Appliance Types


Appliance Brands


Article Categories


More Articles


Daikin Appliances
Daikin Appliances

Daikin Appliance Error Codes

Daikin is the World's No. 1 air conditioning company. Daikin is a leading innovator and worldwide provider of advanced, high quality air conditioning and heating solutions for residential, commercial and industrial applications. With more than 90 years of operation, Daikin has sold millions of systems throughout 140 countries. But what makes us great isn't just our HVAC systems. It's our personal service, commitment to quality and technological innovations that allow us to be a leading HVAC manufacturer.


Air Conditioner Error Codes

CODE: A1. 
PROBLEM: Malfunction of indoor unit PCB Malfunction due to noise Defect of indoor unit PCB. 

CODE: A3. 
PROBLEM: Malfunction of drain level control system Drain piping clogging, improper drain piping work Defect of drain pump. Defect of float switch. 

CODE: A4. 
PROBLEM: Malfunction of freezing protection Shortage of water volume Low water temperature setting Defect of 26WL. Defect of water temperature thermistor. 

CODE: A5. 
PROBLEM: High pressure control in heating, freeze-up protection control in cooling Clogged air filter of indoor unit and short-circuit Defect of indoor unit heat exchanger thermistor. 

CODE: A6. 
PROBLEM: Fan motor locked, overload, overcurrent Defect of connector contact Defect of indoor unit PCB Defect of fan motor. 

CODE: A7. 
PROBLEM: Malfunction of swing flap motor Failure of swing flap motorm, Defect of indoor unit PCB Jammed swing mechanism/blade. 

CODE: A8. 
PROBLEM: Malfunction of power supply Overcurrent of AC input, Defect of power supply voltage. 

CODE: A9. 
PROBLEM: Malfunction of electronic expansion valve drive Defect of electronic expansion valve coil, Defect of indoor unit PCB, Defect of connector contact. 

CODE: AA. 
PROBLEM: Heater overheat 26WH is activated. 

CODE: AF. 
PROBLEM: Malfunction of a humidifier system Water leakage of humidifier (option), Failure of swing float switch. Improper drain piping incline. 

CODE: AH. 
PROBLEM: Malfunction of dust collector of air cleaner Defect of dust collecting element Defect of high voltage power supply unit Stained insulator part Defect of indoor unit PCB. 

CODE: AJ. 
PROBLEM: Malfunction of capacity setting (Indoor unit PCB) Capacity setting adaptor is not installed when replacing PCB Defect of indoor unit PCB. 

CODE: C1. 
PROBLEM: Failure of transmission (between indoor unit PCB and fan PCB) Defect of transmission of fan motor control driver. 

CODE: C4. 
PROBLEM: Malfunction of liquid pipe thermistor for heat exchanger Defect of connector contact. Defect of liquid pipe thermistor for heat exchanger. 

CODE: C5. 
PROBLEM: Malfunction of gas pipe thermistor for heat exchanger Defect of connector contact. Defect of gas pipe thermistor for heat exchanger. 

CODE: C6. 
PROBLEM: Malfunction of fan motor control driver Defect of fan motor sensor system Defect of fan motor control driver. 

CODE: C7. 
PROBLEM: Front panel driving motor fault Defect of front panel driving motor Defect of limit switch. 

CODE: C9. 
PROBLEM: Malfunction of suction air thermistor Defect of connector contact Defect of thermistor for suction air. 

CODE: CA. 
PROBLEM: Malfunction of discharge air thermistor Defect of connector contact. Defect of thermistor for discharge air. 

CODE: CC. 
PROBLEM: Malfunction of humidity sensor system Defect of connector contact Defect of humidity sensor.


Furnace Error Codes

CODE: One LED flash that stays on continuously  
PROBLEM: No signal from the thermostat.  
FIX: Turn off the unit’s power and check connections. 

CODE: Single LED flash  
PROBLEM: Furnace lockout due to an excessive number of ignition retries (3).  
FIX: Locate and correct gas interruption. Reset by lowering it for 20 seconds and then raise it back, furnace will reset itself after one hour. 

CODE: Two LED flashes  
PROBLEM: Draft inducer is not operating or the pressure switch circuit has closed.  
FIX: Replace the induced draft blower pressure switch, or repair the short. 

CODE: Three LED flashes  
PROBLEM: The pressure switch is open.  
FIX: Pressure switch may need to be replaced. 

CODE: Four LED flashes  
PROBLEM: Pressure issue. High limit cut-off due to faulty wiring or bad filters.  
FIX: Replace or clean the air filter; clean drain tubes of moisture or debris; may have an open limit switch that requires a jump, ensure not to run it with the main switch bypassed. 

CODE: Five LED flashes  
PROBLEM: The unit is sensing a flame without a call for heat.  
FIX: Might be the result of a slowly closing valve. Turn off the gas until the valve is fixed. 

