TOSHIBA CARRIER RAV-SP180KRT-UL (02) PDF MANUAL

The accessory parts included are:

Other included items are the Owner’s manual and the Installation manual.

Only trained, qualified installers and service mechanics should install, start-up, and service this equipment. Untrained personnel can perform basic maintenance functions such as cleaning coils. All other operations must be performed by trained service personnel.

When working on the equipment, observe precautions in the literature and on tags, stickers, and labels attached to the equipment.

Follow all safety codes. Wear safety glasses and work gloves. Keep quenching cloth and fire extinguisher nearby when brazing. Use care in handling, rigging, and setting bulky equipment.

Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit. Consult local building codes and National Electrical Code (NEC) for special requirements.

Ask an authorized dealer or qualified installation professional to install (including moving)/maintain the air conditioner. Inappropriate installation may result in water leakage, electric shock or fire.

Be sure to connect ground wire (grounding work). Incomplete grounding can cause an electric shock. Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone wires.

Turn off the circuit breaker and leakage breaker before attempting any electrical work. Make sure all circuit breaker and leakage breaker are off. Failure to do so may cause electric shock.

Install the refrigerant pipe securely during the installation work before operating the air conditioner. If the air conditioner is operated with the valve open and without the refrigerant pipe, the compressor sucks air and the refrigeration cycle is over pressurized, which may cause a burst or injury.

When moving the air conditioner for installation into another place, be very careful not to enter any gaseous matter other than the specified refrigerant into the refrigeration cycle. If air or any other gas is mixed in the refrigerant, the gas pressure in the refrigeration cycle becomes abnormally high and it resultingly causes pipe burst and injuries on persons.

Perform installation work properly according to the Installation Manual. Inappropriate installation may result in water leakage, electric shock or fire.

When the air conditioner is installed in a small room, provide appropriate measures to ensure that the concentration of refrigerant leakage in the room does not exceed the critical level.

Install the air conditioner securely in a location where the base can sustain the weight adequately.

Perform the specified installation work to guard against an earthquake. If the air conditioner is not installed appropriately, accidents may occur due to the falling unit.

If refrigerant gas has leaked during the installation work, ventilate the room immediately. If the leaked refrigerant gas comes in contact with fire, noxious gas may generate.

After the installation work, confirm that refrigerant gas does not leak. If refrigerant gas leaks into the room and flows near a fire source, such as a cooking range, noxious gas might generate.

This air conditioner uses the new HFC refrigerant (R410A) which does not destroy the ozone layer.

The characteristics of R410A refrigerant are; easy to absorb water, oxidizing membrane or oil, and its pressure is approx. 1.6 times higher than that of refrigerant R22. Therefore, during installation work, be sure that water, dust, former refrigerant, or refrigerating oil does not enter the refrigerating cycle.

To prevent charging an incorrect refrigerant and refrigerating oil, the sizes of connecting sections of the charging port of the main unit and installation tools are changed from those for the conventional refrigerant. Accordingly, exclusive tools are required for the new refrigerant (R410A).

For connecting pipes, use new and clean piping designed for R410A, and please care so that water or dust does not enter.

The installation fuse must be used for the power supply line of this conditioner.

Tighten the flare nut with a torque wrench in the specified manner. Excessive tightening of the flare nut may cause a crack in the flare nut after a long period, which may result in refrigerant leakage.

Wear heavy gloves and a long sleeve shirt during the installation work to avoid injury.

The air conditioner should be installed at a place strong enough to withstand the weight of the unit.

Do not install the air conditioner in a location subject to a risk of exposure to a combustible gas. If a combustible gas leaks and stays around the unit, a fire may occur.

Upon approval of the customer, install the air conditioner in a place that satisfies the following conditions:

• Place where the unit can be installed horizontally.

• Place where a sufficient servicing space can be ensured for safety maintenance and check.

• Place where drained water will not cause any problem.

Avoid installing in the following places:

• Place exposed to air with high salt content (seaside area), or place exposed to large quantities of sulfide gas (hot spring). (Special protective measures are needed if unit is used in these places.)

• A restaurant kitchen where a lot of oil is used or place near machines in a factory (Oil adhering to the heat exchanger and resin part (cross flow fan) in the indoor unit may reduce the performance, generate mist or dew drop, or deform or damage resin parts.)

