Daikin Operation Manual

SAFETY CONSIDERATIONS

We recommend that you read this instruction manual carefully before use to gain full advantage of the functions of the air conditioner and to avoid malfunction due to mishandling. This air conditioner comes under the term "appliances not accessible to the general public".

The precautions described below are WARNING and CAUTION. These are very important precautions concerning safety. Be sure to observe all of them without fail.

• WARNING: These are the matters with possibilities leading to serious consequences such as death or serious injury due to erroneous handling.
• CAUTION: These are the matters with possibilities leading to injury or material damage due to erroneous handling including probabilities leading to serious consequences in some cases.

After reading, keep this manual at a place where any user can read at any time. Furthermore, make certain that this operation manual is handed to a new user if required.

WARNING

• Avoid prolonged exposure of your body to direct streams of cold air. Your physical condition may deteriorate.
• If the air conditioner is in abnormal conditions (smell of something burning, etc.), switch the air conditioner off at the main switch, and contact the dealer where you purchased the air conditioner. Continued operation under such circumstances may result in a failure, electric shock or fire.
• Only use a qualified installer for installation of the air conditioner. Incorrect installation performed may result in a water leakage, electric shock or fire.
• Ask your dealer for improvement, repair, and maintenance. Incorrect improvement, repair, and maintenance may result in a water leakage, electric shock or fire.
• Never remove any fixed covers on the indoor or outdoor unit. Removal of the covers may expose fast moving fan blades or electrical components operating at a hazardous voltage. Contact with the blades or high voltage components may result in injury or electric shock.
• For refrigerant leakage, consult your dealer. If the air conditioner is to be installed in a small room, it is necessary to take proper measures so that the amount of any leaked refrigerant does not exceed the limiting concentration. If the refrigerant leaks exceeding the level of limiting concentration, an oxygen deficiency accident may happen.
• For installation of separately sold component parts, ask a specialist only. Be sure to use separately sold component parts designated by Daikin. Incomplete installation performed by yourself may result in a water leakage, electric shock or fire.
• Ask your dealer to move and reinstall the air conditioner. Incomplete installation may result in a water leakage, electric shock or fire.
• Never insert any objects into the openings in the indoor or outdoor unit. This may damage the product or result in injury to the person inserting the object.

CAUTION

• Do not use the air conditioner for other purposes. Do not use the air conditioner for special applications such as the storage of foods, animals and plants, precision machines, and art objects. Deterioration of quality may result.
• When the air conditioner is used in combination with burners or heaters, ensure sufficient ventilation. Insufficient ventilation may result in an oxygen deficiency accident.
• Regularly check the quality of the foundation blocks. If they are left in a damaged condition, the unit may fall and result in injury.
• Do not place or use a flammable spray can near the air conditioner. Doing so may result in a fire.
• To clean the air conditioner, stop operation and switch the power off at the main switch. Otherwise, an electric shock and injury may result.
• Do not expose the indoor unit or remote controller to rain or moisture. Water or other fluids on the electrical components may result in fire or electric shock.
• Always replace any blown fuse with a fuse of the same specification. The use of the wrong type fuse may allow the electrical wiring to overheat and catch on fire. If the correct type of fuse continues to blow contact your installer or electrician.
• Do not place a burner or heater at a place directly exposed to the wind from the air conditioner. Incomplete combustion of the burner or heater may result.
• This electrical appliance is not intended for use by young children or infirm persons without supervision. Young children should be supervised to ensure that they do not play with the outdoor unit.
• Do not expose animals and plants directly to the air stream from the outdoor unit. Adverse influence to animals and plants may result.
• Do not wash the air conditioner with water. An electric shock may result.
• Do not install the air conditioner at any place where flammable gas may be present. If the gas leaks out and stays around the air conditioner, a fire may break out.
• Execute complete drain piping for perfect drainage. Incomplete piping may result in a water leakage.
• Never operate the air conditioner without the return air filter(s) in place. Operating the unit without the filter(s) will allow dust to enter the indoor unit and build up on the heat exchanger coil and fan motor. This will cause a malfunction of the unit which will not be covered by Warranty.

WHAT TO DO BEFORE OPERATION

This operation manual is for the following systems with standard control. Before initiating operation, contact your Daikin dealer for the operation that corresponds to your system. If your installation has a customized control system (eg zone control) ask your Daikin dealer for the operation that corresponds to your system.

