Daikin FXTQ-A - User Manual

Questions and Answers

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Sean HamiltonSep 10, 2025
What to do for Daikin FXTQ-A Air Conditioner error code A0?
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  Steven MartinezSep 12, 2025
  If your Daikin Air Conditioner displays error code A0, it may indicate a fault board. Check setting 22-1-3: T1-T2 NC. If correct, it indicates an indoor board fault.
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Katie YoungAug 25, 2025
What does error code CE mean on my Daikin FXTQ-A?
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  Ashley LaneAug 25, 2025
  Error code CE on your Daikin Air Conditioner indicates a problem with an optional sensor. The issue could stem from: * **No signal from optional presence sensor:** Check the wire harness connections. * **No signal from optional floor temperature sensor:** Check the wire harness connections. * **Faulty signal from optional floor temperature sensor:** Check the pins connector for a short circuit. * **High temperature detection or electric noise floor temperature sensor:** Check the resistance of the floor temperature sensor.
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Carrie WoodsAug 26, 2025
What does error code C4 mean on Daikin FXTQ-A?
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  Amy SteeleAug 27, 2025
  Error code C4 on your Daikin Air Conditioner indicates a problem with the coil thermistor. This could be due to: * **Coil thermistor short circuit:** Check the coil thermistor resistance. * **Coil thermistor open circuit:** Check the wire harness connections to the coil thermistor.
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obrownAug 27, 2025
How to fix Daikin FXTQ-A Air Conditioner error code A3?
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  Jay FreemanAug 28, 2025
  Daikin Air Conditioner error code A3 indicates that the float switch is open during thermo on (cooling). To resolve this issue: * Check the float switch status. * Ensure there is no blockage in the drain pipe. * Verify that the drain pipe raiser is less than 600 mm.
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Cynthia HansenAug 29, 2025
What causes Daikin FXTQ-A Air Conditioner error code C9 and how to resolve it?
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  Susan BridgesAug 29, 2025
  Daikin Air Conditioner error code C9 is related to the air thermistor. The cause may be: * **Air thermistor short circuit:** Check the air thermistor resistance. * **Air thermistor open circuit:** Check the wire harness connections to the air thermistor.
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thompsonmariaNov 20, 2025
What to do if my Daikin FXTQ-A Air Conditioner shows error code AH?
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  Craig WestNov 20, 2025
  If your Daikin Air Conditioner displays error code AH, there are several potential causes related to the self-cleaning function. Here's what you can check: * **Communication Error:** Verify the wire harness connections between the main PCB and the self-cleaning PCB. * **Dust Detection Sensor Error:** Inspect the wire harness connections for the dust detection sensor. * **Dust Collection Error:** Look for any clogging caused by dust between the brush-arm and the dust collector box. * **Air Filter Rotation Error:** Examine the rotation mechanism of the air filter. * **Damper Rotation Error:** Check the rotation mechanism of the damper. * **Filter Cleaning Time Error:** This may occur if the filter auto-cleaning program could not be performed during a 24-hour operation. * **Aut...
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Jennifer JonesSep 18, 2025
What does error code C6 mean on Daikin FXTQ-A Air Conditioner?
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  Scott WilcoxSep 18, 2025
  Daikin Air Conditioner error code C6 indicates a faulty combination of the main PCB and the inverter PCB fan motor. Change the inverter PCB fan motor to the correct type.
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Todd HebertSep 22, 2025
What does error code AJ mean on Daikin FXTQ-A?
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  Andrew FriedmanSep 22, 2025
  Daikin Air Conditioner error code AJ can be caused by: * **Capacity adaptor missing:** Add the corresponding capacity adaptor onto the spare part PCB. * **Incorrect expansion valve motor:** Use the correct expansion valve motor (between gear type and direct drive).
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Jeffrey OconnellSep 8, 2025
What does error code UE mean on Daikin FXTQ-A Air Conditioner?
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  tiffanydanielsSep 9, 2025
  Daikin Air Conditioner error code UE indicates a communication error with the central control device. Check the communication from the indoor unit to central control. Verify the existing group number set on the indoor unit and the registered group number in the central control.
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Jill SinghSep 5, 2025
What does error code U9 mean on Daikin FXTQ-A?
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  Jonathan SchmidtSep 5, 2025
  Daikin Air Conditioner error code U9 indicates a communication error between other indoor units and the BS unit. Check other indoor units for errors other than U9.