• Place where organic solvent is used nearby.

• Place close to a machine generating high frequency.

• Place where the discharged air blows directly into the window of the neighbor house (Outdoor unit).

• Place where noise of the outdoor unit is easily transmitted (Pay due attention to the level of noise when installing outdoor unit on boundary with neighbor).

• Place with poor ventilation.

• Do not use the air conditioner for special purposes such as preserving food, precision instruments, or art objects, or where breeding animals or growing plants are kept (This may degrade the quality of preserved materials).

• Place where any high-frequency appliances (including inverter devices, private power generators, medical equipment, and communication equipment) and inverter-type fluorescent light are installed (A malfunction of the air conditioner, abnormal control, or problems due to noise to such appliances/equipment may occur).

• When the wireless remote controller is used in a room equipped with an inverter-type fluorescent light or at a place exposed to direct sunlight, signals from the remote controller may not be received correctly.

• Place near a door or window exposed to humid outside air (Dew dropping may form).

• Place where special spray is used frequently.

The indoor unit shall be installed so that its top surface comes at a height of 6’7″ (2 m) or more. Also it must be avoided to put anything on top of the indoor unit.

Provide a space as shown for service clearance for the cross flow fan.

A place which provides the spaces around the indoor unit as shown in the installation diagram.

A place where there is no obstacle near the air inlet and outlet.

A place that allows easy installation of the piping to the outdoor unit.

A place which allows the front panel to be opened.

Direct sunlight to the indoor unit’s wireless receiver should be avoided.

The microprocessor in the indoor unit should not be too close to RF (Radio Frequency) noise sources.

Do not put a heavy article on the indoor unit (Even units are packaged).

Carry the indoor unit as it is packaged if possible. If carrying the indoor unit unpacked by necessity, be sure to use buffering cloth, etc. to not damage the unit.

To move the indoor unit, do not apply force to the refrigerant pipe, drain pan, foamed parts, or resin parts, etc.

Carry the package by two or more persons, and do not bundle it with plastic band at positions other than specified.

Considering air discharge direction, select an installation place where discharge air can circulate evenly in a room. Avoid to install the unit at place with “NO GOOD” mark.

1. Decide the hole position for piping at 7.1″ (180 mm) from the arrow mark (⇨) on the installation plate and drill a hole at a slight downward slant toward outdoor side.

2. Pipe hole; dia.2.6″ (65 mm) for SP180 type.

3. Pipe hole; dia.3.1″ (80 mm) for SP240 type.

When drilling a wall that contains a metal lath, wire lath or metal plate, be sure to use a pipe hole brim ring sold separately.

Be sure that the installation plate is fix to the wall with screws to make the indoor unit fit to the wall.

1. Securely fit the installation plate onto the wall by screwing it in the upper and lower parts to hook up the indoor unit.

2. To mount the installation plate on a concrete wall with anchor bolts, utilize the anchor bolt holes as illustrated in the provided figure.

3. Install the installation plate horizontally in the wall.

When installing the installation plate with a mounting screw, do not use the anchor bolt hole. Otherwise the unit may fall down and result in personal injury and property damage.

In case of block, brick, concrete or similar type walls, make 0.2″ (5 mm) dia. holes in the wall. Insert clip anchors for appropriate mounting screws.

Secure four corners and lower parts of the installation plate with 6 mounting screws to install it.

Apply heat-insulation for both refrigerant pipe and drain hose surely so that no dew generates inside of the equipment. (Use polyethylene foam for insulating material.)

1. Remove the front panel for piping connections in the left, bottom left, and rear left directions. Open the air inlet grille upward. Remove the four screws securing the front panel. Slightly open the lower part of the front panel, and then pull the upper part of the front panel toward you to remove it from the rear plate.

2. Die-cutting front panel slit: Cut out the slit on the leftward or right side of the front panel for the left or right connection and the slit on the bottom left or right side of the front panel for the bottom left or right connection with a pair of nippers.

3. Changing drain hose: For leftward connection, bottom-leftward connection and rear leftward connection’s piping, it is necessary to change the drain hose and drain cap. Without changing the drain hose position, the indoor unit will not fit to the wall.