MAIN SWITCH

Ensure that your installer shows you the location of the main power switch of the air conditioning systems. This switch is normally located adjacent to the outdoor unit or in the fuse box / switchboard.

The main switch must be turned on at least 6 hours before the air conditioner is operated to warm up the compressor. Failure to do so may result in damage to the compressor which will not be covered by warranty.

If the air conditioner is not going to be used for an extended period of time or you are going away on holidays, the main switch should be turned off to prevent accidental operation of the air conditioner. Remember that the main switch must be turned back on at least 6 hours before operating the air conditioner.

REMOTE CONTROLLER

Diagram Description: The remote controller features a display screen at the top, followed by several buttons. Numbered elements in the diagram correspond to:

• 1. ON/OFF BUTTON
• 2. OPERATION INDICATOR (RED light)
• 3. CENTRALISED CONTROL INDICATOR "?️"
• 4. HEAT RECLAIM VENTILATION / AIR CLEANING Indicator
• 5. OPERATION DISPLAY (Shows current mode: Fan ?, Dry ?, Auto ?, Cool ❄️, Heat ?)
• 6. INSPECTION / TEST INDICATOR "? TEST"
• 7. PROGRAM TIME INDICATOR (Shows programmed stop/start time ⏰)
• 8. SELECTED TEMPERATURE DISPLAY (Shows desired room temperature, e.g., "27°C")
• 9. FAN SPEED DISPLAY (Shows selected fan speed, e.g., "L" or "H")
• 10. FILTER CLEAN INDICATOR "?"
• 11. DEFROST INDICATOR "?"
• 12. NON FUNCTIONING DISPLAY (Shows "NOT AVAILABLE" if a function is unavailable)
• 13. TIMER MODE START/STOP BUTTON
• 14. PROGRAM TIMER ON / OFF BUTTON
• 15. INSPECTION / TEST OPERATION BUTTON (For technicians only)
• 16. PROGRAM TIME BUTTON (Up ▲ / Down ▼ arrows for timer settings)
• 17. TEMPERATURE SET BUTTON (Up ▲ / Down ▼ arrows for temperature settings)
• 18. FILTER CLEAN RESET BUTTON
• 19. FAN SPEED SELECTOR BUTTON
• 20. OPERATION MODE SELECTOR BUTTON

System Diagram Description: A diagram shows the connection between the Indoor unit and the Outdoor unit. The Indoor unit receives 'Inlet air' and discharges 'Discharged air'. It is connected to the Outdoor unit via 'Refrigerant piping, connection electric wire' and a 'Drain pipe'. A 'Remote controller' is also shown, presumably communicating with the Indoor unit. The Outdoor unit model numbers RY71/RZP71 and RY100/125/160 RZP100/125/145 are indicated.

IMPORTANT NOTES ABOUT INSTALLATION

• Ensure the outdoor unit is installed in: a. A place that can sufficiently withstand the weight of the air conditioner with less running noises and vibrations. b. A place where the hot air stream discharged from the air outlet of the outdoor unit and the running noises do not bother your neighbours.
• Ensure that there are no obstacles near the air outlet of the outdoor unit. Obstacles such as plants, boxes, fences, etc. may result in declined performance and increased running noises.
• If abnormal noises occur in use, consult your dealer.
• Ensure the drain piping from the indoor unit is free of blockage. During cooling operation, water should drip from the outlet of the indoor unit's drain piping. If there is no evidence of water from the drain outlet after several hours of cooling it may be that the drain is blocked or the relative humidity is low. If you think the drain is blocked stop the air conditioner and contact your installer.
• Ensure that a separate power supply circuit is provided for this air conditioner. All electrical work is to be carried out by qualified personnel according to local laws and regulations.

FUNCTIONS OF THE REMOTE CONTROLLER

All controls except for the ON / OFF BUTTON are located behind a swing door on the bottom half of the remote controller. To access these controls simply open the door by gently pulling down on the finger grip located on the top right hand edge of the door. To close the door simply swing it back up until it clicks into the closed position.

Once the desired temperature, fan speed and mode of operation have been set there is no need to access the controls behind the door. Basic operation of the air conditioner is simply a matter of pressing the ON / OFF BUTTON.

