Daikin FFQ09W2VJU9 - User Manual

Questions and Answers

K
Kelly RiveraAug 6, 2025
How to fix Daikin Air Conditioner if operation does not start soon?
- H
  Howard McguireAug 6, 2025
  If the operation of your Daikin Air Conditioner does not start soon, you should wait for about 3 minutes.
G
George WheelerAug 12, 2025
How to get rid of odor from Daikin Air Conditioner indoor unit?
- A
  alexandrawheelerAug 12, 2025
  If your Daikin Air Conditioner indoor unit gives out an odor, it's recommended to have the indoor unit cleaned by a technician. Consult the dealer where you bought the air conditioner.
P
Paul OdonnellAug 19, 2025
Why does mist come out of my Daikin Air Conditioner indoor unit?
- S
  Sierra HenryAug 19, 2025
  This situation can occur when the air in the room is cooled into mist by the cold airflow during cooling operation of your Daikin Air Conditioner.
K
Kenneth ReyesAug 25, 2025
What to do if the HEAT operation of Daikin Air Conditioner stops suddenly and a flowing sound is heard?
- J
  John RiosAug 25, 2025
  If the HEAT operation of your Daikin Air Conditioner stops suddenly and you hear a flowing sound, you should wait for about 4 to 12 minutes.
J
juliajohnsonAug 31, 2025
What to do if Daikin Air Conditioner operation stopped suddenly but the OPERATION lamp is on?
- M
  Mrs. Amanda HarrisonAug 31, 2025
  If your Daikin Air Conditioner operation stopped suddenly, but the OPERATION lamp is on, the unit will automatically resume operation in about 3 minutes. If it doesn't, try setting all indoor units to the same operation mode.

Summary

Safety Considerations

Safety Symbols and Meanings

Defines DANGER, WARNING, CAUTION, and NOTE symbols for hazard identification.

Names of Parts

Indoor Unit Parts

Identifies and labels key components of the indoor air conditioning unit.

Remote Controller Overview

Illustrates and names the components of wired and wireless remote controllers.

Outdoor Unit Parts

Details and labels the external parts of the outdoor unit.

Multi Connection

Multi System Operation Note

Explains operation of a multi system with one outdoor unit connected to multiple indoor units.

COOL;HEAT Mode Lock

Describes function to fix operation mode to COOL or HEAT for all connected indoor units.

Priority Room Setting

Details how a priority room influences operation mode of other units in a multi system.

Care

Care and Cleaning

Provides instructions for cleaning the air conditioner's parts, including panels, filters, and grilles.

Long Period Non-Use Preparation

Outlines steps for unit preparation during extended inactivity.

Periodic Maintenance Recommendation

Advises on benefits of professional periodic maintenance for optimal performance.

Troubleshooting

Troubleshooting Common Issues

Provides a guide to identify and resolve common operational problems.

Operating Condition Notes

Lists specific operating conditions and potential issues like dew formation or abnormal functioning.

Immediate Dealer Contact

Lists critical symptoms requiring immediate attention and contact with the dealer.

Post Power Failure

Advises on actions after a power outage, including system resume behavior.

Lightning Safety

Provides guidance on protecting the system during potential lightning strikes.

Disposal Requirements

Details regulations for dismantling and disposing of unit components and refrigerants.

This document is an operation manual for Daikin room air conditioners, specifically models FFQ09W2VJU9, FFQ12W2VJU9, FFQ15W2VJU9, and FFQ18W2VJU9. It provides essential information for safe and effective use, maintenance, and troubleshooting of these inverter-type units, which are designed to provide year-round comfort.

Function Description:

The Daikin room air conditioner is an inverter-type system designed for comfort cooling and heating in various indoor environments. It comprises an indoor unit, an outdoor unit, and a remote controller (either wired or wireless) for operation. The inverter technology allows for precise temperature control and energy efficiency by adjusting the compressor speed. The system is capable of multi-connection, meaning one outdoor unit can be connected to multiple indoor units, allowing for individualized comfort control in different rooms. The manual highlights specific operational modes and features tailored for multi-system setups, such as "Priority room setting" and "NIGHT QUIET mode." The "NIGHT QUIET mode" is designed to reduce outdoor unit noise during nighttime hours, enhancing neighborhood comfort, though it may slightly reduce cooling efficiency. The system also includes safety features that may temporarily stop operation under certain conditions, such as voltage fluctuations or to protect the unit during startup.