To remove the drain hose, remove the screw securing the drain hose and then pull out the drain hose. Be careful of any sharp edges of steel plate. To install the drain hose, insert the drain hose firmly until the connection part contacts with heat insulator, and secure it with original screw.

To remove the drains cap, clip the drain cap by needle-nose pliers and pull out.

To fix the drains cap: 1) Insert hexagonal wrench (dia. 0.16″ (4 mm)) in a centre head. 2) Firmly insert drains cap. Do not apply lubricating oil (refrigerant machine oil) when inserting the drain cap. Application causes deterioration and drain leakage from the plug.

Firmly insert the drain hose and drain cap; otherwise, water may leak.

To remove the drain hose: 1) Remove the front panel. 2) Remove the screws of drain hose. 3) Pull out the drain hose.

To fix the drain hose: 1) Put the drain hose. 2) Screw the drain hose to the indoor unit. 3) Install the front panel.

In case of right or left piping: After scribing slits of the front panel with a knife or a marking-off pin, cut them with a pair of nippers or an equivalent tool.

In case of bottom right or bottom left piping: After scribing slits of the front panel with a knife or a marking-off pin, cut them with a pair of nippers or an equivalent tool.

Left-hand connection with piping: Bend the connecting pipe so that it is laid within 1.7″ (43 mm) above the wall surface. If the connecting pipe is laid exceeding 1.7″ (43 mm) above the wall surface, the indoor unit may unstably be set on the wall. When bending the connecting pipe, make sure to use a spring bender so as not to crush the pipe. Bend the connection pipe within a radius of 1.2″ (30 mm).

If the pipe is bent incorrectly, the indoor unit may unstably be set on the wall. After passing the connecting pipe through the pipe hole, connect the connecting pipe to the auxiliary pipes and wrap the facing tape around them.

Carefully arrange pipes so that any pipe does not stick out of the rear plate of the indoor unit. Carefully connect the auxiliary pipes and connecting pipes to one another and cut off the insulating tape wound on the connecting pipe to avoid double-taping at the joint, moreover, seal the joint with the vinyl tape, etc. Since dew results in a machine trouble, make sure to insulate both the connecting pipes (Use polyethylene foam as insulating material.). When bending a pipe, carefully do it, not to crush it.

1. Pass the pipe through the hole in the wall, and hook the indoor unit on the installation plate at the upper hooks.

2. Swing the indoor unit to right and left to confirm that it is firmly hooked up on the installation plate.

3. While pressing the indoor unit onto the wall, hook it at the lower part on the installation plate. Pull the indoor unit toward you to confirm that it is firmly hooked up on the installation plate.

For detaching the indoor unit from the installation plate, pull the indoor unit toward you while pushing its bottom up at the specified parts.

The lower part of indoor unit may float, due to the condition of piping and you cannot fix it to the installation plate. In that case, use the screws provided to fix the unit and the installation plate. Especially when the pipes are pulled out from the left side, the unit must be screwed to the installation plate.

1. Run the drain hose sloped downwards. The hole should be made at a slight downward slant on the outdoor side.

2. Put water in the drain pan and make sure that the water is drained out of doors.

3. When connecting extension drain hose, insulate the connecting part of extension drain hose with shield pipe.

Arrange the drain pipe for proper drainage from the unit. Improper drainage can result in dew-dropping.

This air conditioner has the structure designed to drain water collected from dew, which forms on the back of the indoor unit, to the drain pan. Therefore, do not store the power cord and other parts at a height above the drain guide.

1. Use copper pipe with 0.03″ (0.8 mm) or more thickness. (In case pipe size is dia. 5/8″ (15.9 mm), with 0.04″ (1.0 mm) or more.)

2. Flare nut and flare works are also different from those of the conventional refrigerant. Take out the flare nut attached to the main unit of the air conditioner, and use it.

When the refrigerant pipe is long, provide support brackets at intervals of 8’2″ – 9’10” (2.5 – 3 m) to clamp the refrigerant pipe. Otherwise, abnormal sound may be generated.

For piping work, remove dust and moisture from the inside of the connecting pipes. Ensure tight connection between pipes and unit. Evacuate the air in the connecting pipes using a VACUUM PUMP. Check for gas leakage at connected points.

