Daikin FHQ125CAVEB User Manual (English)

Other manuals for Daikin FHQ125CAVEB

Service Manual215 pages

Installation Manual36 pages

Questions and Answers:

K
Kathleen CameronAug 4, 2025
Why is my Daikin FHQ125CAVEB Air Conditioner not cooling or heating properly?
- R
  Rachel VillegasAug 4, 2025
  If your Daikin Air Conditioner isn't cooling or heating enough, several factors could be the cause. First, check for any obstructions blocking the air inlet or outlet of either the outdoor or indoor unit and remove them to ensure proper ventilation. Also, ensure the air filter isn't clogged; if it is, have it cleaned by a qualified service person. Make sure that the set temperature, fan speed, and airflow direction are set correctly. Additionally, close any open doors or windows and use curtains or blinds to block direct sunlight.
W
William MillerAug 8, 2025
How to fix a Daikin FHQ125CAVEB that won't turn on?
- S
  shannon76Aug 8, 2025
  If your Daikin Air Conditioner isn't turning on, there might be a few reasons. First, check if a fuse has blown and turn off the power supply. Next, see if the power circuit breaker has tripped; if it's in the OFF position, switch it back on, but if it's in the trip position, contact your local dealer. Also, verify if there's a power outage, and if so, wait for the power to be restored. Note that the air conditioner will automatically restart after a power failure.
L
Lisa MorseAug 12, 2025
Why is my Daikin Air Conditioner turning on and off by itself?
- P
  Peter ThomasAug 12, 2025
  If your Daikin Air Conditioner turns on or off without you pressing the ON/OFF button, check if the ON/OFF timer is activated and turn it off. Also, verify if any remote control device is connected, and contact the central control room that directed the stop. Finally, check if the display for centralized control is lit and contact the central control room that directed the stop.
S
Shane SuttonAug 16, 2025
What to do if Daikin FHQ125CAVEB Air Conditioner detects multiple master units?
- J
  James RobinsonAug 16, 2025
  If your Daikin Air Conditioner detects multiple master units, connect the remote controller to only one indoor unit.
J
John ClarkAug 21, 2025
What to do if Daikin FHQ125CAVEB Air Conditioner has gas shortage due to clogging in refrigerant piping?
- D
  Donald WadeAug 21, 2025
  If you suspect clogging in the refrigerant piping system of your Daikin Air Conditioner, check for a failure to open the stop valve and any clogging within the refrigerant system.
M
Mark WallerAug 25, 2025
What does excess indoor units connected error mean on Daikin FHQ125CAVEB Air Conditioner?
- M
  Mackenzie BlakeAug 26, 2025
  This error will be displayed if five or more indoor units are connected to your Daikin Air Conditioner.
K
Kirsten RogersAug 29, 2025
Why does my Daikin Heat Pump emit an odor?
- M
  Michael RothAug 29, 2025
  If your Daikin Heat Pump emits an odor, it's likely due to room smells and cigarette odors that have accumulated inside the indoor unit. To resolve this, the inside of the indoor unit must be cleaned.

Daikin FHQ125CAVEB Specifications

General

Brand	Daikin
Model	FHQ125CAVEB
Category	Air Conditioner
Language	English

Summary

Disposal Requirements

Environmental Disposal Guidelines

Proper disposal of electrical products, refrigerants, and batteries according to regulations.

Important Information Regarding Refrigerant

Refrigerant Type and GWP

Specifies the type of refrigerant (R410A) and its Global Warming Potential (GWP).

Safety Precautions

General Operation and Handling Safety

Covers intended users, manual handling, warning symbols, and basic operational cautions.

Emergency and Environmental Safety

Addresses malfunctions, natural disasters, refrigerant leakage, flammable materials, and environmental hazards.

Installation and Electrical Safety

Installation, Wiring, and Power Safety

Guidelines for professional installation, wiring, earthing, breakers, and power supply.

Environmental and Operational Hazards

Addresses oily smoke, flammable gas, flammable sprays, washing, and unit clearance.

Health and Specific Unit Safety

Air Exposure and Unit Specific Safety

Discusses health risks of air exposure and safety for remote controls and outdoor units.

Before Operation

System Type, Manuals, and Modes

Covers system type confirmation, manuals, operation modes, and customized controls.

Advanced Control System Precautions

Group and Two Remote Controller Systems

Precautions for group control and two remote controller systems, including dealer consultation.

FXHQ Model Operation and Parts

FXHQ Manual References and Parts Identification

Directs to FXHQ manuals and identifies unit parts like outlets, filters, and wiring.

Operation Range

FHQ Cooling and Heating Ranges

Specifies operating temperature and humidity for FHQ cooling and heating.

FXHQ Manual Reference

Directs users to the FXHQ outdoor unit manual for operation details.

Installation Site Requirements

Site Selection and Avoidance

Guidelines for selecting suitable installation locations and avoiding specific areas.

