Daikin
my.daikin.eu › content › dam › DASW › supportavdelningen › Felkoder_SM-TS3errorcode_chart.pdf pdf
Simple Self-Diagnosis by Malfunction Code After Sales Service Division (SM-TS3)
U1 · Reverse phase, open phase · Power supply reverse phase · T phase open phase · Defective outdoor unit PCB (A1P) k k k k k k k · U2 · Malfunction of power supply or · instantaneous power failure · Abnormal power supply voltage · Instantaneous power failure · Defective main circuit ...
Scribd
scribd.com › document › 425197901 › Daikin-error-code-pdf
Daikin VRV Error Code Troubleshooting Guide | PDF | Manufactured Goods | Electrical Engineering
U1 − 01 Reverse phase/open phase for power supply (Master) U1 − 04 Reverse phase for power supply [with power supply turned ON] (Master) U1 − 05 Reverse phase/open phase for power supply (Slave 1) Refer to the “U1” flow chart of each ...
Videos
Daikin
daikin.com › products › ac › services › error_codes
Error Codes | After Sales Service | Air Conditioning and Refrigeration | Daikin Global
By checking the error code, you are able to identify the status and the issue of the air conditioner/air conditioning system.
Daikin-airconservice
daikin-airconservice.ru › f › si30-701.pdf pdf
Pocket Manual Service Diagnosis Si30 - 701_A
based on the Error code shown · to the left. U1 - 04 · Reverse phase for power · supply [with power supply · turned ON] (Master) U1 - 05 · Reverse phase/open phase · for power supply (Slave 1) U1 - 06 · Reverse phase for power · supply [with power supply ·
JustAnswer
justanswer.com › australia-whitegoods › 80fux-code-u1-showing-flashing-dikin-air-con-controller.html
How to Fix Daikin Error Code U1: Expert Solutions
Hi, welcome to Just Answer. My name is ***** ***** I look forward to helping you! The U1 code means there was a drop or loss of voltage. Check the incoming power supply connections for signs of heat or burning.
Star-supply
star-supply.com › content › Daikin-Troubleshooting Codes.pdf pdf
Trouble Shooting www.climatecenter.co.uk Daikin Trouble Shooting Guide
Capacity setting error · Incorrect capacity setting · • · • · Trouble Shooting · www.climatecenter.co.uk · Daikin Trouble Shooting Guide · Past & Current Models · Daikin Fault Codes · System Fault Codes · Fault Code · Definition · Supposed Causes · Split · Skyair · VRV · ...
RemoveandReplace.com
removeandreplace.com › home › home air conditioning › daikin air conditioner ac error codes
DAIKIN Air Conditioner AC Error Codes
December 22, 2022 - U0 System Shortage of refrigerant or EEV failure U1 System Negative phase, Open phase U2 System Power supply insufficient U3 System Wiring check operation not executed U3 System Mismatch of indoor and outdoor units – Split only U4 System ...
Reddit
reddit.com › r/hvac › help - daikin 20kw ducted system is throwing a u1 fault code
r/HVAC on Reddit: HELP - DAIKIN 20kw ducted system is throwing a U1 fault code
October 31, 2025 -
DAIKIN 20kw ducted system is throwing a U1 fault code.
We did change the power and incorrectly orientated the phases but have rectified this issue but we can’t clear the code to restart the unit.
I have continuity checked all the fuses on the PCB’s and carried out numerous power off resets including one over night but the fault code persist.
I think the indoor controller is just telling the out door unit it has a problem at this point.
Have cleared the fault off the remote but the out door unit still won’t start.
PCB’s don’t have any visible issues.
Any ideas on what to try next?? We really need this thing going as it’s being used for temperature control in a factory.
Daikin ONE
daikinone.com › smart_thermostats › oneplus › pros › PhaseTwoErrorCodes.pdf pdf
Climate Talk Fault Code Dealer error code Possible causes Corrective actions
•Call Daikin support at 1-855-DAIKIN1(option 1) Thermostat · minor · Communication error · 5 · 06 · Piezo speaker hardware error · Piezo driver could not start due to hardware error. •Check for proper 24 VAC powering thermostat. •Conduct a warm start of the thermostat.
CoolAutomation
coolautomation.com › blog › daikin error codes: comprehensive breakdown
Daikin Error Codes (Malfunction Self-Diagnosis)
July 20, 2025 - Easily identify Daikin HVAC system faults with this complete list for simple self-diagnosis & troubleshooting. Includes VRV, SkyAir, HRV systems, and more.
Airway Group
airway-group.co.uk › home › help & advice › daikin air conditioning fault codes explained [infographic]
Daikin Air Conditioning Fault Codes Explained [Infographic] | Airway
April 2, 2026 - U1 – Reverse phase – The three phase power supply has been reversed. U2 – Open phase or power voltage imbalance – There may be an open phase or a voltage imbalance in the power supply.
JustAnswer
justanswer.com › hvac › roaz1-u1-error-code-daikin-controller-not-know.html
Daikin U1 Error Code: Troubleshooting Guide & Solutions
I am getting error code U4 on my Daikin air conditioner. It was working OK, when I switched on 'mouth' would open then, My daikin air conditioner is not running but the thermostat works. How do I get it to work. HVAC Technician: André R. I am the technician, and I will be happy to assist you. HVAC Technician: André R. ... HVAC Technician: André R. Certainly! Here’s a sequence of troubleshooting steps you can try to resolve the U1 error code on your air conditioning unit when you have time:
Glow HCE
glowhce.com.au › home › daikin fault codes – system errors
Daikin System Error Codes | Simple Self Diagnosis | Daikin Fault Codes
October 13, 2023 - Daikin System Fault Codes - Simple self-diagnosis by malfunction codes. Is your Daikin air conditioner system displaying an error code starting with U? See here
HVAC Toolkit
hvactoolkit.org › home › resources › error codes › daikin
Daikin Error Codes - Complete Fault Code List & Solutions | HVAC Toolkit
Complete Daikin error code list for mini-splits, VRV systems, and air conditioners. Find meanings, causes, and troubleshooting solutions for all Daikin fault codes.
Airintelligence
airintelligence.com › daikinone › ErrorCodes-S21.htm
Airintelligence
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Livin
livin.co.uk › media › wjhikl1c › daikin-error-codes.pdf pdf
daikin-error-codes.pdf - Livin
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Daikin ONE
daikinone.com › smart_thermostats › oneplus › pros › phase-one-error-codes › DaikinOneUnitaryErrorCodes.pdf pdf
Climate Talk Fault Code Dealer error message Possible causes Corrective actions
•Call Daikin support at 1-855-DAIKIN1(option 1) Thermostat · minor · Communication error · 06 · Piezo speaker hardware error · Piezo driver could not start due to hardware error. •Check for proper 24 VAC powering thermostat. •Conduct a warm start of the thermostat.
JustAnswer
justanswer.com › australia-whitegoods › 58gw0-error-code-u1-solution-daikin-model-brc1e61-indoor-unit.html
How to Fix Daikin Error Code U1: Expert Solutions and Troubleshooting
... BRC1E61 system often shows U1 errors and fails to restart after power interruptions. The U1 error on Daikin BRC1E61 indicates communication failure between indoor HJJ/280 and outdoor FAE/010 units.
Perthaircon
perthaircon.com.au › home › daikin error and fault codes
Daikin Error and Fault Codes – Daikin Air Conditioning Perth by Airpro Air Conditioning
J1 Outdoor Malfunction of pressure ... sensor malfunction PJ Outdoor Failure of capacity set resistor U0 System Shortage of refrigerant or EEV failure U1 System Negative phase, Open phase U2 System Power supply insufficient U3 System Wiring check operation not executed U3 ...