Please note that the selected temperature, fan speed and mode of operation will always be displayed even when the air conditioner is not operating.

Button Functions:

• 1. ON/OFF BUTTON: Press to start or stop the air conditioner.
• 2. OPERATION INDICATOR: Illuminates (RED ●) when the air conditioner is operating.
• 3. CENTRALISED CONTROL INDICATOR "?️": Indicates the air conditioner is under control from an optional centralised control panel.
• 4. HEAT RECLAIM VENTILATION / AIR CLEANING: Symbol indicates the optional Heat Reclaim Ventilation Unit is operating (for commercial use).
• 5. OPERATION DISPLAY: Shows the current OPERATION MODE (Fan ?, Dry ?, Auto ?, Cool ❄️, Heat ?). For cooling only type, "Auto" and "Heating" are not selectable.
• 6. INSPECTION / TEST INDICATOR "? TEST": Flashes if the TEST / INSPECTION BUTTON has been pressed or if a fault condition has occurred.
• 7. PROGRAM TIME INDICATOR: Shows programmed stop (off) and start (on) time ⏰.
• 8. SELECTED TEMPERATURE DISPLAY: Shows the desired room temperature (e.g., "27°C").
• 9. FAN SPEED DISPLAY: Shows the selected fan speed (e.g., "L" or "H").
• 10. FILTER CLEAN INDICATOR "?": Indicates the indoor return air filter may require cleaning.
• 11. DEFROST INDICATOR "?": Indicates the air conditioner is removing ice build-up on the outdoor unit (Heat Pump model only).
• 12. NON FUNCTIONING DISPLAY: Shows "NOT AVAILABLE" for a few seconds if a function is unavailable.
• 13. TIMER MODE START/STOP BUTTON: Selects timer stop setting (press once) or timer start setting (press twice).
• 14. PROGRAM TIMER ON / OFF BUTTON: Initiates the timer function after entering the desired off/on time.
• 15. INSPECTION / TEST OPERATION BUTTON: For installation or service technicians only.
• 16. PROGRAM TIME BUTTON: Use Up ▲ / Down ▼ arrows to increase or decrease the desired program stop/start time by 1 hour.
• 17. TEMPERATURE SET BUTTON: Use Up ▲ / Down ▼ arrows to increase or decrease the desired room temperature by 1 degree (range 16-32°C).
• 18. FILTER CLEAN RESET BUTTON: Resets the CLEAN FILTER INDICATOR after cleaning the filter.
• 19. FAN SPEED SELECTOR BUTTON: Toggles between high and low fan speed.
• 20. OPERATION MODE SELECTOR BUTTON: Changes the desired mode of operation (Fan ?, Dry ?, Auto ?, Cool ❄️, Heat ?).

NOTE: For explanation purposes, all indications are shown on the display in Fig. 1, which may differ from the actual running situation.

GENERAL OPERATION

COOLING (see Fig. 2)

1. Press the MODE SELECTION BUTTON (20) until the COOL MODE INDICATOR (❄️) is displayed.
2. Select the desired room temperature using the TEMPERATURE SET BUTTON's (17) Up ▲ or Down ▼ arrows (range 16-32°C).
3. Press the ON / OFF BUTTON (1) to start operation. The OPERATION INDICATOR (2) will illuminate (●).
4. Select the desired fan speed using the FAN SPEED SELECTOR BUTTON (19).
5. To turn off the air conditioner, press the ON / OFF BUTTON (1). The OPERATION INDICATOR (2) will turn off.

Notes:

• As the air conditioner incorporates a hot start system, the indoor fan may run at an extra low (or low) speed for a few minutes when first turned on to avoid cold draughts.
• During heating mode, the indoor fan speed may change as the unit switches between selected speed and extra low (or low) when the desired room temperature is reached and the compressor cycles off. This is to avoid cold draughts.
• On some occasions, the indoor fan may continue to run at extra low (or low) speed for approximately one minute after the unit has been switched off. This is normal and helps remove excess heat from the indoor unit heat exchanger.

