1252, AHX0952, UHX0752 User Manual

TEST RUN SERVICE MANUAL

R410A Models



Indoor Units

Class 7 9 12 18 24 36 48 X 4-Way Air Discharge Semi-Concealed XHX1252 XHX1852 XHX2452 XHX3652 A 1-Way Air Discharge Semi-Concealed AHX0752 AHX0952 AHX1252 U Concealed-Duct UHX0752 UHX1252 UHX1852 UHX2452 UHX3652 D Concealed-Duct High-Static Pressure DHX3652 DHX4852 T Ceiling-Mounted THX1252 THX1852 THX2452 K Wall-Mounted KHX0752 KHX0952 KHX1252 KHX1852 KHX2452

Outdooe Units

Class 90 140 C ECO-i W-2WA Y CHDX09053 CHDX14053

85464849257000

REFERENCE NO.

SM830157

Check of Density Limit

The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its density will not exceed a set limit.

The refrigerant (R410A), which is used in the air conditioner, is saf e, without the toxicity or combustibility of ammonia, and is not restricted by laws imposed to protect the ozone layer. Ho w ever, since it contains more than air, it poses the risk of suffocation if its density should rise excessively. Suffocation from leakage of refrigerant is almost non-existent. With the recent increase in the number of high density buildings, however, the installation of multi air conditioner systems is on the increase because of the need for effective use of floor space, individual control, energy conservation by curtailing heat and carrying power, etc. Most importantly, the multi air conditioner system is able to replenish a large amount of refrigerant compared to conventional individual air conditioners. If a single unit of the multi air conditioner system is to be installed in a small room, select a suitable model and installation procedure so that if the refrigerant accidentally leaks out, its density does not reach the limit (and in the event of an emergency, measures can be made before injury can occur). In a room where the density may exceed the limit, create an opening with adjacent rooms, or install mechanical ventilation combined with a gas leak detection device. The density is as given below.

Total amount of refrigerant (lbs)

Min. volume of the indoor unit installed room (ft.

Density limit (oz/ft.

)

The density limit of refrigerant which is used in multi air conditioners is 0.3 oz/ft.

(ISO 5149).

NOTE

1.If there are 2 or more refrigerating systems in a single refrigerating device, the amount of refrigerant should be as charged in each independent device.

For the amount of charge in this example:

Outdoor unit

e.g., charged amount (353 oz)

Indoor unit

Room A Room B Room C Room D Room E Room F

e.g., charged amount (529 oz)

The possible amount of leaked refrigerant gas in rooms A, B and C is 353 oz. The possible amount of leaked refrigerant gas in rooms D, E and F is 529 oz.

2. The standards for minimum room volume are as follows.

(1) No partition (shaded portion)

(2) When there is an effective opening with the adjacent

room for ventilation of leaking refrigerant gas (opening without a door, or an opening 0.15% or larger than the respective floor spaces at the top or bottom of the door).

Outdoor unit

Refrigerant tubing

Indoor unit

(3) If an indoor unit is installed in each partitioned room

and the refrigerant tubing is interconnected, the smallest room of course becomes the object. But when mechanical ventilation is installed interlocked with a gas leakage detector in the smallest room where the density limit is exceeded, the volume of the next smallest room becomes the object.

Refrigerant tubing

Outdoor unit

Very small room

Small room

Mechanical ventilation device – Gas leak detector

Medium room

Large room

Indoor unit

3. The minimum indoor floor space compared with the amount of refrigerant is roughly as follows: (When the ceiling is 8.8 ft. high)

ft.

4000 3500 3000 2500 2000 1500

Min. indoor volume

1000

Range below the density limit of

0.3 oz/ft. (countermeasures not needed)

500

0 0

Range above the density limit of

0.3 oz/ft. (countermeasures needed)

400 200 600 800 1000 1200

Total amount of refrigerant

ft.

454 398 341 284 227 170 114

Min. indoor floor area

(when the ceiling is 8.8 ft. high)

Section 1: TEST RUN ..............................................................................................................1-1

1. Test Run ...........................................................................................................1-2

2. Setting of Unit Control PCB .............................................................................1-4

3. Auto Address Setting .......................................................................................1-6

4. Remote Controller Test Run Settings .............................................................1-12

5. Caution for Pump Down .................................................................................1-13

6. Meaning of Alarm Messages .........................................................................1-14

Section 2: REMOTE CONTROL FUNCTIONS ........................................................................2-1

1. Main Operating Functions ................................................................................2-2

2. Wireless Remote Controller .............................................................................2-4

3. Timer Remote Controller (RCS-TM80BG) .....................................................2-15

Section 3: TROUBLE DIAGNOSIS .........................................................................................3-1

1. Contents of Remote Controller Switch Alarm Display ......................................3-2

2. Outdoor Unit Control PCB LED Display ...........................................................3-4

3. W-2WAY ECO-i Alarm Codes ..........................................................................3-5

4. Blinking

Section 4: PCB AND FUNCTIONS .........................................................................................4-1

1. Outdoor Unit Control PCB................................................................................4-2

2. Indoor Unit Control PCB ..................................................................................4-6

(Inspection) Display on the Remote Controller ............................3-22

Section 5: SELF-DIAGNOSIS FUNCTION TABLE .................................................................5-1

1. Self-Diagnosis Function Table ..........................................................................5-2

Section 6: SERVICE CHECKER .............................................................................................6-1

1. Outdoor Unit Maintenance Remote Controller .................................................6-2

iii

Test Run

Contents

1. TEST RUN

1. Test Run ..............................................................................................................................1-2

1. Preparing for Test Run ......................................................................................................1-2

2. Test Run Procedure ..........................................................................................................1-3

2. Setting of Unit Control PCB ...............................................................................................1-4

1. Main Outdoor Unit PCB Setting ........................................................................................1-4

3. Auto Address Setting .........................................................................................................1-6

1. Auto Address Setting ........................................................................................................1-6

4. Remote Controller Test Run Setting ...............................................................................1-12

5. Caution for Pump Down ...................................................................................................1-13

6. Meaning of Alarm Messages ...........................................................................................1-14

1-1

1. T est Run

1. Preparing for Test Run

Before attempting to start the air conditioner, check the fol-

lowing.

(1) All loose matter is removed from the cabinet, especially

steel ﬁ lings, bits of wire, and clips.

(2) The control wiring is correctly connected and all electrical

connections are tight.

(3) The protective spacers for the compressor used for trans-

portation have been removed. If not, remove them now.

(4) The transportation pads for the indoor fan have been

removed. If not, remove them now.

(5) The power has been connected to the unit for at least 5

hours before starting the compressor. The bottom of the compressor should be warm to the touch and the crankcase heater around the feet of the compressor should be hot to the touch.

(6) Both the gas and liquid tube service valves are open. If

not, open them now.

(7) Request that the customer be present for the trial run.

Explain the contents of the instruction manual, then have the customer actually operate the system.

(8) Be sure to give the instruction manual and warranty cer-

tiﬁ cate to the customer.

(9) When replacing the control PCB, be sure to make all the

same settings on the new PCB as were in use before replacement.