Flaring instructions:

• Cut the pipe with a pipe cutter.

• Remove burrs completely. Remaining burrs may cause gas leakage.

• Insert a flare nut into the pipe, and flare the pipe. As the flaring sizes of R410A differ from those of refrigerant R22, the flare tools newly manufactured for R410A are recommended. However, the conventional tools can be used by adjusting the projection margin of the copper pipe.

The projection margin in flaring (Rigid/Clutch type) is shown in the table below:

The pipe sizes for RAV-SP180KRT-UL and RAV-SP240KRT-UL are:

The flaring diameter size A (Unit: in (mm)) is:

In case of flaring for R410A with the conventional flare tool, pull it out approx. 0.02″ (0.5 mm) more than that for R22 to adjust to the specified flare size. The copper pipe gauge is useful for adjusting projection margin size.

Do not apply excessive torque. Otherwise, the nut may crack depending on the conditions.

The tightening torque for flare pipe connections is:

Pressure of R410A is higher than that of R22 (Approx. 1.6 times). Therefore, using a torque wrench, tighten the flare pipe connecting sections which connect the indoor and outdoor units of the specified tightening torque. Incorrect connections may cause not only a gas leak, but also a trouble of the refrigeration cycle. Align the centres of the connecting pipes and tighten the flare nut as far as possible with your fingers. Then tighten the nut with a spanner and torque wrench as shown in the figure (Work using double spanner).

Tightening with an excessive torque may crack the nut depending on installation conditions. Tighten the nut within the specified tightening torque.

Heat insulation for the pipes should be done separately for the liquid side and gas side. Because both of the liquid and gas side pipes become a low temperature during cooling operation, sufficient heat insulation should be done to prevent condensation. Heat insulator with a heat resistance of 248 °F (120 °C) or more must be used for the gas side pipe. The pipe connection section of the indoor unit must be heat insulated securely and compactly with the attached heat insulator. Fix with vinyl tape.

Using a vacuum pump, perform vacuuming from the charge port of the valve of the outdoor unit. For details, follow to the Installation Manual attached to the outdoor unit. Never use the refrigerant sealed in the outdoor unit for air purge.

For the tools such as charge hose, etc., use those manufactured exclusively for R410A.

For addition of the refrigerant, add refrigerant “R410A” referring to the attached Installation Manual of the outdoor unit. Be sure to use a scale to charge the refrigerant of specified amount.

Charging an excessive or too little amount of refrigerant causes a trouble of the compressor. Be sure to charge the refrigerant of specified amount.

A personnel who charged the refrigerant should write down the pipe length and the added refrigerant amount in the nameplate attached to the service panel of the outdoor unit. It is necessary to troubleshoot the compressor and refrigeration cycle malfunction.

Open the valve of the outdoor unit fully. A 4 mm hexagon wrench is required for opening the valve. For details, refer to the Installation Manual attached to the outdoor unit.

Check with a leak detector or soap water whether gas leaks or not, from the pipe connecting section or cap of the valve.

Use a leak detector manufactured exclusively for HFC refrigerant (R410A, R134a, etc.).

This is for using 2 wireless remote controllers for respective air conditioners when 2 air conditioners are closely installed.

To set up wireless remote controller B:

1. Press the ON/OFF button on the indoor unit to turn the air conditioner ON.

2. Point the wireless remote controller at the indoor unit.

3. Push and hold the CHK button on the wireless remote controller by the tip of the pencil. “00” will be shown on the display.

4. Press the MODE button during pushing CHK. “B” will be shown on the display and “00” will disappear and the air conditioner will turn OFF. The wireless remote controller B is memorized.

To reset a wireless remote controller to be A, repeat the steps above. The wireless remote controllers do not display “A”. The factory default of the wireless remote controllers is “A”.

Electrical work must be performed by a qualified electrician in accordance with the Installation Manual. Make sure the air conditioner uses an exclusive power supply. An insufficient power supply capacity or inappropriate installation may cause fire.

Use the specified wires for wiring and connect the terminals securely fix. To prevent external forces applied to the terminals from affecting the terminals.

Conform to the regulations of the local electric company when wiring the power supply. Inappropriate grounding may cause electric shock.

