This document is an operation manual for Daikin Room Air Conditioners, specifically models CDKM25VVMG, CDKM35VVMG, CDKM50VVMG, and CDKM60VVMG. It covers safety precautions, parts identification, multi-connection notes, care and cleaning instructions, and troubleshooting.
Function Description:
The Daikin Room Air Conditioner is an inverter-type air conditioning unit designed for cooling indoor spaces. It operates using R32 refrigerant. The system can be configured as a multi-system, connecting one outdoor unit to multiple indoor units, allowing for individual control of each indoor unit while managing overall system operation. The unit features an indoor unit ON/OFF switch for basic operation when the remote controller is unavailable, and an indoor temperature sensor to detect ambient air temperature.
Important Technical Specifications:
- Refrigerant: R32.
- Operation Modes (Multi System): COOL, DRY, and FAN operation can be used simultaneously across different indoor units.
- Operating Conditions (COOL/DRY):
- Outdoor temperature: 10.0-46.0°C
- Indoor temperature: 18.0-32.0°C
- Indoor humidity: 80% max.
- Indoor Unit ON/OFF Switch Default Settings:
- Mode: COOL
- Temperature setting: 22°C
- Airflow rate: AUTO
- Remote Controller Model (Wireless Type): BRC086A12.
Usage Features:
- Indoor Unit Components:
- Air outlet: Where conditioned air is discharged.
- Air inlet: Where room air is drawn in.
- OPERATION lamp (green): Indicates the unit is operating.
- Indoor unit ON/OFF switch: Allows manual start/stop of operation. Press once to start, press again to stop. Useful if the remote controller is missing or out of batteries.
- Indoor temperature sensor: Detects the air temperature around the unit to regulate cooling.
- TIMER lamp (orange): This lamp is not used in these models.
- Receiver: Receives signals from the remote controller.
- Outdoor Unit Components:
- Air inlet (back and side): Where ambient air is drawn in.
- Air outlet: Where heat is expelled.
- Earth terminal (inside): For electrical grounding.
- Model name: Identifies the outdoor unit model.
- Refrigerant pipes and inter-unit wire: Connects indoor and outdoor units.
- Drain hose: Discharges condensed water.
- Multi System Operation:
- Operation Mode Selection: When multiple indoor units are operating, priority is given to the first unit turned on. Subsequent units must be set to the same operation mode or they will enter standby.
- Priority Room Setting: This feature, requiring initial programming, allows a designated "priority room" to take precedence in operation mode selection. For example, if COOL is selected in the priority room, other rooms operating in COOL, DRY, or FAN will maintain their current operation mode. This feature is unavailable when connected with outdoor models MKM50VVMG or MKP50VVMG.
- SUPER POWERFUL Priority: If the priority room enters SUPER POWERFUL operation, cooling capacity is concentrated in that room, potentially reducing efficiency in other rooms.
- OUTDOOR UNIT QUIET Operation Priority: Setting the priority room to QUIET operation initiates OUTDOOR UNIT QUIET operation for the entire system, reducing outdoor unit noise.
- NIGHT QUIET Mode (COOL operation only): Reduces outdoor unit noise during night-time hours. This mode activates when the temperature drops 6°C or more below the day's highest recorded temperature and cancels if the difference becomes less than 4°C. It slightly reduces cooling efficiency and requires initial programming.
Maintenance Features:
- Air Filter Cleaning:
- Removal: For rear suction, pull the bottom side of the air filter backwards over the bends. For bottom suction, pull the filter over the bends at the backside of the unit.
- Cleaning: Remove dust with a vacuum cleaner and rinse gently in cool water. Avoid detergents or hot water to prevent shrinking/deformation. Dry in the shade.
- Replacement: For rear suction, hook the filter behind the flap at the top and push the other side over the bends. For bottom suction, hook the filter behind the flap at the middle and push the other side over the bends. Attach by pushing down on the tabs.
- Caution: Do not operate without filters. Do not remove filters except for cleaning. Do not use petrol, benzine, thinner, polishing compounds, or liquid insecticide. Do not get the indoor unit wet.
- Drain Pan Cleaning: Periodical cleaning by a dealer is recommended to prevent clogging and water leakage.
- General Checks:
- Check the outdoor unit's base, stand, and fittings for decay or corrosion.
- Ensure air inlets and outlets of both indoor and outdoor units are not blocked.
- Verify smooth drainage from the drain hose during COOL or DRY operation. If no drain water is seen, water may be leaking from the indoor unit, requiring dealer consultation.
- Cleaning Air Outlet, Outside Panels, and Remote Controller:
- Clean with a soft cloth.
- For stubborn stains, use water or a neutral detergent.
- Prior to Long Period of Non-Use:
- Operate in FAN mode for several hours on a fine day to dry the inside of the unit.
- Turn off the circuit breaker after operation stops.
- Clean and reattach air filters.