The existing EEP ROM is not changed, and is connected

to the new control PCB.

Power mains switch

Balance tube

Liquid tube

Test Run

(Power must be turned ON at least 5 hours before attempting test run)

Gas tube

1-2

1. T est Run

2. Test Run Procedure

Test Run

Unit No. setting switch

(S007)

Unit No. setting switch

(S006)

Unit No. setting switch

(S004 and S005)

(Check the link wiring.)

Unit No. setting switch

(S002 and S003)

When multiple outdoor main units exist, disconnect the terminals extended from the shorted plugs (CN003) at all outdoor main unit

CASE 3B CASE 3A

Is it OK to start the compressors?

Recheck the items to check before the test run.

Have the outdoor sub units been connected?

YES

Set the unit address.

Set the No. of outdoor units.

Set the No. of indoor units.

Are the inter-unit control wires

connected to more than 1 refrigerant

system?

YES

Set the system address.

Alternatively, move the sockets to the OPEN side.

PCBs except for 1.

Is it possible to turn ON the power only

for the 1 refrigerant system where the

test run will be performed?

Will automatic address setting be

performed in Heating mode?

YES

Is it OK to start the compressors?

YES

The unit with the unit

No. set to 1 is the main unit. All other units are sub units.

CASE 1

Note: It is not necessary to remove

the socket that is used to shortcircuit the terminal plugs from the outdoor sub unit PCBs.

CASE 2

Make necessary corrections.

Turn OFF the indoor and

outdoor unit power.

Check the alarm contents.

Items to Check Before the Test Run

1. Turn the remote power switch on at least 5 hours before the test, in order to energize the crankcase heater.

2. After performing the leak inspection, applying vacuum, and performing refrigerant charge for the tubing which is connected on-site, fully open the outdoor unit service valve. However if only one outdoor unit is installed, a balance tube is not used. Therefore, leave the valve fully closed.

3. When replacing the control PCB, be sure that the settings on the new PCB match those on the old PCB.

4. Use caution when making the settings. If there are duplicated system addresses, or if the settings for the Nos. of the indoor units are not consistent, an alarm will occur and the system will not start.

5. These settings are not made on the indoor unit PCB.

Turn ON the indoor and

outdoor unit power for that

refrigerant system only.

Short-circuit the automatic address pin (CN100)

on the outdoor main unit PCB for 1 second or

longer, then release it.

LED 1 and 2 blink alternately

(about 2 or 3 minutes).

Turn ON the indoor and

outdoor unit power.

Short-circuit the mode change pin

(CN101) on the outdoor main unit PCB.

At the same time, short-circuit the

automatic address pin (CN100) for 1

second or longer, then release it.

*3 *3

Start indoor and outdoor unit

cooling operation.

LED 1 and 2 blink alternately.

Are LED 1 and 2 on the

outdoor unit PCB OFF?

(Do not allow the short-circuited pins to remain short-circuited.)

Set the wired remote controller for test run.

Refer to the remote

controller test-run

settings.

Does system operate?

Return remote control to normal mode

End test run.

Turn ON the indoor and

outdoor unit power.

Short-circuit the automatic address

pin (CN100) on the outdoor main unit PCB for 1 second or longer,

then release it.

Start indoor and outdoor unit

heating operation.

LED 1 and 2 blink alternately.

YES

Check that test run preparation is OK.

YES

Make necessary

corrections

Turn OFF the indoor

and outdoor unit

Check the alarm

contents.

Check and make corrections according to

"Table of Self-Diagnostic Functions."

Refer to "Table of SelfDiagnostic Functions and Description of Alarm Displays."

*2 A minimum of 5 hours must have passed after the

power was turned ON to the outdoor unit.

*3 All indoor units operate in all refrigerant systems

where the power is ON.

Are LED 1 and 2 on the

outdoor unit PCB OFF?

YES

1-3

2. Setting of Unit Control PCB

1. Main Outdoor Unit PCB Setting

Test Run

CN100

CN101

CN003

S002

S003

S004 S006

S005 S007

1-4

2. Setting of Unit Control PCB

Examples of the No. of indoor units settings (S005, S004)

No. of indoor units

1 unit (factory setting)

11 units

21 units

31 units

40 units

Examples of refrigerant circuit (R.C.) address settings (required when link wiring is used) (S003, S002)

Indoor unit setting (S005)

(3P DIP switch, blue)

All OFF

1 ON

2 ON

3 ON

1 & 3 ON

10 20 30

OFF

System address (S003)

System address No.

System 1 (factory setting)

System 11

System 21

System 30

(2P DIP switch, blue)

10 20

1 ON

2 ON

Both OFF

1 & 2 ON

Indoor unit setting (S004)

(Rotary switch, red)

System address (S002)

(Rotary switch, black)

OFF

Set to 1

Set to 0

Set to 1

Set to 0

Test Run

Examples of the No. of outdoor units settings (S006)

No. of outdoor units

1 unit (factory setting)

2 units

3 units

Address setting of main outdoor unit (S007)

Unit No. setting

Outdoor unit setting (S006)

(3P DIP switch, blue)

1 ON

2 ON

1 & 2 ON

Address setting of outdoor unit (S007)

(3P DIP switch, blue)

Unit No. 1 (main unit)

(factory setting)

Address setting of sub outdoor unit

Unit No. setting

Unit No. 2 (sub unit)

(factory setting)

Unit No. 3 (sub unit)

Address setting of outdoor unit (S007)

(3P DIP switch, blue)

2 ON

1 & 2 ON

21ON3

OFF

OFF ON

OFF

The sub unit control PCB contains the same switches as the main unit control PCB for No. of indoor units, No. of outdoor units, and system address. However it is not necessary to set these switches.

1-5

3. Auto Address Setting

1. Auto Address Setting

Test Run

Basic wiring diagram: Example (1)

• If link wiring is not used (The inter-unit control wires are not connected to multiple refrigerant systems.)

Indoor unit addresses can be set without operating the compressors.

No. 1 (main outdoor unit)

settings

System address

(system 1 setting)

(S003)(S002) ON

No. of outdoor units (3 units setting)

OFF

(S006) (S007)

OFF

Outdoor Unit

Indoor Unit

Remote controller

Case 1

(1) Automatic Address Setting from the Outdoor Unit

1. To set the number of outdoor units, on the outdoor main unit control PCB set the No. of outdoor units DIP switch (S006) to

123

(3 units), and set the unit No. DIP switch (S007) to

OFF

2. On the No. 2 (sub) unit control PCB, set the unit No. switch (S007) to

On the No. 3 (sub) unit control PCB, set the unit No. switch (S007) to

No. of indoor units

(10 units setting)

(S005)

1ON3

Unit number setting (Unit No. 1)

Unit

No. 1

(Main)

1-1

(S004)

OFF

Unit number setting (Unit No. 2)

Leave the socket that is used to short-circuit the terminal plug. (CN003)

Outdoor main/sub control wiring

Inter-unit control wiring

1-2 1-3

No. 2 (sub unit)

(S007)

123

Unit No. 2 (Sub)

Remote controller cross-over wiring

No. 3 (sub unit)

OFF

Unit number setting (Unit No. 3)

(S007)

Unit

No. 3

Outdoor main/sub

(Sub)

control wiring

1-10

(unit No. 1 - main outdoor unit).

