Daikin Air Conditioner Wall Controller Manual

The Daikin Air Conditioner Wall Controller is a user interface device for managing Daikin split-system air conditioners. It features temperature control, mode selection (Cool, Heat, Fan, Dry, Auto), fan speed adjustment, timer settings, and system status indicators. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting to AC Unit 7. Operation Modes 8. Advanced Functions 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: LCD display, control buttons, temperature sensors, communication interface for indoor unit.

Feature	Description
LCD Display	Shows temperature, mode, fan speed, timer, and system status
Mode Selection	Cool, Heat, Fan, Dry, Auto
Temperature Control	Adjust setpoint in 1°C/1°F increments
Fan Speed	Auto, Low, Medium, High, Quiet
Timer Functions	On/Off timer, weekly scheduling
Filter Indicator	Alerts when air filter needs cleaning
Power Button	Turns system On/Standby
Swing Control	Adjusts louver direction
Eco Mode	Energy-saving operation
Wi-Fi Ready	Optional connectivity module

Installation

Mount controller on wall in accessible location.

Turn off power to AC unit at circuit breaker.
Choose location: 1.5m from floor, away from direct sunlight/heat sources.
Open controller housing: Remove front cover with flat tool.
Connect wires: Match terminals (L1, L2, COM, S1, S2) to indoor unit wiring.
Secure to wall: Use provided screws and wall anchors.
Replace front cover and restore power.

WARNING! Installation must be performed by qualified technician. Ensure power is off before wiring.

First-Time Setup

Power on system; configure basic settings.

Set language: Press SET button for 3 seconds, select language.
Set temperature units: °C or °F in settings menu.
Pair with indoor unit: Auto-detection on power-up (ensure wiring correct).
Test functions: Verify all modes respond correctly.

CAUTION! Do not expose controller to water or extreme temperatures.

Specifications

Power Supply: 24V AC from indoor unit.
Temperature Range: 16°C - 30°C (60°F - 86°F).
Display: Backlit LCD with 7-segment digits and icons.
Communication: 2-wire serial communication with indoor unit.
Operating Temp: 0°C to 50°C (32°F to 122°F).
Dimensions: 86mm x 86mm x 15mm (standard wall plate).
Compatibility: Daikin FTXS, FTXN, RXS series and compatible models.
Certifications: CE, RoHS, ETL listed.

Controls and Settings

Access functions via front panel buttons. Press MODE to cycle through operations.

Button Functions: POWER, MODE, FAN, TEMP ▲/▼, TIMER, SWING, FILTER RESET, SET.

Basic Settings: Temperature setpoint, fan speed, louver direction. Advanced Settings: Timer programming (daily/weekly), Eco mode activation, filter reminder interval, beep sound on/off, backlight duration. Installer Settings: Address setting for multi-zone, test run mode, error history view (accessed by holding SET for 5 seconds).

Connecting to AC Unit

Controller communicates with indoor unit via dedicated wiring.

Ensure indoor unit power is OFF.
Connect 2 communication wires between controller terminals (S1, S2) and indoor unit CNVS terminal.
Connect power wires (L1, L2, COM) as per wiring diagram.
Secure all connections and restore power.

Tip: Use shielded cable for communication wires if run exceeds 10 meters.

Operation Modes

Select mode based on comfort needs.

Cool Mode: For cooling; set desired temperature.
Heat Mode: For heating (heat pump models only).
Fan Mode: Circulates air without cooling/heating.
Dry Mode: Reduces humidity while maintaining temperature.
Auto Mode: System automatically selects Cool or Heat based on room temperature.
Quiet Operation: Press FAN button repeatedly to select Quiet fan speed.
Swing Control: Adjust vertical/horizontal louvers for optimal air distribution.

WARNING! Do not set temperature too low in Cool mode to prevent compressor overload.

Advanced Functions

Timer: Program On/Off times for daily or weekly schedule. Eco Mode: Reduces energy consumption by optimizing operation. Filter Reset: Hold FILTER button for 3 seconds after cleaning filter. Error Codes: Display shows fault codes (e.g., E1, E5) for troubleshooting.

Care & Cleaning

Turn off power before cleaning. Wipe surface with soft, dry cloth. For stubborn stains, use cloth dampened with mild soap solution.

CAUTION! Do not use abrasive cleaners, solvents, or excessive water. Never spray directly on controller.

Regulatory Information

FCC Part 15: Class B digital device; complies with limits for residential use. Copyright © 2025 Daikin Industries, Ltd. All rights reserved. For support, visit www.daikin.com or contact authorized Daikin service center. This product may be covered by one or more U.S. patents.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No display	Power loss, wiring fault	Check circuit breaker; verify wiring connections; ensure indoor unit powered.
Controller not responding	Communication error	Check S1/S2 wiring; restart system; ensure compatible indoor unit.
Temperature inaccurate	Sensor location, calibration	Relocate controller away from heat sources; allow 15 min stabilization.
AC unit not turning on	Mode setting, timer	Check mode selection; cancel timer if active; verify setpoint vs room temp.
Error code displayed	System fault	Refer to error code list in indoor unit manual; contact service if persistent.

Reset: Turn off power for 1 minute, then restore. For settings reset, hold SET and MODE together for 10 seconds.

Service: Contact Daikin authorized service: 1-800-DAIKIN1; www.daikin.com/support