Electrical and Noise Considerations

Covers wiring, power supply, noise, vibration, and outdoor unit clearance.

Operation Procedures

System Type Operation and Power Timing

Explains system type differences, pre-operation power supply, and manual references.

Operation Characteristics: Modes and Conditions

Cooling and Heating Operation Details

Details airflow, defrost switching, warm-up times for cooling and heating.

Program Dry and Environmental Factors

Covers humidity control, environmental factors affecting heating, and sound pressure.

Airflow Direction Adjustment

Adjustment Methods and Controls

Outlines adjustment methods, vertical and horizontal controls, and blade movement.

Vertical, Horizontal, and Blade Control

Details methods for adjusting airflow direction, blade movement, and group control limitations.

Optimum Operation and Maintenance Preparation

Environmental Controls and Unit Placement

Covers sunlight prevention, door/window management, and unit clearance for optimal operation.

Temperature, Filter, and Device Placement

Covers temperature setting, filter cleaning indicator, and electronic device placement.

Maintenance: Air Filter Cleaning

Filter Cleaning Procedure and Warnings

Step-by-step guide for cleaning the air filter, including precautions and indicator reset.

Maintenance: Suction Grille Cleaning

Suction Grille Cleaning Procedure

Procedure for opening, removing, cleaning, and re-attaching the suction grille.

Maintenance: Seasonal Cleaning and Start-up

Start-up Checks and Filter Care

Covers pre-start checks, filter cleaning, and resetting the filter indicator.

Suction Grille and Chemical Precautions

Details suction grille cleaning, washing, and chemical use warnings.

Non-Malfunction Symptoms

Operation Timing and Mode Specifics

Addresses heating operation timing, long-term stop, and FHQ specific non-malfunctions.

Operational Stops and Mode Variations

Explains unit stops, defrost display, communication errors, fan speed, airflow, and white mist.

Noises, Odors, and Ineffective Cooling

Covers normal noises, unit odors, and reasons for ineffective cooling.

Troubleshooting: Unit Operation and Controls

FHQ Unit Not Operating

Checks for fuses, breakers, and power failures when the FHQ unit is not operating.

FHQ Operational Issues

Troubleshooting steps for FHQ unit stopping after operation or having insufficient cooling/heating.

Unintended Operation and Control Issues

Addresses unintended start/stop, timer use, remote devices, and centralized control problems.

Troubleshooting: Critical Malfunctions and Actions

Critical Malfunctions and Actions

Actions for critical issues like burning odors, safety device trips, switch failures, and water leaks.

Troubleshooting: Malfunction Codes

Malfunction Code Display and FXHQ Reference

Explains how to interpret malfunction codes and refers to the FXHQ manual.

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501 pages

Daikin FHQ125CAVEB User Manual

Table of Contents

Other manuals for Daikin FHQ125CAVEB

Questions and Answers:

Daikin FHQ125CAVEB Specifications

Summary

Disposal Requirements

Environmental Disposal Guidelines

Important Information Regarding Refrigerant

Refrigerant Type and GWP

Safety Precautions

General Operation and Handling Safety

Emergency and Environmental Safety

Installation and Electrical Safety

Installation, Wiring, and Power Safety

Environmental and Operational Hazards

Health and Specific Unit Safety

Air Exposure and Unit Specific Safety

Before Operation

System Type, Manuals, and Modes

Advanced Control System Precautions

Group and Two Remote Controller Systems

FXHQ Model Operation and Parts

FXHQ Manual References and Parts Identification

Operation Range

FHQ Cooling and Heating Ranges

FXHQ Manual Reference

Installation Site Requirements

Site Selection and Avoidance

Electrical and Noise Considerations

Operation Procedures

System Type Operation and Power Timing

Operation Characteristics: Modes and Conditions

Cooling and Heating Operation Details

Program Dry and Environmental Factors

Airflow Direction Adjustment

Adjustment Methods and Controls

Vertical, Horizontal, and Blade Control

Optimum Operation and Maintenance Preparation

Environmental Controls and Unit Placement

Temperature, Filter, and Device Placement

Maintenance: Air Filter Cleaning

Filter Cleaning Procedure and Warnings

Maintenance: Suction Grille Cleaning

Suction Grille Cleaning Procedure

Maintenance: Seasonal Cleaning and Start-up

Start-up Checks and Filter Care

Suction Grille and Chemical Precautions

Non-Malfunction Symptoms

Operation Timing and Mode Specifics

Operational Stops and Mode Variations

Noises, Odors, and Ineffective Cooling

Troubleshooting: Unit Operation and Controls

FHQ Unit Not Operating

FHQ Operational Issues

Unintended Operation and Control Issues

Troubleshooting: Critical Malfunctions and Actions

Critical Malfunctions and Actions

Troubleshooting: Malfunction Codes

Malfunction Code Display and FXHQ Reference

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