Appliance shall be installed in accordance with national wiring regulations. Capacity shortage of circuit breaker and leakage breaker or incomplete installation may cause an electric shock or a fire.

If incorrect/incomplete wiring is carried out, it will cause an electrical fire or smoke.

Be sure to install circuit breaker and leakage breaker that are not tripped by shock waves. If circuit breaker and leakage breaker are not installed, an electric shock may be caused.

Be sure to use the cord clamps attached to the product.

Do not damage or scratch the conductive core and inner insulator of Indoor/Outdoor connecting wire when peeling them.

Use the power cord and Inter-connecting wire of specified thickness, type, and protective devices required.

Never connect 208/230 V wired remote controller/central control wiring blocks (U3, A, B, etc.) for control wiring. (Otherwise, the system will fail.)

For Indoor/Outdoor connecting wire, strictly conform to the Local Regulation in each country.

For wiring of power supply of the outdoor units, follow the Installation Manual of each outdoor unit.

Perform the electric wiring so that it does not come to contact with the high-temperature part of the pipe. The coating may melt resulting in an accident.

Connect the wires to the terminal blocks and fix the wires with the cord clamp as no force applys to the wires.

Run the refrigerant piping line and control wiring line in the same line.

Do not turn on the circuit breaker and leakage breaker of the indoor unit until vacuuming of the refrigerant pipes completes.

Wire Quantity x size:

*1: Length of the Indoor/Outdoor unit connecting wires:

Use the same size wire for the outdoor unit power cable and connecting wire between the indoor unit and the outdoor unit when the outdoor unit is RAV-SP180AT2 (2HP).

Use copper supply wires. Use UL wires rated 600 V for the Indoor/Outdoor unit connecting wires. Use UL wires rated 300 V for the remote controller wires.

Be sure to connect the wires matching the terminal numbers. Incorrect connection causes a trouble. The low-voltage circuit is provided for the wired remote controller (Do not connect the high-voltage circuit).

When using the supplied wireless remote controller:

1. Remove the air inlet grille. Open the air inlet grille upward and pull it toward you.

2. Remove the front panel.

3. Remove the terminal cover.

4. Remove the conduit cover.

5. Attach a conduit to the conduit cover with a lock nut.

6. Take the Indoor/Outdoor connecting wire (3 x AWG12) and the ground wire (1 x AWG12) out of the cable slot on the rear panel so that it protrudes about 11.0″ (280 mm) from the conduit cover.

7. Insert the Indoor/Outdoor connecting wire (3 x AWG12 (polar)) fully into the terminal block and secure it tightly with screws. Tightening torque: 0.9 ft lbs (1.2 N·m). Secure the ground wire (1 x AWG12) with the ground screw.

8. Clamp the Indoor/Outdoor connecting wire and the ground wire with the cord clamp.

Be sure to refer to the wiring diagram attached inside the front panel. Check local electrical cords and also any specific wiring instructions and limitations. Beware of the metal plate edge when working on the unit. The edge can be sharp and may cut your hand. Firmly tighten the screws of the terminal block.

Keep the wire length as shown in the provided figure when it is connected to the terminal block.

1. Remove the air inlet grille. Open the air inlet grille upward and pull it toward you.

2. Remove the front panel.

3. Remove the terminal cover and the clamp base.

4. Insert the wired remote controller wire fully into the wired remote controller/central control terminal block, A and B, and secure it tightly with screws. Strip off the wire approx. 0.4″ (9 mm) to connect. Non polarity, 2 core wire is used for wiring of the wired remote controller (2 x AWG20).

5. Clamp the wired remote controller wire with the cord clamp.

6. Install the clamp base with a screw.

7. Remove the conduit cover.

8. Attach a conduit to the conduit cover with a lock nut.

9. Take the Indoor/Outdoor connecting wire (3 x AWG12 (polar)) and the ground wire (1 x AWG12) out of the cable slot on the rear panel so that it protrudes about 11.0″ (280 mm) from the conduit cover.

10. Insert the Indoor/Outdoor connecting wire (3 x AWG12 (polar)) fully into the terminal block and secure it tightly with screws. Tightening torque: 0.12 kgf·m (1.2 N·m). Secure the ground wire (1 x AWG12) with the ground screw.