HEATING (Heat Pump Models Only) (see Fig. 2)

1. Press the MODE SELECTION BUTTON (20) until the HEAT MODE INDICATOR (?) is displayed.
2. Select the desired room temperature using the TEMPERATURE SET BUTTON's (17) Up ▲ or Down ▼ arrows (range 16-32°C).
3. Press the ON / OFF BUTTON (1) to start operation. The OPERATION INDICATOR (2) will illuminate (●).
4. Select the desired fan speed using the FAN SPEED SELECTOR BUTTON (19).
5. To turn off the air conditioner, press the ON / OFF BUTTON (1). The OPERATION INDICATOR (2) will turn off.

AUTOMATIC HEATING / COOLING CHANGEOVER (Heat Pump Models Only) (see Fig. 2)

In this mode, the air conditioner automatically switches between heating and cooling based on the room temperature and set temperature.

1. Press the MODE SELECTION BUTTON (20) until the AUTO MODE INDICATOR (?) is displayed.
2. When AUTO MODE is selected, either the COOL (❄️) or HEAT (?) MODE INDICATOR will also be displayed along with the most recent temperature setting. The air conditioner will measure the room temperature and select the applicable mode (heating or cooling) based on the current and desired room temperature.

PMV Control (for Super Inverter Models only)

When in automatic cool/heat changeover mode, PMV control is activated. By manually adjusting the set temperature over time, the PMV control "learns" and "remembers" these settings and prevailing conditions. When similar conditions occur again, the system automatically controls temperatures based on these learned preferences, saving running costs and increasing comfort.

PROGRAM MODES

PROGRAM DRY MODE (see Fig. 3)

This mode prioritizes reducing humidity over room temperature. It is normally used in very humid environments. The air conditioner will not enter dry mode if the room temperature is below 16°C.

1. Press the MODE SELECTION BUTTON (20) until the DRY MODE INDICATOR (?) is displayed.
2. Press the ON / OFF BUTTON (1) to start operation. The OPERATION INDICATOR (2) will illuminate (●).
3. To turn off the air conditioner, press the ON / OFF BUTTON (1). The OPERATION INDICATOR (2) will turn off.

Note: The SELECTED TEMPERATURE DISPLAY (8) and FAN SPEED DISPLAY (9) will not appear during PROGRAM DRY operation.

FAN MODE (see Fig. 2)

In FAN MODE, only the indoor fan operates; the outdoor unit does not. This mode is useful for circulating air within the building.

1. Press the MODE SELECTION BUTTON (20) until the FAN MODE INDICATOR (?) is displayed.
2. Press the ON / OFF BUTTON (1) to start operation. The OPERATION INDICATOR (2) will illuminate (●).
3. Select the desired fan speed using the FAN SPEED SELECTOR BUTTON (19).
4. To turn off the air conditioner, press the ON / OFF BUTTON (1). The OPERATION INDICATOR (2) will turn off.

Note: The SELECTED TEMPERATURE DISPLAY (8) will not appear during FAN MODE operation.

PROGRAM TIMER

The air conditioner can be programmed to automatically turn on or off in 1-hour increments up to 72 hours in advance. It can also be programmed to turn on for a set time then off, or vice versa, provided the last operation (on or off) is within 72 hours.

PROGRAMMING THE START / STOP TIME (see Fig. 4)

1. Press the TIMER MODE START/STOP BUTTON (13) once to enter the program STOP mode (symbol "O"), or twice to enter the program START mode (symbol "|"). The PROGRAM START/STOP TIME INDICATOR (7) will flash.
2. Select the desired START/STOP TIME by pressing the PROGRAM TIME BUTTON's (16) Up ▲ or Down ▼ arrows until the desired elapsed time is displayed (each press increases/decreases by 1 hour).
3. Once the desired START/STOP TIME is displayed, press the PROGRAM TIMER ON/OFF BUTTON (14). The PROGRAM START or STOP TIME INDICATOR (7) will stop flashing and remain displayed.
4. Operate the air conditioner in the desired mode. The PROGRAM START/STOP TIME INDICATOR (7) will count down towards zero. When zero is reached, the air conditioner will start or stop operating as programmed.

Example: To stop in 3 hours and start again 6 hours later, program a stop time of 3 hours and a start time of 9 hours (3 + 6 hours).

CANCELLING THE START OR STOP TIME

If you change your mind and do not want the automatic start or stop, simply press the PROGRAM TIMER ON/OFF BUTTON (14). The START or STOP TIME INDICATOR will extinguish.