CODE: Seven LED flashes  
PROBLEM: Faulty flame sensor.  
FIX: Flame sensor might be dirty or placed too far from flame. Clean if dirty, replace if defective. 

CODE: Continuous LED flashing  
PROBLEM: Polarity of volt power is reversed.  
FIX: Review wiring diagram to correct polarity. 


Heat Pump Error Codes


Daikin is a well-known manufacturer of heat pumps and air conditioning systems. While specific error codes may vary depending on the model and series of your Daikin heat pump, I can provide you with a list of some common Daikin heat pump error codes and their potential meanings:

A1: Indoor PCB malfunction

Possible causes: Faulty indoor PCB (Printed Circuit Board), loose connections, damaged wiring.

A3: Indoor fan motor malfunction

Possible causes: Defective indoor fan motor, faulty fan motor capacitor, wiring issues.

A5: Freeze-up prevention

Possible causes: Freezing of the outdoor unit due to low ambient temperature or issues with the outdoor unit.

A6: Fan motor malfunction

Possible causes: Defective outdoor fan motor, faulty fan motor capacitor, wiring problems.

H3: Compressor discharge temperature protection

Possible causes: High discharge temperature, excessive refrigerant pressure, faulty compressor.

H4: Outdoor coil temperature sensor malfunction

Possible causes: Faulty outdoor coil temperature sensor, loose connections, damaged wiring.

E0: Failure of indoor unit communication

Possible causes: Communication error between the indoor and outdoor units, faulty communication wiring, loose connections.

E3: High-pressure switch activated

Possible causes: High refrigerant pressure, clogged or restricted airflow, issues with the outdoor unit.

Please note that this is not an exhaustive list, and the error codes and their meanings can vary depending on the specific model and series of your Daikin heat pump. Consult the user manual or contact Daikin customer support or a professional technician for the most accurate diagnosis and assistance with resolving the specific error code on your unit.



Daikin Appliance Error Codes

Daikin appliance fault codes

Daikin appliance diagnostic codes

Daikin appliance error symbols

Daikin appliance common faults


Product Reviews:

The Daikin 12,000 BTU 24.5 Seer heat pump carries out its duties diligently
The Daikin 12,000 BTU 24.5 Seer heat pump carries out its duties diligently and silently but I have a problem with the much-touted energy saving feature it is supposed to have. My power bills have shot through the stratosphere since I started using it 10 months ago. I would love to know if anything can be done about its power consumption so that I wouldn’t have to worry about energy costs. Generally, it is a nice gadget.
Published: March 29, 2022
Little Rock, AR
Source: pickhvac.com

I purchased a Daikin System, at first I was skeptical with being it's
I purchased a Daikin System, at first I was skeptical with being it's a brand I never heard of- The Installing ac company assured Daikin is the best and he backs the brand with a Peace if mind warranty – 12 yr warranty- 12 yr labor insurance not offered by other Brands -he even helped navigate to actual online websites and showed me the real reviews – showed me the savings and comfort the ac will bring into our lives – well it's been 7 months and the Daikin system is outstanding, it runs efficiently and very quiet – my electric Bill even dropped – my neighbor wants one now and he is going with the new fit – I highly recommend and they are made in the USA
Published: May 3, 2019
Logan Gil
Source: furnacecompare.com

My heater obsoleted over a year ago, prompting another visit to Daikin. The
My heater obsoleted over a year ago, prompting another visit to Daikin. The replacement wasn’t long in coming and I was able to continue with my life as usual. Though this is not your normal air conditioner as it is designed to save lots of energy, pushing down your energy bills, you will love its efficiency. The machine senses the inactivity in the house and automatically shifts to standby mode, further saving on electricity bills. I have been using it for the last 15 months.
Published: April 29, 2022
Hartford, CT
Source: pickhvac.com

Last summer, I realized that my old heat pump was no longer up to the task
Last summer, I realized that my old heat pump was no longer up to the task and quickly went out to get a new device. A friend had pointed me in the direction of Daikin and had promised I would never regret the decision. Well, I haven’t. 5 months down the line and the machine doesn’t show any signs of fatigue. It is a true reflection of Japanese technology, famed to be among the best in the world.
Published: November 30, -0001
Washington, DC
Source: pickhvac.com

I wouldn’t mind the hum of the powerful Daikin 24,000 BTU AC so long as i
I wouldn’t mind the hum of the powerful Daikin 24,000 BTU AC so long as it does its job well. I don’t see any sense in going for a quiet but hopelessly ineffective device. The slight vibrations are great for soothing me into a deep slumber! I think Daikin made a big balance between power and noise levels – huge power means you have to sacrifice certain niceties like a quiet device. At less than $3,000, it is the best bargain one can ever out there. I have been using it since 18 months ago, and so far, nothing to complain about.
Published: May 29, 2022
Washington, DC
Source: pickhvac.com

I purchased this AC after it was offered by a local contractor this summer.
I purchased this AC after it was offered by a local contractor this summer. Works great, quiet, and low utility bill. Never heard of Daikin but I am glad I purchased the unit so far.
Published: August 3, 2016
James
Source: furnacecompare.com

We purchased a new furnace and central air unit. The house seems much more
We purchased a new furnace and central air unit. The house seems much more cooler with so much less effort. The air condition unit outside is so quiet you can hardly hear it running. We haven’t how do use the furnace yet but I’m sure it will be just as effective. We are extremely happy with both of our set ups and Applegate cooling and heating did an amazing job installing them. The warranty coverage that comes with the system is absolutely amazing along with all the rebates.
Published: August 15, 2020
Js2de Central Michigan
Source: daikincomfort.com

I just recently had the new Daikin furnace installed into our home and so f
I just recently had the new Daikin furnace installed into our home and so far I'm very impressed with both it's energy efficiency as well as it's overall quiet operation. This new unit also has a much smaller footprint than the unit it's replacing, which in turn takes up less valuable space in our utility room. I'm very pleased with making this purchase.
Published: September 15, 2020
scorey55 Belleville, Ontario Canada
Source: daikincomfort.com

My old furnace needed replacing and I struggle with the decision to spend a
My old furnace needed replacing and I struggle with the decision to spend a little more for a modulating furnace. I finally choose a DM97MC furnace with a Daikin One thermostat. I am very impressed how quiet the system is. I can’t even hear then it runs. And, now my house is more balanced even with no swings in temperature. Very impressive.
Published: October 1, 2020
Springer Toronto, Ontario
Source: daikincomfort.com

I purchased my home in 2016 and it was built in 1977. This home is ~2,600 s
I purchased my home in 2016 and it was built in 1977. This home is ~2,600 sq.ft. and has an unfinished basement. The HVAC system was very dated, and the furnace was likely the original. Using Legacy Heating and Air, Inc., a new full system install was done. The components used are all Daikin (aside from a water heater also replaced), and are the following: DM97MC1005CN (Furnace), DX17VSS421AA (A/C), CAPE4860C4 (Coil), DTST-CWBSA-NI-A (Thermostat). I could immediately feel the difference. There were rooms in the house that weren't getting much or any air adjustments because the old system was simply not a great fit for the house and inefficient. With the current system, I can now cool or heat the house evenly several degrees within minutes. The new thermostat is very slick, and easy to control. I haven't seen the new cost for energy consumption (not billed using new system yet), but from what I can tell is it's going to be a nice difference. Everything is incredibly quiet and I'm very pleased with this investment.
Published: October 5, 2020
pvroberts Granger, IN
Source: daikincomfort.com

If cooling is your main concern, you simply can’t go wrong with Daikin ai
If cooling is your main concern, you simply can’t go wrong with Daikin air conditioners. Additionally, the manufacturer hires professional representatives that are always respectful and try to find a solution, no matter the issue at hand.
Published: November 15, 2019
airconditionerlab.com
Source: airconditionerlab.com

The variable drive DX20VC is an excellent choice for the homeowner that pla
The variable drive DX20VC is an excellent choice for the homeowner that plans to stay in their existing home for 5+ years. This pay back on savings from utilities, comfort, and lack of noise that this unit provides is second to none. We have installed many of this exact model and I can honestly say that we have not been back to one installation for anything. The warranty is the best in the business and the factory support has been great. Nice product Daikin!
Published: February 3, 2015
daikincomfort.com
Source: daikincomfort.com

The furnace and air conditioner are great. However, the thermostat is prett
The furnace and air conditioner are great. However, the thermostat is pretty complicated to make changes. I did not find useful information on the web to help me through the process of changing high and low temperature and setting the schedule.
Published: October 16, 2020
RichieH Salem, Or
Source: daikincomfort.com

We installed 4 of these systems at the same home, which was of course a cos
We installed 4 of these systems at the same home, which was of course a costly investment for the homeowner so they were a little nervous about such a purchase. After a summer the customer is so happy with the performance and has reported unbelievable energy savings. The outside units sit just outside the master bedroom and they are relieved to be able to sleep well again! Also, as our installers and service technicians learn more about this product they've really enjoyed the ease of installation and testing.
Published: January 3, 2015
daikincomfort.com
Source: daikincomfort.com

I received this gadget from Amazon 13 month ago and my heart has been swell
I received this gadget from Amazon 13 month ago and my heart has been swelling with pride every time I step into the house. Silent air-conditioning and a massive 18,000 BTU power was more that I had bargained for. No disturbance in my sleep as I can simply program the device, thanks to its wireless LCD remote control. Daikin should know they have one satisfied customer.
Published: January 29, 2022
Topeka, KS
Source: pickhvac.com

Visa MasterCard

Site Secured By The Website Guardian
TOP