- Remove batteries from the wireless remote controller to prevent leakage.
- Periodical Maintenance: Recommended by a specialist after several seasons of use to prevent poor performance due to internal fouling. Maintenance costs are borne by the user.
Safety Precautions:
- Read the manual carefully before operation.
- Keep the manual accessible.
- Observe all WARNING and CAUTION instructions.
- WARNING: Failure to follow instructions may result in personal injury or loss of life.
- Appliance is filled with R32 refrigerant.
- Do not use means to accelerate defrosting or clean other than recommended.
- Store in a room without continuous ignition sources.
- Do not pierce or burn.
- Refrigerants may not contain an odor.
- Install, operate, and store in a room with minimum required floor area (refer to installation manual for outdoor unit). Maintain installation height of 2.5m or more from the floor surface.
- Do not operate near harmful gases.
- Avoid prolonged direct exposure to cool air.
- Do not place objects (rods, fingers) in air inlet/outlet.
- Do not attempt to repair, dismantle, reinstall, or modify the unit yourself.
- Do not use flammable spray near the unit.
- Use only R32 refrigerant for installation, moving, or repair.
- Do not operate with wet hands.
- In case of refrigerant leakage, do not use the unit until repaired by a qualified service person. Contact with naked flame can generate noxious gas.
- Contact local dealer for installation and maintenance.
- If malfunctioning (e.g., burning odor), turn off power and contact dealer.
- Install an earth leakage circuit breaker.
- CAUTION: Failure to follow instructions may result in property damage or personal injury.
- Earth the unit properly; do not earth to utility pipes, lightning conductors, or telephone earth leads.
- Do not use for cooling precision instruments, food, plants, animals, or artwork.
- Do not expose plants or animals directly to airflow.
- Do not place appliances with naked flames in airflow path.
- Do not block air inlets/outlets.
- Do not sit on, put things on, or pull the outdoor unit.
- Do not place moisture-susceptible objects directly beneath units.
- Check unit stand and mounts for damage after prolonged use.
- Do not touch air inlet or aluminum fins.
- Not intended for use by unattended young children or infirm persons. Supervise children.
- Avoid impacts to units.
- Do not place flammable items (e.g., spray cans) within 1m of air outlet.
- Prevent pets from urinating on the unit.
- Do not wash the unit with water.
- Do not place water containers above the unit.
- Insert batteries with correct polarity.
- Do not use an unstable stand for operation or maintenance.
- Ensure adequate ventilation if a burner is used with the air conditioner.
- Stop operation and turn off circuit breaker before cleaning.
- Connect to specified power supply circuit only.
- Arrange drain hose for smooth drainage.
- Do not place objects in direct proximity of outdoor unit; prevent debris accumulation.
- Do not place objects around the indoor unit.
- Not intended for use by persons with reduced physical, sensory, or mental capabilities, or lack of operation knowledge, unless supervised. Keep out of children's reach.
- For care and cleaning, call service personnel.
- Locate remote controller out of reach of children.
- Precautions for surrounding area:
- Indoor unit at least 1m away from TV/radio.
- Avoid using units in areas prone to high levels of oily smoke.
Troubleshooting:
- Operation does not start soon: Wait about 3 minutes after pressing ON/OFF or reselecting mode (protection feature).
- Air does not come out: If immediately after turning on circuit breaker, unit is preparing (wait 3-20 minutes).
- Outdoor unit emits water: Normal in COOL or DRY mode due to condensation.
- Mist comes out of indoor unit: Normal when room air is cooled into mist by cold airflow.
- Indoor unit gives out odor: Smells from room, furniture, cigarettes absorbed by unit. Recommend professional cleaning.
- Outdoor fan rotates when unit is not operating: For system protection, fan rotates for 30 seconds after operation stops, or starts if outdoor temperature is very high.
- Operation stopped suddenly (OPERATION lamp on): System protection activated by large voltage fluctuation; resumes in about 3 minutes.
- Air conditioner does not operate (OPERATION lamp off): Check circuit breaker/fuse, power failure, remote controller batteries, timer setting.
- Cooling effect is poor: Check air filters, blockages at air inlets/outlets, temperature setting, closed windows/doors, airflow rate/direction.
- Operation stops suddenly (OPERATION lamp blinking): Clean air filters, remove blockages, turn breaker OFF/ON, then try remote controller. If blinking persists, call service shop. Ensure all indoor units in a multi-system are set to the same operation mode.
- Abnormal functioning: Turn breaker OFF/ON and try remote controller (due to lightning or radio waves).
- Call dealer immediately if: Power cord is hot/damaged, abnormal sound, frequent circuit breaker trips, switch/button failure, burning smell, water leaks from indoor unit.
- After power failure: Unit resumes operation automatically in about 3 minutes.
- Lightning: Turn off circuit breaker if lightning risk is present.
- Disposal requirements: Dismantling, refrigerant handling, and parts disposal must comply with local and national regulations.
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