(unit No. 2).

(unit No. 3).

123

OFF

3. On the outdoor main unit control PCB, check that the system address rotary switch (S002) is set to “1” and that the DIP

switch (S003) is set to

“0.” (These are the settings at the time of factory shipment.)

OFF

4. To set the number of indoor units that are connected to the outdoor unit to 10, on the outdoor main unit control PCB set the

“1.” and set the rotary switch (S004) to “0.”

OFF

No. of indoor units DIP switch (S005) to

5. Turn ON the power to the indoor and outdoor units.

6. On the outdoor main unit control PCB, short-circuit the automatic address pin (CN100) for 1 second or longer, then release i t.

(Communication for automatic address setting begins.)

* To cancel, again short-circuit the automatic address pin (CN100) for 1 second or longer, then release it. The LED that indicates that automatic address setting is in progress turns OFF and the process is stopped.

Be sure to perform automatic address setting again.

(Automatic address setting is completed when LEDs 1 and 2 on the outdoor main unit control PCB turn OFF.)

7. Operation from the remote controllers is now possible. * To perform automatic address setting from the remote controller, perform steps 1 to 5, then use the remote controller and

complete automatic address setting.

Refer to “Automatic Address Setting from the Remote Controller.”

1-6

3. Auto Address Setting

Basic wiring diagram: Example (2)

Test Run

No. 1 (main outdoor unit) settings

System address

(system 1 setting)

No. of outdoor units (3 units setting)

No. 2 Refrigerant circuit

(S003)(S002)

OFF

(S006)

Outdoor unit

system 1

Indoor unit

Remote

controller

No. of outdoor units (2 units setting)

• If link wiring is used

No. of indoor units

(13 units setting)

(S004)

(S005)

Unit

number setting (unit No. 1)

OFF

Unit

No. 1

(Main)

1-1 1-2

No. 1 (main unit) settings

System address

(system 2 setting)

(S003)(S002)

OFF

(S006)

123

OFF

(S007)

OFF

Leave the socket that is used to short-circuit the terminal plug. (CN003)

No. of indoor units

(9 units setting)

(S004)

(S005)

1ON3

Unit

number setting (unit No. 1)

OFF

* When multiple outdoor main units exist, remove the socket that is

used to short-circuit the terminal plug (CN003) from all outdoor main unit PCBs except for one unit.

Alternatively, move the sockets to the “OPEN” side.

No. 2 (sub unit)

Unit number setting (unit No. 2)

(S007)

123

Unit No. 2 (Sub)

Inter-unit control wiring

1-3 1-13

Remote controller communication wiring

OFF

(S007)

OFF

Unit number setting (unit No. 2)

Unit

OFF

number setting (unit No. 3)

Outdoor main/sub control wiring

No. 2 (sub unit) settings

(S007)

123

OFF

No. 3 (sub unit)

(S007)

Unit No. 3 (Sub)

OFF

Outdoor unit

system 2

Unit

No. 1

(Main)

Move the socket to the

“

OPEN” side

(CN003).

Inter-unit control wiring

To other system link wiring

Indoor unit

Remote

controller

2-1 2-2 2-9

Remote controller cross-over wiring

Make settings as appropriate for the cases listed below.

(Refer to the instructions on the following pages.)

· Indoor and outdoor unit power can be turned ON for each system separately.

· Indoor and outdoor unit power cannot be turned ON for each system separately.

Automatic address setting in Heating mode

Automatic address setting in Cooling mode

1-7

Unit No. 2 (Sub)

Outdoor main/sub control wiring

Case 2

Case 3A Case 3B

3. Auto Address Setting

Case 2 Automatic Address Setting (no compressor operation)

Indoor and outdoor unit power can be turned ON for each system separately.

Indoor unit addresses can be set without operating the compressors.

Automatic Address Setting from Outdoor Unit

1. On the No. 1 (main) unit control PCB, set the unit No. switch (S007) to

On the No. 2 (sub) unit control PCB, set the unit No. switch (S007) to

On the No. 3 (sub) unit control PCB, set the unit No. switch (S007) to

Test Run

(unit No. 1).

(unit No. 2).

(unit No. 3).

2. To set the number of outdoor units on the outdoor main unit control PCB, set the No. of outdoor units DIP switch (S006) to

123

3. On the outdoor main unit control PCB, check that the system address rotary switch (S002) is set to “1” and that the DIP switch (S003) is set to “0”

4. To set the number of indoor units that are connected to the outdoor unit to 13, on the outdoor main unit control PCB set the No. of indoor units DIP switch (S005) to “1”

5. Turn on power to all indoor and outdoor units in the system.

6. Short-circuit the automatic address pin at the outdoor main unit (CN100) for 1 second or longer, then release it.

(Communication for automatic address setting begins.)

(Automatic address setting is completed when LEDs 1 and 2 on the outdoor main unit control PCB turn OFF.)

(3 units).

OFF

* To cancel, again short-circuit the automatic address pin (CN100) for 1 second or longer, then release it. The LED that indicates automatic address setting is in progress turns OFF and the process is stopped. Be

sure to perform automatic address setting again.

. (These are the settings at the time of factory shipment.)

OFF

, and set the rotary switch (S004) to “3.”

OFF

7. Next turn the power ON only for the indoor and outdoor units of the next (different) system. Repeat steps 1 - 5 in the same way to complete automatic address settings for all systems.

8. Operation from the remote controllers is now possible. * To perform automatic address setting from the remote controller, perform steps 1 - 5, then use the remote controller and

complete automatic address setting.

Refer to “Automatic Address Setting from Remote Controller.”

1-8

3. Auto Address Setting

Case 3A Automatic Address Setting in Heating Mode

Indoor and outdoor unit power cannot be turned ON for each system separately.

In the following, automatic setting of indoor unit addresses is not possible if the compressors are not operating. Therefore perform this process only after completing all refrigerant tubing work.

Automatic Address Setting from Outdoor Unit

Test Run

1. Perform steps 1 - 4 in the same way as for

5. Turn the indoor and outdoor unit power ON at all systems.

6. To perform automatic address setting in Heating mode , on the outdoor main unit control PCB in the refrigerant system where you wish to set the addresses, short-circuit the automatic address pin (CN100) for 1 second or longer, then release

it. (Be sure to perform this process for one system at a time. Automatic address settings cannot be performed for more than one system at the same time.)

(Communication for automatic address setting begins, the compressors turn ON, and automatic address setting in Heating

mode begins.) (All indoor units operate.)

* To cancel, again short-circuit the automatic address pin (CN100) for 1 second or longer, then release it. The

LED that indicates automatic address setting is in progress turns OFF and the process is stopped. Be sure to perform automatic address setting again.

(Automatic address setting is completed when the compressors stop and LED 1 and 2 on the main unit control PCB turn

OFF.)

7. At the outdoor main unit in the next (different) system, short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.

(Repeat the same steps to complete automatic address setting for all units.)