11. Clamp the Indoor/Outdoor connecting wire with the cord clamp.

12. Attach the conduit cover.

13. Attach the terminal cover, the front panel and the air inlet grille to the indoor unit.

Be sure to refer to the wiring diagram attached inside the front panel. Check local electrical cords and also any specific wiring instructions and limitations. Do not catch the wired remote controller wire when installing the clamp base. Beware of the metal plate edge when working on the unit. The edge can be sharp and may cut your hand. Firmly tighten the screws of the terminal block.

Keep the wire length as shown in the provided figure when it is connected to the terminal block.

Use switch SW01 for the setting.

Place the terminating resistor setting only for the indoor unit with the smallest line address number.

To set the SW01:

1. Remove the front panel. Before removing the front panel, direct the horizontal louver to the direction shown in the figure. Remove the screws securing the front panel, and detach it from the indoor unit.

2. Remove the drain guide and disconnect the ground wire, TCJ sensor, TC sensor, and motor lead (louver motor, fan motor).

3. Remove the screws and detach the electric parts box.

4. Remove the electric parts box cover and set bit1 of SW01 on the board to ON. (Do not touch SW02 as it is used for other setting.)

5. Assemble the removed parts by reversing steps 1 to 4. Insert the sensors and motor lead (louver motor, fan motor) into the original positions.

Connect the sensor and the motor lead certainly back to the previous position. If they are not properly connected, the system will not operate or other errors may occur.

When you use this air conditioner for the first time, it takes approx. 5 minutes until the remote controller becomes available after power-on. This is normal. When power is turned on for the second (or later) time, it takes approx. 1 minute until the remote controller becomes available.

Change the settings while the air conditioner is not working. (Be sure to stop the air conditioner before making settings.)

Normal settings were made as factory default. Change the indoor unit settings as required. Use the wired remote controller to change the settings. The settings cannot be changed using the wireless remote controller, sub remote controller, or remote-controller less system (for central remote controller only). Therefore, install the wired remote controller to change the settings.

Procedure 1:

Push FAN and TEMP. setup buttons simultaneously for at least 4 seconds. After a while, the display flashes. Confirm that the CODE No. is [01]. If the CODE No. is not [01], push TEST button to erase the display content, and repeat the procedure from the beginning. (No operation of the remote controller is accepted for a while after TEST button is pushed.)

According to the installation condition, the lighting time of the filter sign (Notification of filter cleaning) can be changed.

Follow the basic operation procedure (Procedure 1 from applicable controls -> Procedure 2 -> Procedure 3 -> Procedure 4 -> Procedure 5 -> Procedure 6).

For the CODE No. in Procedure 3, specify [01].

For the SET DATA in Procedure 4, select the SET DATA of filter sign lighting time from the following table:

When it is difficult to obtain satisfactory heating due to installation place of the indoor unit or structure of the room, the detection temperature of heating can be raised. Also use a circulator, etc. to circulate heat air near the ceiling.

Follow to the basic operation procedure (Procedure 1 from applicable controls -> Procedure 2 -> Procedure 3 -> Procedure 4 -> Procedure 5 -> Procedure 6).

For the CODE No. in Procedure 3, specify [06].

For the SET DATA in Procedure 4, select the SET DATA of shift value of detection temperature to be set up from the table below:

1. Push SAVE button for at least four seconds when the air conditioner is not working. “SETTING” flashes. Indicates CODE No. “C2.”

2. Select an indoor unit to be set by pushing UNIT LOUVER (left side of the button). Each time you push the button, unit numbers change as follows: UNIT No. 1-1, UNIT No. 1-2, UNIT No. 1-3, UNIT No. 1-4.

3. Adjust the power save setting by pushing TIME buttons. Each push of the button changes the power level by 1% within the range from 100% to 50%. Factory default is 75%.

4. Determine the setting by pushing SET button.

5. Push TEST button to complete the setting.

This function is available to call the service monitor mode from the remote controller during a test run to acquire temperatures of sensors of the remote controller, indoor unit, and outdoor unit.

1. Push TEST and buttons simultaneously for at least 4 seconds to call the service monitor mode. The service monitor indicator lights up and the header indoor unit number is displayed first. CODE No. “00” is also displayed.