ADVANCED FEATURES

DEFROST FUNCTION (Heat Pump Models only)

During heating at low outside air temperatures, frost can build up on the outdoor unit heat exchanger, reducing airflow and performance. The microprocessor monitors this and activates defrost operation. When defrosting, both indoor and outdoor fans stop, and the DEFROST INDICATOR (?) is displayed on the remote. The unit remains in defrost mode for approximately 4 to 8 minutes (10 min. max.) to allow the heat exchanger to warm up and defrost.

HOT START SYSTEM (Heat Pump Models only)

To prevent cold drafts when the air conditioner turns on in heating mode, a hot start system is used. The indoor unit microprocessor monitors the indoor heat exchanger temperature and operates the indoor fan at a lower speed until the target temperature is reached, at which point the fan switches to the set speed. This system is also used after defrost and when the compressor switches back on after the room temperature has fallen more than 1°C below the selected temperature.

AUTOMATIC RESTART AFTER POWER FAILURE

If the air conditioner is operating during a power failure, it will automatically restart in the same mode when power is restored.

DUAL REMOTE CONTROL OPERATION (Optional)

A second (optional) remote control can be added to control the unit from two different locations (e.g., upstairs and downstairs). The air conditioner obeys the last command entered into either controller. Both controllers display the same information. This feature is not available if the optional set back time clock (BRC15A61) is used.

NOTE: Program Timer setting is not possible from the second (optional) remote controller.

OPTIMUM OPERATION

Observe the following precautions to ensure the system operates efficiently:

• Adjust the room temperature for a comfortable environment. Avoid excessive heating or cooling.
• Prevent direct sunlight from entering a room during cooling operation by using curtains or blinds.
• Keep doors and windows closed. Open doors and windows allow room air to flow out, decreasing cooling and heating effectiveness.
• Never place objects near the air inlet and outlet of the unit. This may retard effectiveness or cause operation to stop.

OPERATION RANGE

If the temperature or humidity is outside the following conditions, safety devices may activate, and the air conditioner may not operate.

DB: Dry bulb temperature
WB: Wet bulb temperature

SELF DIAGNOSIS

In the event of a fault, the microprocessor will diagnose it (where possible), display a unique fault code on the remote controller, and flash the OPERATION INDICATOR (2). If this occurs, note the fault code (e.g., A1) and contact your installer. This code helps the installer/repairer identify the problem.

Diagram Description: A remote controller display shows "INSPECTION display", "UNIT No. 0", "27°C", "H", and "MALFUNCTION CODE". An "INDOOR UNIT No. in which a malfunction occurs" is also indicated.

NOT MALFUNCTION OF THE AIR CONDITIONER

The following symptoms do not indicate that the air conditioner has malfunctioned:

THE SYSTEM DOES NOT OPERATE

• The system does not restart immediately after the ON / OFF button is pressed. If the OPERATION lamp (●) is lit, the system is operating normally. It may not restart immediately due to safety devices preventing overload; it will turn on again automatically after three minutes.
• The system does not restart immediately when the TEMPERATURE SETTING button is returned to its former position after pushing. If the OPERATION lamp (●) is lit, the system is operating normally. It may not restart immediately due to safety devices preventing overload; it will turn on again automatically after three minutes.
• The system does not start when the display shows "?️" (UNDER CENTRALIZED CONTROL) and it flashes for a few seconds after pressing an operation button. This indicates the system is under centralized control and cannot be controlled by the remote controller.
• The system does not start immediately after the power supply is turned on. Wait one minute for the microcomputer to prepare for operation.
• The outdoor unit is stopped. This is because the room temperature has reached the set temperature, and the indoor unit switches to fan operation.

WHITE MIST COMES OUT OF THE OUTDOOR UNIT

• When the system reverts to HEATING OPERATION after DEFROST OPERATION. Moisture generated by DEFROST becomes steam and is discharged.

TROUBLE SHOOTING

If one of the following malfunctions occurs, take the measures shown below and contact your Daikin dealer. The system must be repaired by a qualified service person.

WARNING: When the air conditioner is in abnormal conditions (smell of something burning, etc.), switch off the main switch, and contact your dealer. Continued operation under such circumstances may result in a failure, electric shock, or fire.