8. Operation from the remote controllers is now possible. * To perform automatic address setting from the remote controller, perform steps 1 - 5, then use the remote controller and

to complete automatic address setting.

Case 2

Refer to “Automatic Address Setting from Remote Controller.”

1-9

3. Auto Address Setting

Case 3B Automatic Address Setting in Cooling Mode

Indoor and outdoor unit power cannot be turned ON for each system separately. In the following, automatic setting of indoor

unit addresses is not possible if the compressors are not operating. Therefore perform this process only after completing all refrigerant tubing work. Automatic address setting can be performed during Cooling operation.

Automatic Address Setting from Outdoor Unit

Test Run

1. Perform steps 1 - 4 in the same way as for

5. Turn the indoor and outdoor unit power ON at all systems.

6. To perform automatic address setting in Cooling mode , on the outdoor main unit control PCB in the refrigerant system where you wish to set the addresses, short-circuit the mode change 2P pin (CN101). At the same time, short-circuit the

automatic address pin (CN100) for 1 second or longer, then release it. (Be sure to perform this process for one system at a time. Automatic address settings cannot be performed for more than one system at the same time.)

(Communication for automatic address setting begins, the compressors turn ON, and automatic address setting in Cooling

mode begins.) (All indoor units operate.)

* To cancel, again short-circuit the automatic address pin (CN100) for 1 second or longer, then release it. The

LED that indicates automatic address setting is in progress turns OFF and the process is stopped. Be sure to perform automatic address setting again.

(Automatic address setting is completed when the compressors stop and LED 1 and 2 on the outdoor main unit control PCB

turn OFF.)

7. At the outdoor main unit in the next (different) system, short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.

(Repeat the same steps to complete automatic address setting for all units.)

8. Operation from the remote controllers is now possible. * Automatic address setting in Cooling mode cannot be done from the remote controller.

Case 2

Automatic Address Setting* from the Remote Controller

Selecting each refrigerant system individually for automatic address setting

---Automatic address setting for each system: Item code “A1.”

1. Press the remote controller timer time time.

(Press and hold for 4 seconds or longer.)

2. Next, press either the temperature setting the item code is “A1.”)

3. Use either the matic address setting.

4. Then press the

(Automatic address setting for one refrigerant system begins.) (When automatic address setting for one system is completed, the system returns

to normal stopped status.) <Approximately 4 - 5 minutes is required.>

(During automatic address setting, “NOW SETTING” is displayed on the remote

controller. This message disappears when automatic address setting is completed.)

5. Repeat the same steps to perform automatic address setting for each successive system.

or button to set the system No. to perform auto-

button.

button and button at the same

or button. (Check that

1-10

Test Run

3. Auto Address Setting

Display during automatic address setting

On outdoor main unit PCB

LED

* Do not short-circuit the automatic address setting pin (CN100) again while automatic address setting is in

progress. Doing so will cancel the setting operation and will cause LED 1 and 2 to turn OFF.

Blink alternatel

* When automatic address setting has been successfully completed, both LED 1 and 2 turn OFF. * LED 1 is D72. LED 2 is D75. * If automatic address setting is not completed successfully, refer to the table below and correct the problem. Then perform

automatic address setting again.

Display of LED 1 and 2 on the outdoor unit control PCB

( : ON : Blinking :OFF)

LED1 LED2 Display meaning

After the power is turned ON (and automatic address setting is not in progress), no communication with the indoor units in that system is possible.

After the power is turned ON (and automatic address setting is not in progress), 1 or more indoor units are conﬁ rmed in that system; however, the number of indoor units does not match the number that was set.

Alternating

Simultaneous

Alternating

Note: “ ” indicates that the solenoid is fused or that there is a CT detection current failure (current is detected when the com-

pressor is OFF).

Remote controller display

Automatic address setting is in progress.

Automatic address setting completed. At time of automatic address setting, the number of indoor units did not match the number that was set.

“ ”(when indoor units are operating) indication appears on the display.

Refer to “Table of Self-Diagnostic Functions and Description of Alarm Displays.”

is blinking

1-11

Test Run

3. Auto Address Setting

4. Remote Controller Test Run Settings

Request concerning recording the indoor/outdoor unit combination Nos.

After automatic address setting has been completed, be sure to record them for future reference. List the outdoor main unit system address and the addresses of the indoor units in that system in an easily visible location (next to the nameplate), using a permanent marking pen or similar means that cannot be abraded easily.

Example: (Outdoor) 1 - (Indoor) 1-1, 1-2, 1-3… (Outdoor) 2 - (Indoor) 2-1, 2-2, 2-3… These numbers are necessary for later maintenance. Please be sure to indicate them.

Checking the indoor unit addresses

Use the remote controller to check the indoor unit address.

1. Press and hold the button and button for 4 seconds or longer (simple settings mode).

2. The address is displayed for the indoor unit that is connected to the remote controller.

(Only the address of the indoor unit that is connected to the remote controller can be checked.)

3. Press the

1. Press and hold the button and button for 4 seconds or longer (simple settings mode).

2. “ALL” is displayed on the remote controller.

3. Next, press the

4. The address is displayed for 1 of the indoor units which is connected to the remote controller. Check that the fan of that indoor unit starts and that air is discharged.

5. Press the

6. Press the

button again to return to normal remote controller mode.

button.

button again and check the address of each indoor unit in sequence.

button again to return to normal remote controller mode.

Number changes to indicate which indoor unit is currently selected.

4. Remote Controller Test Run Settings

1. Press the remote controller button for 4 seconds or longer. Then press the button.

“TEST RUN” appears on the LCD display while the test run is in progress. The temperature cannot be adjusted when in Test Run mode. (This mode places a heavy load on the machines. Therefore use it only when performing the test run.)

2. The test run can be performed using the HEAT, COOL, or FAN operation modes. Note: The outdoor units will not operate for approximately 3 minutes after the power is turned ON and after operation is

stopped.

3. If correct operation is not possible, a code is displayed on the remote controller LCD display.

(Refer to “Table of Self-Diagnostic Functions” and correct the problem.)

4. After the test run is completed, press the prevent continuous test runs, this remote controller includes a timer function that cancels the test run after 60 minutes.)

* If the test run is performed using the wired remote controller, operation is possible even if the cassette-type ceiling panel has

not been installed. (“P09” display does not occur.)

button again. Check that “TEST RUN” disappears from the LCD display. (To

1-12

Test Run

5. Caution for Pump Down

Pump down means refrigerant gas in the system is returned to the outdoor unit. Pump down is used when the unit is to be moved, or before servicing the refrigerant circuit.

This outdoor unit cannot collect more

CAUTION

than the rated refrigerant amount as shown by the nameplate on the back.

If the amount of refrigerant is more

than that recommended, do not conduct pump down. In this case use another refrigerant collecting system.

1-13

Test Run

6. Meaning of Alarm Messages

Table of Self-Diagnostics Functions and Description of Alarm Displays

Alarm messages are indicated by the blinking of LED 1 and 2 (D72, D75) on the outdoor unit PCB. They are also displayed on the wired remote controller.

Viewing the LED 1 and 2 (D72 and D75) alarm displays

LED1 LED2 Alarm contents

Alarm Display

Alternating

(

: Blinling) Connect the outdoor maintenance remote controller to the RC socket on the outdoor main unit control PCB (3P,

blue),and check the Alarm Messages on the remote controller display.

Possible cause of malfunction

Serial communication errors Mis-setting

Activation of protective device

Remote controller is detecting error signal from indoor unit.

Indoor unit is detecting error signal from remote controller (and system controller). <<E03>> Indoor unit is detecting error

signal from main outdoor unit.

Improper setting of indoor unit or remote controller.

During auto address setting, number of connected units does not correspond to number set.

When turning on the power supply, number of connected units does not correspond to number set. (Except R.C. address is "0.")

Indoor unit communication error of group control wiring.

Improper setting. This alarm message shows when an indoor unit for multiple-useis not

Protective device in indoor unit is activated.

LED 1 blinks M times, then LED 2 blinks N times. The cycle then repeats.

M = 2: P alarm 3: H alarm 4: E alarm 5: F alarm 6: L alarm N = Alarm No.

Example: LED 1 blinks 2 times, then LED 2 blinks 17 times. The cycle then repeats.

Alarm is "P17".

Error in receiving serial communication signal. (Signal from main indoor unit in case of group control) Ex: Auto address is not completed.

Error in transmitting serial communication signal. <E02>

Error in receiving serial communication signal. When turning on the power supply, the number of connected indoor units does not correspond to the number set. (Except R.C. address is "0.")

Error of the main outddor unit in receiving serial communication signal from the indoor unit.

Indoor unit address setting is duplicated. Remote controller adress connector (RCU. ADR) is duplicated.

(Duplication of main remote controller) Starting auto address setting is prohibited.

This alarm message shows that the auto address connector CN100 is shorted while other RC line is executing auto address operation.

Error in auto address setting. (Number of connected indoor units is less than the number set.)

Error in auto address setting. (Number of connected indoor units is more than the number set.)

No indoor unit is connected during auto address setting. E20 Main outdoor unit is detecting error signal from sub outdoor unit. E24 Error of outdoor unit address setting. E25 The number of connected main and sub outdoor units do not correspond

to the number set at main outdoor unit PCB. Error of sub outdoor unit in receiving serial communication signal from

main outdoor unit. Error of main indoor unit in receiving serial communication signal from

sub indoor units.

connected to the outdoor unit. Duplication of main indoor unit address setting in group control. <L03> Duplication of outdoor R.C. address setting. L04 There are 2 or more indoor unit

controllers that have oparation mode priority in refrigerant circuit.

Group control wiring is connected to individual control indoor unit. L07 Indoor unit address is not set. L08 Capacity code of indoor unit is not set. <<L09>> Capacity code of outdoor unit is not set. L10 Mis-matched connection of outdoor units that have different kinds of

refrigerant. 4-way valve operation failure L18 Thermal protector in indoor unit fan motor is activated. <<P01>> Improper wiring connections of ceiling panel. <<P09>> Float switch is activated. <<P10>> Operation of protective function of fan inverter. P12

sensor (detects low oxygen level) activated. P14

Priority set remote controller L05 Non-priority set remote controller L06

1-14

Alarm

Message

<E01>

E04

<E06>

E08

<<E09>>

E12

E15

E16

E26

E29

E18

L02

L17

Continued

6. Meaning of Alarm Messages

Test Run

Possible cause of malfunction

Activation of protective device

Thermistor fault Indoor thermistor is either open

EEP ROM on indoor unit PCB failure F29 Protective

device for compressor is activated

Protective device in outdoor unit is activated.

or damaged.

Outdoor thermistor is either open or damaged.

Protective device for compressor No.1 is activated.

Protective device for compressor No.2 is activated

Protective device for compressor No.3 is activated.

Low oil level. H07 Oil sensor fault.

(Disconnection, etc.)

Compressor therminal protector is activated. Power supply voltage is unusual. (The voltage is more than 260 V or less than 160 V between L1 and L2 phase.)

Incorrect discharge temperature. (Comp. No. 1) P03 High pressure switch is activated. P04 Negtive (defective) phase. P05 Compressor running failure resulting from missing phase in the

compressor wiring, etc. (Start failure not caused by IPM or no gas.) Incorrect discharge temperature. (Comp. No. 2) P17 Compressor 3 discharge temp. failure P18 Outdoor unit fan motor is unusual. P22 Overcurrent at time of compressor runs more than 80Hz (DCCT

secondary current or ACCT primary current is detected at a time other than when IPM has tripped.)

IPM trip (IPM current or temperature) H31 Inverter for compressor is unusual. (DC compressor does not operate.) P29 Indoor coil temp. sensor (E1) <<F01>> Indoor coil temp. sensor (E2) <<F02>> Indoor coil temp. sensor (E3) <<F03>> Indoor suction air (room) temp. sensor (TA) <<F10>> Indoor discharge air temp. sensor (BL) <<F11>> Comp. No. 1 discharge gas temp. sensor (DISCH1) F04 Comp. No. 2 discharge gas temp. sensor (DISCH2) F05 Outdoor No. 1 coil gas temp. sensor (EXG1) F06 Outdoor No. 1 coil liquid temp. sensor (EXL1) F07 Outdoor air temp. sensor (AIR TEMP) F08 Compressor intake port temperature sensor (RDT) F12 High pressure sensor. Negative (defective) N phase. Low-pressure sensor failure F17 Compressor 3 discharge temp. sensor failure (DISCH3) F22 Outdoor No. 2 coil gas temp. sensor (EXG2) F23 Outdoor No. 2 coil liquid temp. sensor (EXL2) F24

EEP ROM on the main or sub outdoor unit PCB has failed. F31 Current is not detected when comp. No. 1 is ON. H03 Discharge gas temperature of the comp. No. 1 is not detected.

Temp. sensor is not seated at the sensor holder. Overload current is detected. H11 Lock current is detected. H12 Current is not detected when comp. No.2 is ON. H13 Discharge gas temperture of comp. No.2 is not detected. H15 Compressor No.3 current trouble (overcurrent) H21 Compressor No.3 current trouble (locked) H22 Compressor No.3 CT sensor disconnected or short circuit H23 Compressor No.3 discharge temp. sensor disconnected H25 Low pressure switch is activated. H06

Comp. No.1 oil sensor H08 Comp. No.2 oil sensor H27 Oil sensor (connection) failure H28

Alarm

Message

P02

P16

P26

F16

H05

Continued

1-15

6. Meaning of Alarm Messages

Alarm messages displayed on system controller

Serial communication errors Mis-setting

Activation of protective device

NOTE

1. Alarm messages in << >> do not affect other indoor unit operations.

2. Alarm messages in < > sometimes affect other indoor unit operations depending on the fault.

Error in transmitting serial communication signal

Error in receiving serial communication signal

Protective device of sub indoor unit in group control is activated

Indoor or main outdoor unit is not oparating correctly. Mis-wiring of control wiring between indoor unit, main outdoor unit and system controller.