2. Pushing TEMP. buttons, select the number of sensor, etc. (CODE No.) to be monitored. (See the Indoor unit data table below.)

3. Pushing UNIT LOUVER (left side of the button), select an indoor unit to be monitored. The sensor temperatures of indoor units and their outdoor unit in the control group are displayed.

4. Push TEST button to return to the normal display.

Indoor unit data:

Outdoor unit data:

Group control is not available with the supplied wireless remote controller. Use the optional wired remote controller.

One remote controller can control a maximum of 8 indoor units as a group.

For wiring procedure and wiring method of the individual line (Identical refrigerant line) system, follow the “Electric work” section. Wiring between lines is performed in the following procedure:

Connect the terminal block (A/B) of the indoor unit connected with a remote controller to the terminal blocks (A/B) of the indoor units of other indoor units by wiring the inter-unit wire of the remote controller.

When the circuit breaker and leakage breaker are turned on, the automatic address setup starts and indicates that the address is being set up by flashing on the display part. During setup of automatic address, the remote controller operation is not accepted.

Required time up to the finish of automatic addressing is approx. 5 minutes.

In some cases, it is necessary to change the address manually after setup of the automatic address according to the system configuration of the group control.

Since all line addresses are set to “1” except for group control by the automatic address setup function after system power-on, change the line addresses for each refrigeration system using the wired remote controller.

Procedure 1:

Push FAN + VENT + RESET buttons simultaneously for 4 seconds or more. After a while, the display part flashes as shown in the provided figure. Check the displayed CODE No. is [01]. If the CODE No. is other than [01], push TEST button to erase the display and repeat procedure from the first step. (After pushing TEST button, operation of the remote controller is not accepted for approx. 1 minute.) (For a group control, No. of the firstly displayed indoor unit becomes the header unit.)

Procedure 2:

Every pushing UNIT LOUVER button, the indoor UNIT No. in the group control is displayed in order. Select the indoor unit of which setup is changed. At this time, the position of the indoor unit of which setup is changed can be confirmed because the fan and louver of the selected indoor unit operate.

Procedure 3:

1. Using TEMP. setup buttons, specify CODE No. [12]. (CODE No. [12]: Line address)

2. Using TIMER TIME buttons, change the line address from [3] to [2].

3. Push SET button. At this time, the setup finishes when the display changes from flashing to lighting. Indoor UNIT No. before setup change is displayed.

Procedure 4:

1. Using TEMP. setup buttons, specify CODE No. [13]. (CODE No. [13]: Indoor address)

2. Using TIMER TIME buttons, change the indoor address from [3] to [2].

3. Push SET button. At this time, the setup finishes when the display changes from flashing to lighting. Indoor UNIT No. before setup change is displayed.

Procedure 5:

1. Using TEMP. setup buttons, specify CODE No. [14]. (CODE No. [14]: Group address)

2. Using TIMER TIME buttons, change the SET DATA from [0001] to [0002]. (SET DATA [Header unit: 0001] [Follower unit: 0002])

3. Push SET button. At this time, the setup finishes when the display changes from flashing to lighting. Indoor UNIT No. before setup change is displayed.

Procedure 6:

If there is other indoor unit to be changed, repeat procedure 2 to 5 to change the setup. When the above setup has finished, push UNIT LOUVER to select the indoor UNIT No. before change of setup, specify CODE No. [12], [13], [14] in order with TEMP. setup buttons, and then check the changed contents.

Address change check Before change: [3-3-1] → After change: [2-2-2].

Pushing SET button clears the contents of which setup was changed. (In this case, procedure from 2 is repeated.) Indoor UNIT No. before setup change is displayed.

Procedure 7:

After check of the changed contents, push TEST button. (Setup is determined.) When pushing TEST button, the display disappears and the status becomes the usual stop status. (When pushing TEST button the operation from the remote controller is not accepted for approx. 1 minute.) If the operation from the remote controller is not accepted even 1 minute or more passed after pushing TEST button, it is considered that the address setup is incorrect. In this case, the automatic address must be again set up. Therefore repeat procedure of the setup change from the Procedure 1.