• Safety device actuates frequently, or ON/OFF switch does not work properly: Measure: Turn off the main power switch.
• Water leaks from unit: Measure: Stop the operation.
• Display shows "? INSPECTION", "UNIT No.", OPERATION lamp (2) flashes, and "MALFUNCTION CODE" appears: Measure: Notify your Daikin dealer and inform them of the display.

If the system does not operate properly and none of the above malfunctions are evident, investigate according to the following procedures:

1. If the system does not operate at all:
   • Check for a power failure. Wait until power is restored. If power failure occurs during operation, the system automatically restarts immediately after power recovers.
   • Check if the fuse has blown or circuit breaker has tripped. Change the fuse or re-set the circuit breaker.
2. If the system stops operating after operating for a while:
   • Check if the air inlet or outlet of the outdoor or indoor unit is blocked by obstacles. Remove the obstacle and ensure ventilation.
   • Check if the air filter is clogged. Clean the air filter(s) (Refer to MAINTENANCE).
3. The system operates but does not sufficiently cool or heat:
   • Check if the air inlet or outlet of the indoor or outdoor unit is blocked with obstacles. Remove the obstacle and ensure ventilation.
   • Check if the air filter is clogged. Clean the air filter(s) (Refer to MAINTENANCE).
   • Check if the set temperature is not proper (Refer to OPERATION PROCEDURE).
   • Check if the FAN SPEED CONTROL button is set to LOW SPEED (Refer to OPERATION PROCEDURE).
   • Check if doors or windows are open. Shut them to prevent wind from coming in.
   • Check if direct sunlight enters the room (when cooling). Use curtains or blinds.
   • Consider if there are too many occupants in the room (when cooling). Cooling effect decreases if heat gain is too large.
   • Check if the heat source of the room is excessive (when cooling). Cooling effect decreases if heat gain is too large.

USER MAINTENANCE

IMPORTANT!

• NO USER SERVICEABLE PARTS ARE INSIDE THE AIR CONDITIONER. DO NOT REMOVE ANY ACCESS PANELS OR FIXED COVERS.
• Before cleaning, stop operation and turn the power switch off. Otherwise, electric shock and injury may result.
• Do not wash the indoor unit with water. Doing so may result in electric shock.
• Be careful with scaffolds or staging. Exercise caution when working at a high place.

CLEANING THE AIR FILTER(S)

• Always clean the air filter(s) before use at the beginning of summer and winter. Dirt and dust caught in the filter cause a drop in airflow and performance.
• If used in a location where dirt accumulates easily, clean the filter(s) more frequently, recommended once every 2 weeks.

NOTE: The air filter(s) and suction grille(s) are supplied by your dealer. Ask your DAIKIN dealer how to clean them.

HOW TO CLEAN AIR OUTLET GRILLE

• Clean with a soft cloth.
• For difficult stains, use water or a neutral detergent.

NOTE: Do not use gasoline, benzene, thinner, polishing powder, or liquid insecticide, as it may cause discoloring or warping. Do not let the indoor unit get wet, as it may cause electric shock or fire.

MAINTENANCE OF THE OUTDOOR UNIT

• Regularly inspect the outdoor unit to ensure the heat exchanger coil (aluminium fins) and fan outlet are not obstructed by vegetation or other foreign objects.
• Clean the outdoor unit heat exchanger coil annually or as required by location or outdoor air quality. Spray the fins with low-pressure water downwards (simulating heavy rain). Alternatively, have this work done by your installer.
• Regularly check the paint work of the outdoor unit for scratches or signs of corrosion. Apply touch-up or anti-corrosion paint as necessary.

START UP AFTER A LONG STOP

Confirm the following:

• Check that the air inlet and outlet are not blocked. Remove any obstacles.
• Clean the air filter(s) and outside grille. Ensure the air filter is reattached after cleaning.
• Turn on the main power supply switch. The display on the remote controller will be shown when power is on.
• To protect the unit, turn on the main power switch at least 6 hours before operation.

WHAT TO DO WHEN STOPPING THE SYSTEM FOR A LONG PERIOD

• Turn on FAN OPERATION for a half day to dry the unit (Refer to "FAN OPERATION").
• Cut off the power supply. When the main power switch is on, some power is used even if the system is not operating. Turn off the main power supply switch for energy saving. The display on the remote controller will vanish when the main power switch is turned off.