Indoor or main outdoor unit is not operating correctly. Mis-wiring of control wiring between indoor unit, main outdoor unit and system controller.CN1 is not connected properly.

When using wireless remote controller or system controller, in order to check the alarm message in detail, connect wired remote controller to indoor unit temporarily.

Test Run

C05

C06

P30

1-16

Remote Control Functions

Contents

2. REMOTE CONTROL FUNCTIONS

1.Main Operating Functions ..................................................................................................2-2

1. Room Temperature Control ..............................................................................................2-2

2. Automatic Control for Heating and Cooling ......................................................................2-3

2.Wireless Remote Controller ...............................................................................................2-4

1. How to Use the Wireless Remote Controller ....................................................................2-4

2. Receiver ...........................................................................................................................2-7

3. Operation ..........................................................................................................................2-8

4. Using the Wireless Remote Control Unit ..........................................................................2-9

5. Address Settings ............................................................................................................2-10

6. Emergency Operation .....................................................................................................2-12

7. Troubleshooting ..............................................................................................................2-14

3. Timer Remote Controller (RCS-TM80BG) ......................................................................2-15

1. How to Use the Timer Remote Controller .......................................................................2-15

2. Names and Operations ...................................................................................................2-16

3. Installation Manual for Timer Remote Controller ............................................................2-18

4. How to Install the Remote Controller ..............................................................................2-18

5. Group Control Using 2 Remote Controllers ....................................................................2-19

6. Remote Controller Setting Mode ....................................................................................2-19

7. Indoor Unit Setting Mode ................................................................................................2-19

8. To Display the Sensor Temperature ................................................................................2-19

9. To Display the Trouble History ........................................................................................2-19

10. Setting the Present Time ..............................................................................................2-21

11. Weekly Program Function ............................................................................................2-22

12. Outing Function ............................................................................................................2-27

13. Sleeping Function .........................................................................................................2-29

14. Wired Remote Controller Test Run Setting ...................................................................2-30

15. Simple Settings Function ..............................................................................................2-31

16. Detailed Settings Function............................................................................................2-33

17. Remote Controller Servicing Functions ........................................................................2-40

2-1

Remote Control Functions

1. Main Operating Functions

1. Room Temperature Control

The thermostat is turned ON/OFF according to as shown below.

T = Room temperature - Set temperature

When remote controller sensor is used

When body sensor is used Room temperature = Temperature detected by the body sensor - Intake shift temperature*

* Intake shift temperature (enabled only during heating) During heating, a difference in temperature occurs between the top and bottom of a room. This value is set in consideration for

the difference between the temperature detected by the body sensor and the temperature at the bottom of the room.

<Value set for intake shift temperature at time of shipment>: 39°F (4°C)

Note: The shift temperature can be selected in the range of 32 – 50°F (0 – 10°C), by using the remote controller simpliﬁ ed set-

ting mode.

Room temperature = Temperature detected by the remote controller sensor

Cooling

Room temperature

(deg)

+4 +2

Set temperature

–2

Thermostat

(1) After the thermostat turns ON, it will not turn OFF again as a result of for 5 minutes. (2) After the thermostat turns OFF, it will not turn ON again for 3 minutes. (It also will not turn ON for 3 minutes after the power

is switched ON.)

(3) The compressor turns OFF if the mode is changed cooling heating (or heating cooling) while the compressor is ON. (4) If “test run” mode is selected, the thermostat will not turn OFF as a result of for 60 minutes. (The thermostat is forced ON.)

ON ONOFF

Room temperature

Set temperature

Thermostat

(deg)

–2 –4

Heating

ON ONOFF

2-2

Remote Control Functions

1. Main Operating Functions

2. Automatic Control for Heating and Cooling

Automatic Heating/Cooling Control

(1) When operation starts, heating or cooling is selected according to the set temperature and the room temperature.

Room temperature Set temperature – 2F < Room temperature Set temperature + 2F Monitoring mode (*1) Room temperature < Set temperature – 2F Heating

*1: If the difference between the room temperature and set temperature is small when operation starts, the cooling

thermostat remains in standby status (OFF) until the temperature difference increases. When the temperature difference increases, either cooling operation or heating operation is selected. This standby status is known as “monitoring mode.”

(2) After operation starts in the selected operating mode, the set temperature is automatically shifted by + 4°F (2°C) (cooling

operation) or – 4°F (2°C) (heating operation).

Example: Temperature set on the remote controller is 68°F (20°C).

Selected operating mode Shifted set temp. Remote controller display

1 Cooling 72°F 2 Heating 64°F

Set temperature + 2F Cooling

(22°C) (18°C)

68°F 68°F

(20°C) (20°C)

(3) Operating mode changes (heating

changes are handled as shown below.

Heating Cooling

Example: Temperature set on the remote controller is 68°F (20°C).

Operating mode change Shifted set temp.

1 Heating 2 Cooling

*2: During heating operation when the body sensor is used, a temperature shift is applied to the intake temperature

(4) Cooling (heating) operation does not change if the room temperature changes from area C A (or A C) within 10

minutes after the compressor turns OFF. (Monitoring mode is excepted.)

(5) When the heating/cooling change

occurs, the 4-way valve switches approximately 30 to 50 seconds after the compressor turns ON.

cooling: Room temperature Shifted set temperature (set temperature + 4F (2°C)) + 1F (0.5°C) heating: Room temperature Shifted set temperature (set temperature – 4F (2°C)) – 2F (1.0°C)

Cooling 68 + 4 + 1 = 73°F or higher Heating 68 – 4 – 2 = 62°F or lower

detected by the sensor, in consideration for the difference in temperature at the top and bottom of the room. (Refer to the “Room Temperature Control” item.) If this intake shift temperature is 8°F (– 13°C), then the heating change occurs when the temperature detected by the body sensor is 80°F (26.5°C) or higher.

cooling, cooling heating) which occur during operation as a result of temperature

(*2)

cooling

Selected operating mode

Shifted set temp

Remote controller display

Shifted set temp

(20 + 2 + 0.5 = 22.5°C or higher)

(20 – 2 – 1.0=17.0°C or lower)

+6 deg +5 deg +4 deg

+2 deg

–2 deg

–4 deg

Selected operating mode

–6 deg

Thermostat

OFF

Heatin

ONOFF ONOFF ONON OFF

Coolin

OFF

Heatin

2-3

Remote Control Functions

2. Wireless Remote Controller

Optional Controller (Remote Controller) Wireless Remote Controller / RCS-SH80AAB.WL (for X Type) / RCS-TRP80AAB.WL (for A, T Type) / RCS-

BH80AAB.WL (for U, D Type) / RCS - SH1AAB (for K Type)

1. How to Use the Wireless Remote Controller

C: MODE button

E: FAN SPEED selector button

J: TIMER SET button

K: Time setting buttons

L: SET button

M: CL button

P: ACL button

(ALL CLEAR)

NOTE

The illustration above pictures the wireless remote control unit after the cover has been lowered and removed.

B: Transmitter

O: Remote control sensor

A: ON/OFF operation button

D: Temperature setting buttons

I: FLAP button

G: ADDRESS button

F: FILTER button

N: VENTILATION button

H: A/C SENSOR button

Q: Slide switch

A: ON/OFF operation button This button is for turning the air conditioner on and off. B: T ransmitter When you press the buttons on the wireless remote control unit, the

C: MODE button Use this button to select one of the following five operating modes.

(AUTO)

(HEAT)

(DRY)

(COOL)

D: Temperature setting buttons

E: FAN SPEED selector button

(AUTO)

(MED)

display to transmit the setting changes to the receiver in the air conditioner.

: Used to automatically set cooling or heating operation. Only for single heat pump

type

(Temperature range: 62

: Used for normal heating operation. Only for heat pump type

(Temperature range: 60

: Used for dehumidifying without changing the room temperature.

(Temperature range: 64 ~ 86°F (18 to 30°C))

: Used for normal cooling operation.

(Temperature range: 64

(FAN)

(HI)

(LO)

: Used to run the fan only, without heating or cooling operation. ::Press this button to increase the temperature setting.

Press this button to decrease the temperature setting.

: The air conditioner automatically decides the fan speeds. : High fan speed : Medium fan speed : Low fan speed

mark appears in the

80°F (17 to 27°C))

78°F (16 to 26°C))

86°F (18 to 30°C))

Continued

2-4

2. Wireless Remote Controller

Remote Control Functions

F: FILTER button If a separately installed signal receiver is being employed, this button is used to turn off its

G: ADDRESS button When a multiple number of indoor units that can be operated by the wireless remote

NOTE

H: A/C SENSOR button When you press this button (use a narrow-tipped object such as a ballpoint pen), the

NOTE

I: FLAP button 1. Use this button to set the airflow direction to a specific angle.

filter lamp. When the filter lamp has lighted, first clean the filter, and then press the FILTER button to turn off the filter lamp. When a wired remote control unit and wireless remote control unit are both used, the filter sign on the wired remote control unit will appear. When this happens, first clean the filter, and then press the FILTER button on one of the remote control units to turn off the filter sign.

control unit have been installed in the same room with a multi-unit or single-unit installation, this button enables addresses to be set in order to prevent the sending of signals to the wrong indoor unit. Each of up to six indoor units can be controlled separately using its own wireless remote control unit by matching the number of the address switch on the operation area of the indoor unit and the number used for the address of its remote control unit. (The indoor units cannot be controlled separately when they are used in a flexible combination format, simultaneous operation of multi units format or any other such format since they will all operate at the same time.)

When the batteries are replaced, the address setting returns to "ALL", so you must make the setting again.

indication will disappear on the display. The room temperature is detected by the sensor which is built into the indoor unit and the air conditioner is controlled accordingly.

If the remote control is located near a heat source, such as a space heater or in direct sunlight, press the A/C SENSOR button to switch to the sensor on the indoor unit.

The airflow direction is displayed on the remote control unit.

Operation mode

(COOL) or (DRY) (HEAT) or (FAN) (AUTO)

Cooling mode: Heating mode:

Number of airﬂ ow direction settings

3 5

CAUTION

NOTE

(SWEEP) 2. Use this button to make the airflow direction sweep up and down automatically.

In the Cool mode and Dry mode, if the flaps are set in a downward position, condensation may form and drip around the vent. Do not move the flap with your hands.

This function is available only for models X, A, T and K.

Press this button several times until the

To stop the swing operation

Press the FLAP button again during the flap swing operation to stop the flap at the desired position. Then, the airflow can be set from the top position by pressing the FLAP button again.

symbol appears on the display.

2-5

Remote Control Functions

2. Wireless Remote Controller

Indicator when swing operation is stopped

Fan and heating Cooling and dryi

During cooling and drying, the flap does not stop at the downward position. Even if the flap is stopped at the downward position during the swing operation, it does not stop until it moves to the third position from the top.

NOTE

J: TIMER SET button Use this button while the unit is operating to switch between timer settings.

(OFF Timer)

(OFF Cycle Timer)

(ON Timer)

K: Time setting buttons

L: SET button Use this button to set the timer. M: CL button Use this button to clear the timer setting. N: VENTILA TION button This is used when a ventilation fan (available commercially) is connected. Pressing the

O: Remote control sensor This detects the temperature around the remote control unit when the remote control unit

P: ACL button (ALL CLEAR) Puts the wireless remote control unit into pre-operation status. This is used after the batter-

Q: Slide switch This switch is for setting the operation mode of the indoor unit and setting the flaps.

This function is available only for models X, A, T and K.

: The air conditioner stops after a preset time elapses. : The air conditioner always stops after a preset time elapses. : The air conditioner starts after a preset time elapses.

: Press this button to increase the time. : Press this button to decrease the time.

VENTILATION button turns the fan on and off. The ventilation fan also turns on and off when the air conditioner unit is turned on and off. (The display of the remote control unit shows

" while the ventilation fan is running.)

" * If the VENTILATION button is held down for 4 or more seconds when the batteries have

been replaced, "

position has been selected using the sensor button.

ies have been replaced or when the slide switch setting has been changed.

" appears on the display, and the ventilation fan can be used.

NOTE

The wireless remote control unit sends the temperature signal to the air

conditioner regularly at ﬁ ve-minute intervals. If the signal from the wireless remote control unit stops for more than ten minutes due to the loss of the wireless remote control unit or other trouble, the air conditioner will switch to the temperature sensor which is built into the indoor unit and control the room temperature. In these cases, the temperature around the wireless remote control unit may differ from the temperature detected at the air conditioner's position.

When low fan speed is selected and the air conditioner is in cooling opera-

tion at a low outdoor temperature of less than 50°F (10°C), the air conditioner may automatically switch to medium fan speed to prevent freezing.

2-6

Remote Control Functions

2. Wireless Remote Controller

2. Receiver

The signal receivers with the exception of the separately installed signal receiver are mounted on the indoor units.

X type

K type

A: Receiver This section picks up infrared signals from the wireless remote control unit (transmitter). Indication lamps One of these lamps will blink when trouble has occurred. When an indicator lamp starts to

blink, refer to “Troubleshooting” on page 2-14.

T type

Separately installed signal receiver (A, U, D type)

B: Operation lamp This lamp lights when the appliance is turned on. C: Timer lamp This lamp lights when the system is being controlled by the timer. D: Standby lamp • This lamp lights at the following times during heating operations:

When operation has started, when the thermostat has been activated, during a defrosting operation.

• The lamp blinks when trouble has occurred.

E: Emergency operation button

F: ADDRESS switch This switch is used in order to prevent the sending of signals to the wrong indoor unit when

G: SWING button When this button is pressed, the airflow sweeps up and down automatically. H: FILTER lamp This lamp lights to indicate that it is time to clean the filter.

• If two beeps are heard, the operation lamp among the indication lamps has lighted and the timer lamp and standby lamp blink alternately. In cases where heat pump models are used, this indicates a cooling/heating mode mismatch and, as such, operation in the desired mode cannot be performed. (The same beeps will be heard and the same operation lamps will light when auto cooling/heating has been selected on a model which does not have the auto cooling/heating function.)