To recognize the position of the corresponding indoor unit though the indoor UNIT No. is known, check the position during operation stop (Be sure to stop operation of the set).

The line address change/setting procedure for up to the 29th refrigeration system is the same as that described in step 1 on the previous page.

Since all line addresses are set to “1” except for group control by the automatic address setup function after system power-on, change the line addresses for each refrigeration system using the wired remote controller.

Also change the indoor addresses so that they are not duplicated.

For changing/setting line addresses using the wired remote controller, refer to “Manual address setup procedure”.

Line addresses must be unique for each refrigeration system. Set a line address that is different from any of line addresses of other refrigeration systems.

(If indoor units of the SDI series are operated under central control together with those of the SMMS series, set line addresses different from those of the SMMS series.)

Before turning on the circuit breaker and leakage breaker, carry out the following procedure:

1. Using 500V-megger, check that resistance of 1MΩ or more exists between the terminal block of the power supply and the ground (grounding). If resistance of less than 1MΩ is detected, do not run the unit.

2. Check the valve of the outdoor unit being opened fully.

To protect the compressor at activation time, leave power-ON for 12 hours or more before operating.

To execute a test run using the wired remote controller, operate the unit as usual. For the procedure of the operation, refer to the attached Owner’s Manual. A forced test run can be executed in the following procedure even if the operation stops by thermo-OFF. In order to prevent a serial operation, the forced test run is released after 60 minutes have passed and returns to the usual operation.

Do not use the forced test run for cases other than the test run because it applies an excessive load to the devices.

Procedure 1:

Keep TEST button pushed for 4 seconds or more. [TEST] is displayed on the display part and the selection of mode in the test mode is permitted.

Procedure 2:

Push ON/OFF button.

Procedure 3:

Using MODE button, select the operation mode, [COOL] or [HEAT]. Do not run the air conditioner in a mode other than [COOL] or [HEAT]. The temperature controlling function does not work during test run. The detection of error is performed as usual.

Procedure 4:

After the test run, push ON/OFF button to stop a test run. (Display part is same as procedure 1.)

Procedure 5:

Push CHECK button to cancel (release from) the test run mode. ([TEST] disappears on the display and the status returns to a normal.)

For the operation procedure, be sure to follow the Owner’s Manual.

Finish the forced cooling operation in a short time because it applies excessive strength to the air conditioner.

A test operation of forced heating is unavailable. Perform a test operation by heating operation using the wireless remote controller. However heating operation may be not carried out according to the temperature conditions.

To check wiring/piping of indoor and outdoor units:

1. When pushing button for 10 seconds or more, “Pi!” sound is heard and the operation changes to a forced cooling operation. After approx. 3 minutes, a cooling operation starts forcedly. Check cool air starts blowing. If the operation does not start, check wiring again.

2. To stop a test operation, push button once again (Approx. 1 second). The louver closes and the operation stops.

To check transmission of remote controller:

1. Push ON/OFF button of the remote controller to check an operation can also start by the remote controller. “Cooling” operation by the remote controller may be unavailable according to the temperature conditions. Check wiring/piping of the indoor and outdoor units in forced cooling operation.

When a trouble occurred in the air conditioner, the check code and the indoor UNIT No. appear on the display part of the remote controller. The check code is only displayed during the operation. If the display disappears, operate the air conditioner according to the “Confirmation of error history” for confirmation.

Procedure 2:

Every pushing TEMP. button used to set temperature, the trouble history stored in memory is displayed in order. The numbers in CODE No. indicate CODE No. [01] (latest) → [04] (oldest).

Do not push button because all the trouble history of the indoor unit will be deleted.

Procedure 3:

After confirmation, push TEST button to return to the usual display.

When a trouble occurred on the air conditioner, the trouble history can be confirmed with the following procedure. (The trouble history is stored in memory up to 4 troubles.) The history can be confirmed from both operating status and stop status.

Procedure 1:

When pushing MODE and TEST buttons at the same time for 4 seconds or more, the displayed figure appears. If [Service check] is displayed, the mode enters in the trouble history mode. [01: Order of trouble history] is displayed in CODE No. window. [Check code] is displayed in CHECK window. [Indoor unit address in which an error occurred] is displayed in Unit No.

Check codes and corresponding parts to be checked are: