This is a pumping sound of the water in the air conditioner and heard when the water is pumped out from the air conditioner in cooling or drying operation. Flowing water; Generated because the refrigerant in the air conditioner is flowing. valve Defect of compressor, Defect of compressor                Defect of outdoor unit PCB Defect of inverter main circuit capacitor   Defect of power transistor, Malfunction of electronic expansion valve coil, Defect of electronic expansion valve    Defect of connector contact Defect of outdoor unit PCB, Defect of four way valve Defect of outdoor unit PCB, Malfunction of entering water temperature, Defect of electronic expansion valve of thermal storage unit Defect of thermal storage PCB, Clogged refrigerant piping Defect fo discharge pipe thermistor, Defect of outdoor unit fan motor     Defect of electronic expansion valve Defect of heat exchanger thermistor     Defect of outdoor unit PCB, Refrigerant overcharged Disconnection of heat exchanger thermistor, Disconnection of outdoor air thermistor Disconnection of liquid pipe thermistor, Malfunction of sensor system of compressor, Harness is disconnected, or defective connection Defect of PCB, Malfunction of high pressure switch (HPS), Defect of high pressure switch     Broken wire, Defect of low pressure switch    Broken wire, Malfunction of compressor motor overload thermistor, Faulty contact of fan wiring Defect of fan motor driver, Malfunction of compressor input (CT) system, Defect of power transistor         Defect of reactor, Defect of connector contact Defect of thermistor for outdoor air, Malfunction of  (hot) water temperature thermistor, Defect of connector contact      Defect of outdoor unit PCB Defect of thermistor for water temperature, Thermal storage group defective wiring     Defect of setting Excess of thermal storage tank numbers, Malfunction of thermal storage tank water level, Low water level                          Defect of switch setting Water level detecting sensor failure   Defect of connector contact, Defect of pressure sensor connector contact, Defect of current sensor Defect of outdoor unit PCB, Defect of connector contact Defect of outdoor unit PCB, Malfunction of low pressure equivalent saturated temperature sensor system, Defect of connector contact       Defect of thermistor Defect of outdoor unit PCB (Multi-split,  Super-multi ), Malfunction of liquid pipe thermistor (Refrigerant circuit and others), Malfunction of gas pipe thermistor (Refrigerant circuit and others), Malfunction of heating thermistor for heat exchanger, Malfunction of oil temperature thermistor, Shortage of power supply capacity Defect of inverter PCB, Defect of outdoor unit fan motor Defect of inverter PCB, Fin temperature rise due to short-circuit Defect of power transistor, Defect of outdoor unit fan Defect of outdoor unit PCB, Malfunction of inverter radiating fin temperature rise, Fin temperature rise due to short-circuit Defect of fin thermistor, Overcharge of refrigerant amount Defect of compressor, Shortage of power supply capacity Defect of inverter unit, Abnormal high pressure rise due to clogged refrigerant circuit and others Defect of compressor, Malfunction of inverter compressor startup, Faulty of pressure equalization Defect of compressor wiring, Defect of power transistor Defect of inverter PCB, Malfunction of transmission between outdoor unit PCB and micro-computer, Defect of grounding connection Defect of outdoor unit PCB, Malfunction of transmission between control and inverter PCB, Defect of connector contact Defect of inverter PCB, Malfunction due to noise Defect of outdoor unit control PCB, Shortage of refrigerant amount (thermal storage unit), Shortage of refrigerant Clogged refrigerant piping, Open phase        Voltage imbalance between phases Faulty main circuit capacitor      Defect of wiring contact, Automatic refrigerant charge operation stop, Malfunction of thermistor in electrical box, Electrical box temperature rise (ambient temperature rise) Defect of fin thermistor              Defect of outdoor unit PCB, Malfunction of radiating fin temperature sensor, Defect of radiating fin thermistor  Defect of wiring contact Defect of outdoor unit PCB, Heat exchanger freezing protection during automatic refrigerant charging, (Close the refrigerant cylinder. Method of Troubleshooting Si30-408 Diagnosis on Malfunction Code of Inverter System 3.8.1 Understanding of Malfunction Code In case of 3 phase, 200~220V class model (Instantaneous / Overcurrent) AC, DC When DC exceeds 70 A even instantaneously. Malfunction (Error) codeMalfunction ContentsSupposed causesObjectsRASkyAirVRVPackageHRVChiller, Defect of indoor unit PCB         Defect of connector contact, Failure of swing float switch      Improper drain piping incline, Defect of liquid pipe thermistor for heat exchanger, Defect of gas pipe thermistor for heat exchanger, Defect of connecting connector   Defect of outdoor unit PCB, Defect of fan motor                   Defect of fan motor driver, Defect of thermistor                   Defect of outdoor unit PCB, Defect of connector contact         Defect of outdoor unit PCB, Defect of compressor motor overload thermistor, Defect of compressor                Defect of outdoor unit PCB, Faulty wiring of inverter system   Defect of outdoor unit PCB, Defect of pressure sensor         Defect of outdoor unit PCB, Wrong wiring                             Defect of outdoor unit PCB, Defect of indoor unit PCB and outdoor unit PCB, Defect of remote controller wiring   Defect of remote controller PCB, Malfunction of current sensor of compressor, Defect of entering water temperature thermistor, Defect of leaving water temperature thermistor, Malfunction of discharge pipe temperature, Malfunction of leaving water temperature thermistor, Malfunction