Usage Features:

The manual outlines several key usage features and considerations:

Operation Modes: The unit supports various operation modes, including COOL, DRY, FAN, and HEAT. In a multi-system setup, COOL, DRY, and FAN operations can be used simultaneously across different indoor units. AUTO operation automatically selects between COOL and HEAT based on indoor temperature.
Multi-System Operation: When multiple indoor units are connected to a single outdoor unit, the first unit turned on typically takes priority for the operation mode. If subsequent units are set to a different mode (e.g., HEAT when the priority unit is in COOL), they may enter a standby state until the priority unit stops operating. The "Priority room setting" feature, which requires initial programming, allows a designated room to take precedence in operation mode selection.
Quiet Operation: The "NIGHT QUIET mode" is an optional feature that reduces the outdoor unit's operating noise during specific hours, typically when the outdoor temperature drops significantly. This feature needs to be programmed during installation.
COOL/HEAT Mode Lock: This feature, also requiring initial programming, can forcibly set all indoor units in a multi-system to either COOL or HEAT operation, which is useful for maintaining a consistent environment across multiple rooms. It cannot be activated simultaneously with the "Priority room setting."
Remote Controller: The unit is operated via a remote controller, which can be either wired or wireless. Users are advised to handle the remote controller carefully, avoiding hard or pointed objects on buttons and protecting it from direct sunlight or water splashes.
Operating Conditions: The manual provides specific outdoor and indoor temperature and humidity ranges for optimal and safe operation in COOL/DRY and HEAT modes. Operating outside these ranges or in specific environments (e.g., areas with flammable materials, mineral oil mist, high salt content, or strong electromagnetic waves) is discouraged.
Power Failure Recovery: After a power failure, the air conditioner automatically resumes operation within approximately 3 minutes.
Lightning Protection: In areas with a risk of lightning, users are advised to stop operation and turn off the circuit breaker to protect the system.

Maintenance Features:

Regular maintenance is crucial for the longevity and efficient operation of the air conditioner. The manual details the following maintenance procedures:

Cleaning:
- Outside Panel and Flaps: These parts should be wiped with a soft cloth. For stubborn stains, a water-diluted neutral detergent can be used. Severely stained flaps may require replacement by a dealer.
- Air Filter: The air filter should be cleaned when the "air filter cleaning time indicator lamp" on the decoration panel lights up or when "Time to clean filter" displays on the wired remote controller. Cleaning involves vacuuming dust or washing the filter with water. If dust is difficult to remove, a soft brush and neutral detergent can be used, followed by drying in the shade. The manual provides detailed steps for opening the suction grille, removing, cleaning, and reattaching the air filter, and then resetting the filter sign.
- Suction Grille: The suction grille should be wiped with a soft damp cloth. For thorough cleaning, it can be removed and washed with a soft bristle brush and a neutral detergent or water. For very dirty grilles, a stronger detergent (like those for ventilation fans or ovens) can be applied, left for about 10 minutes, and then rinsed. The manual provides separate instructions for Type A and Type B suction grilles.
- Remote Controller: The remote controller should be wiped with a soft cloth.
Pre-Long Period Non-Use: Before a long period of non-use, the manual recommends operating the unit in FAN mode for several hours to dry the inside, then turning off the circuit breaker. The air filter should be cleaned and reattached, and batteries should be removed from wireless remote controllers to prevent leakage.
Periodical Maintenance: The manual strongly recommends periodical maintenance by a qualified contractor, especially after several seasons of use, as the internal parts of the air conditioner can become foul, leading to poor performance. Users are advised to contact their dealer for this service.
Troubleshooting: A troubleshooting section helps users identify and resolve common issues, such as operation not starting, no airflow, sudden stops, strange sounds, odors, or poor cooling/heating effect. It guides users on what to check before contacting a dealer.
Safety Precautions: The manual emphasizes critical safety precautions, including never attempting repairs or modifications independently, turning off the circuit breaker before maintenance, and contacting a dealer immediately for any abnormal functioning, such as burning smells, abnormal sounds, frequent circuit breaker trips, or water leaks from the indoor unit.
Disposal Requirements: Proper dismantling and disposal of the unit, refrigerant, oil, and other parts must be done in accordance with relevant local and national regulations.