• When local operation has been set to disable because the centralized control mode is established, for instance, pressing the ON/OFF operation button, MODE button or temperature setting buttons results in the sounding of five beeps, and the attempted change in the operation will not be accepted.

This is used when operation cannot be performed due to trouble with or loss of the wireless remote control unit.

a multiple number of indoor units that can be operated by the wireless remote control units have been installed in the same room.

2-7

2. Wireless Remote Controller

3. Operation

STEP 2

STEP 3

Remote Control Functions

STEP 1, 6

STEP 4

STEP 5

NOTE

STEP 1 To start the air conditioner: Press the operation button (ON/OFF button). STEP 2 Setting the mode: Press the MODE button to select the mode of your choice.

STEP 3 Setting the fan speed: Press the FAN SPEED selector button to select the fan speed of your choice.

STEP 4

STEP 5 Setting the airflow direction: When more than one indoor unit is connected, the UNIT button is used first to

STEP 6 To stop the air conditioner: Press the operation button (ON/OFF button) again. Automatic heating and

cooling

Simultaneous operation of multiple units (Group control)

• To warm up the system, the power mains must be turned on at least five (5) hours before operation.

[ (AUTO), (HEAT), (DRY), (COOL) or (FAN) ]

[ (AUTO), (HI.), (MED.) or (LO.) ] If AUTO is selected, the fan speed switches automatically.

Setting the temperature:

The air conditioner automatically performs heating and cooling operation based on the difference between the temperature setting and room temperature. All indoor units in the same refrigerant system can be operated with a single group control.

Group control is suitable for air conditioning of a large room using multiple air conditioning units.

• One remote control unit can control up to eight indoor units.

• All indoor units have the same settings except for the airflow direction.

• The temperature sensors at the indoor unit side are used.

Use the or button as appropriate to change the temperature setting as desired. ( reduces the temperature, and increases the temperature. ) * The temperature cannot be set during FAN mode operation.

select a unit. Then use the FLAP button to set the airflow direction to a specific angle or to sweep.

Outdoor unit

Remote control unit

2-8

Indoor unit

Signal line

2. Wireless Remote Controller

4. Using the Wireless Remote Control Unit

Slide switch This is used to set the operation mode of the indoor units and to set the flaps.

• Depending on the indoor unit used, the operation display and airflow direction display settings will differ as shown below.

• Use a pointed implement to change the switch position.

• When the switch position has been changed, press the ACL button. * For details on the flap functions, refer to the operating instructions of the indoor unit used.

Remote Control Functions

With the battery cover removed

How to install batteries

How to use the wireless remote control unit

Model which supports different flap settings

Slide switch position

Flap display on wireless remote control unit

Heat pump (with auto

cooling/heating

function)

Operation mode display on wireless remote control unit

Slide switch position

• Before use, check that the slide switch has been set to the position shown in the figure above. For details on how to set the slide switch, consult your dealer.

1. Slide the cover in the direction indicated by the arrow and remove it.

2. Install two AAA alkaline batteries. Make sure the batteries point in the direction marked in the battery compartment.

3. Use a pointed implement to press the ACL button.

• The batteries last about a year, depending on how much you use the wireless remote control unit. Replace the batteries when the wireless remote control unit's display fails to light, or when the remote control cannot be used to change the air conditioner's settings.

• When the batteries are to be replaced, make sure that both batteries are new and that the same kind of battery is used.

• Remove the batteries if the wireless remote control unit is not going to be used for a prolonged period.

• Dispose of the used batteries at the designated location.

• Point the wireless remote control unit's transmitter at the signal receiver. If the signal is received properly, a beep is heard. (Two beeps are heard only when operation starts up.)

• Signals can be received over a distance of approximately 26 ft. This distance is approximate: it may be slightly more or less depending on how much charge remains in the batteries and on other factors.

• Ensure that the signals will not be blocked by any objects positioned between the transmitter and signal receiver.

• Avoid placing the wireless remote control unit where it will be exposed to direct sunlight or in the direct path of the air blown out from the air conditioner, near a heating appliance, etc.

• Do not drop, throw or wash the wireless remote control unit.

• Signal reception may not be accepted in rooms with fluorescent lights that use the electronic instantaneous lighting system (rapid start system) or inverter system. For further details, contact your dealer.

Swing-only model No-flap model

Heat pump (without

auto cooling/heating

function)

Cooling only

ACL button

Cover

2-9

2. Wireless Remote Controller

Remote Control Functions

When mounting the wireless remote control unit on a wall for use

Secure the installation fitting of the wireless remote control unit using the screws.

Installation fitting of wireless remote control unit

Operating tips • D o not operate the wireless remote contr ol unit too far away fr om the signal receiver .

• Before mounting the wireless remote control unit on the wall, place the unit at the mounting position, press the ON/OFF operation button and check that the signals are received properly.

• To remove the wireless remote control unit, disengage it by pulling it toward you.

Doing so may cause operational errors. Make absolutely sure that the wireless remote control unit and signal receiver are both in the same room.

• When operating the wireless remote contr ol unit, point it directl y at the signal receiver.

A beep is heard when a signal is received properly.

• Avoid places where the wireless remote contr ol unit will be obscured by curtains, etc.

Remove it before operation.

Press.

Place here.

Procedure for installing the wireless remote control unit

5. Address Settings

How to check the addresses

How to set the matching address

When a multiple number of indoor units that can be operated by the wireless remote control unit have been installed in the same room with a multi-unit or single-unit installation, this button enables addresses to be set in order to prevent the sending of signals to the wrong indoor unit. Each of up to six indoor units can be controlled separately using its own wireless remote control unit by matching the number of the address switch on the operation area of the indoor unit and the number used for the address of its wireless remote control unit. (The indoor units cannot be controlled separately when they are used in a flexible combination format, simultaneous operation of multi units format or any other such format since they will all operate at the same time.) The signal receiver has an address switch for signal reception, and the wireless remote control unit has an address switch for signal transmission.

When the ADDRESS button on the wireless remote control unit is pressed, the current address appears on the wireless remote control unit's display. The buzzer sounds if the address displayed matches the signal receiver's address. (The buzzer always sounds if “ALL” appears as the address display.) If “ALL” appears as the address display, operations can be performed irrespective of the signal receiver's address. Point the wireless remote control unit at the signal receiver of the unit to be operated, and send the signal.

Wireless remote control units address setting

1. When the ADDRESS button is held down for 4 or more seconds, “ ” lights on the

wireless remote control unit's display, and the current address blinks.

2. Each time the ADDRESS button is now pressed, the address changes by one setting in the following sequence: ALL 1 2 3 6 ALL. Select the setting which matches the setting of the address switch in the operation area of the indoor unit to be operated.

3. When the SET button is now pressed, the address stops blinking and lights instead, and it remains on the display for 5 seconds. The buzzer sounds if the setting matches the setting of the address switch in the operation area of the indoor unit.

NOTE

When the batteries are replaced, the address setting returns to “ALL ”.

2-10

+ 84 hidden pages