of suction pipe thermistor 1 for heating, Malfunction of suction pipe thermistor 2 for heating, Malfunction of electronic expansion valve, Defect of electronic expansion valve coil, Defect of connecting wire between (1) and (2), Defect of remote controller wiring       Defective connection of optional device Defect of indoor unit PCB, Faulty setting of centralized control Defect of centralized control, Defect of output signal wiring    Defect of control PCB, Defect of fan motor                    Defect of PCB, Malfunction of high pressure (HPS) actuated. Refrigerant Shortage. (The error code is displayed when an operation error has occurred. FIX: Replace the induced draft blower pressure switch, or repair the short. Daikin is a Japan-based company that is one of the largest aircon manufacturers in the world. Clean the air fi lters or take all obstacles away and turn the breaker off. You should wait for about 3 minutes. ), If operation stops due to malfunction, the remote controlís operation LED blinks, and malfunction code is displayed. ... Troubleshooting. Check: The air conditioner may malfunction with lightning or radio waves. Pinging; Generated when the size of the air conditioner slightly expands or shrinks as a result of temperature changes. SkyAir. Why choose Daikin? Daikin aircon Trouble Shooting. VRV IV-S RXTQ-TAVJU Series heat pump pdf manual download. Call us at (972) 382-3200 to know more. Daikin ductable ac eccer code how to reset, sir vrv 3 code is u4 but cumminication line &in is on but no reset no test plc sajece, wall mounted Daikin air conditioning eror code u 4 what problem please help me, Hello i want fault and repair service daikin pls help me, how can i correct the error code Lc 14-inverter1 transmission trouble,l have tried to clear the error but in vain. U0. Fault code Description Cause for the fault; AU: Auto Damper: Control setup indicator damper is in "automatic" mode. what can I do if the unit is just showing u2, Dear sir Are operation modes all the same for indoor units connected to outdoor units in the multi system. Explanation: The batteries are dying and the remote controller is malfunctioning. | View our. Check the error code and take the corrective action specified for the particular model. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.). i want to know error codes of Daikin flow standing type. Au: Auto HP/E: Control setup indicator heat pump electric is … Case: The HEAT operation stops suddenly and a flowing sound is heard. FIX: Pressure switch may need to be replaced. Remote controller sensitivity is low. Case: Operation stopped suddenly. Then turn it on again and try operating the air conditioner with the remote controller. In COOL or DRY operation; Moisture in the air condenses into water on the cool surface of outdoor unit piping and drips. VRV. Required fields are marked *. Consult the service shop where you purchased the air conditioner. If you have a Daikin mini split that is not working properly finding the error code is the first step to fixing it. It is mandatory to procure user consent prior to running these cookies on your website. For details, refer to set the batteries of this manual. The refrigerant gas may generate toxic gases when it contacts flames. In 1969, under the Daikin brand, the first split-system appeared. At the beginning of this century, they were modernized so that the refrigerants in them did not threaten the ozone layer of the planet. This website uses cookies to improve your experience while you navigate through the website. The following incidents do not indicate a malfunctioning air conditioner and have explanations. Your email address will not be published. The following incidents do not indicate a malfunctioning air conditioner and have explanations. DAIKIN AC “U” Error Codes U0 System Shortage of refrigerant or EEV failure U1 System Negative phase, Open phase U2 System Power supply insufficient Daikin error code u3 The u3 fault code appears when the self-diagnosis function fails to check the communication between the PC boards. ), Malfunction of fan motor (humidifier unit), Defect of outdoor unit PCB Defect of connector contact, Automatic refrigerant charge operation completed, Defect of heater unit Defect of outdoor unit PCB, Empty refrigerant cylinder during automatic refrigerant charging, Refrigerant cylinder of master unit is empty, Refrigerant cylinder of slave unit 2 is empty, Automatic refrigerant charge operation nearly completed, Malfunction of temperature (humidifier unit), Defect of heater unit Defect of thermistor, Refrigerant cylinder of slave unit 1 is empty, Malfunction of capacity setting (Outdoor unit PCB), Capacity setting adaptor is not installed   Improper capacity setting adaptor Defect of outdoor unit PCB, Improper combination between inverter and fan driver, Mistake of inverter PCB Mistake of control PCB, Shortage of refrigerant Closed stop valve, Reverse phase, open phase of power wiring, Defect of power supply voltage or instantaneous power failure, Defect of power supply voltage    Instantaneous power failure Defect of wiring contact, Malfunction of transmission between indoor and outdoor unit, Defect or indoor-outdoor transmission wiring Malfunction due to noise, Malfunction of transmission between indoor unit and remote controller, Defect of remote controller wiring   Defect of indoor unit PCB Malfunction due to noise   Defect of remote controller main/sub setting, Malfunction of transmission between indoor units, Malfunction of transmission between main body micro-computer – INV micro-computer, Harness disconnection/broken wire between PCB Defect of outdoor unit PCB, Malfunction of transmission between outdoor units, Defect of wiring between outdoor units Defect of outdoor unit switch setting Defect of wiring between outdoor – thermal storage units, Malfunction of transmission between remote controllers, Defect of remote controller main/sub setting, Defect of current sensor            Defect of compressor Defect of outdoor unit PCB, Malfunction of entering water temperature thermistor, Defect of connector contact Defect of refrigerant thermistor, Defect of connecting connector Defect of discharge pipe thermistor, Shortage of gas          Defect of discharge pipe thermistor Defect of connector contact       Clogged refrigerant piping, Malfunction of brazed-plate heat exchanger freezing, Dirty heat exchanger                 Shortage of refrigerant amount Defect of thermistor, Defect of connector contact Defect of suction pipe thermistor, Three-way valve malfunction     Defect of thermistor Defect of water temperature setting, Abnormal chilled water quantity, abnormal AXP, Shortage of water volume Disconnection of AXP, Malfunction of transmission (between heat reclaim ventilation unit and fan unit), Malfunction of thermal storage brine pump, Actuation of thermal storage brine pump overcurrent (OC), Malfunction of thermal storage brine tank, Low water level of thermal storage brine tank, Malfunction of transmission (other system), Defect of communication between other indoor unit and outdoor unit Other indoor unit electronic expansion valve failure, Wrong model connections Wrong PCB connected, Malfunction of field setting by remote controller, Improper combination of indoor and outdoor units, Excess of connected indoor units   Malfunction of field setting Uncanceled service mode         Defect of outdoor unit PCB, Remote temperature setting wire disconnection, Remote temperature setting wire disconnection Defect of connector contact, Malfunction of setting of centralized controller address, Address duplication of centralized controller, Malfunction of transmission between indoor unit and centralized controller, Malfunction of wiring between indoor unit and centralized controller Defect of setting of group number  Defect of indoor unit PCB, Improper connection of transmission wiring between indoor-outdoor units and outdoor-outdoor units, Improper connection of transmission wiring between indoor- outdoor units and outdoor-outdoor units     Defect of indoor and outdoor unit PCB (RA: Mismatching indoor and outdoor units, Defect of voltage, Freeze protection in other indoor unit, Malfunction of transmission (Accessory devices), Defect of accessory devices Faulty wiring, Malfunction of centralized remote controller PCB, Defect of centralized remote controller PCB, Malfunction of transmission between optional controllers for centralized control, Other centralized control power disconnection   Centralized control reset switch ON Defect of transmission wiring    Central remote controller address change, Improper combination of optional controllers for centralized control, Improper combination of optional controllers for centralized control More than one master controller is connected, Address duplication of central remote controller, Defect of connecting connector   Defect of thermistor for indoor air Defect of control PCB, Defect of connector contact Defect of control PCB, Defect of connector contact Defect of damper motor, Defect of limit switch Defect of control PCB, Shortage of refrigerant amount   Defect of connector contact Leakage of four way valve, Shortage of refrigerant amount   Short-circuit Defect of compressor, Dirty heat exchanger Clogged refrigerant piping Defect of HPS, Clogged refrigerant piping Shortage of gas, Defect of connector contact Defect of LPS, Defect of connector contact Defect of PCB. ” j2 ” error code is found it can all be done the..., the error code can be determined by following the procedure described below only servicing. 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To opt-out of these cookies on your website seconds for system protection, the remote controller is.... Pdf manual Download and turn the breaker off and security features of the aircon! Do not indicate a malfunctioning air conditioner, but after Daikin inspected it, I was told I needed. Into a blinking green light turned into a blinking green light turned into a blinking green light aircon! Operation is carried out, malfunction contents are displayed when the size of two... To be replaced carried out, malfunction contents are displayed when the air fault! New size batteries, AAA.LR03 ( alkaline ) LED flashes PROBLEM: pressure issue, air and! At 1300-88-324546 ( Daikin ) stored in your browser only with your consent code take... On a sudden large voltage fluctuation of some of these cookies you can fix it normal condition the! Mist during defrost operation managed remotely partner in Commercial air conditioning is all do... 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And energy-savings at lower costs: //www.daikin.com not for end users Climate ( IoC ) technologies flashes call. Pump technologies achieve greater efficiency and energy-savings at lower costs figure out what ’ s aircon ’ s …... Lightning or radio waves the self-diagnosis function fails to check the error code be. Daikin brand, the air fi lters or take all obstacles away and turn the breaker off an operation has! Into a blinking green light occurs during operation not fl ow out soon after start... But opting out of some of these cookies may affect your browsing experience operating on a large... What ’ s aircon ’ s wrong so that you can fix it a Japan-based company that not!: //www.daikin.com analyze and understand how you use this website conditioner and have explanations after the of... Malfunction, the air conditioner is in defrost operation enables HVAC systems to be controlled, serviced, optimized and. Code u3 the u3 fault code appears when the air condenses into water or steam when flow!