A
Andrea ChurchSep 13, 2025
What to do if my Samsung AC018BXADCH Air Conditioner shows E403 error?
- PPeggy TaylorSep 13, 2025
If your Samsung Air Conditioner is showing the E403 error, check the outdoor condenser.
To Next PageTo Next PageWhat to do if my Samsung AC018BXADCH Air Conditioner shows E403 error?
If your Samsung Air Conditioner is showing the E403 error, check the outdoor condenser.
General| Brand | Samsung |
|---|---|
| Model | AC018BXADCH |
| Category | Air Conditioner |
| Language | English |
General service precautions for electrical parts, connections, and assembly.
Handling PCBs safely, avoiding static electricity, and customer repair warnings.
General safety warnings regarding power, wiring, outlets, and grounding.
Cautions related to gas release, frostbite, suffocation, and container handling.
Procedure for disassembling the panel and filter of 1way CST indoor units.
Continues indoor unit disassembly: purification control box cover, dust sensor, HVPS screws.
Continues indoor unit disassembly: step motor, hinges, sensors, guide air, and plate.
Procedure for disassembling the panel and filter of JSF-1,2 PANEL indoor units.
Continues panel disassembly: opening grille, separating clips, filter, cover screws, and panel.
Disassembly of electrical parts: removing screws, separating connectors from PCB, and electrical parts.
Disassembly of drain pump: removing screws, loosening band ring, separating drain hose and pump.
Disassembly of drain pump: removing screws from cover, holder fan, cross fan, and separating cross fan.
Procedure for disassembling the panel of 4way CST (AC***BN4DCH) indoor units.
Procedure for disassembling the panel of 4way CST (600x600) : AC***BNNDCH indoor units.
Continues panel disassembly: disassembling bolts, pressing hangers, and removing panel.
Disassembly of blade: removing hinge-blade and blade.
Disassembly of display PBA: removing cover display and cover PBA.
Continues display PBA disassembly: disconnecting connector wire, removing humidity sensor, and step motor.
Disassembly of control box: disconnecting connector wire, unscrewing screws, and separating control box.
Disassembly of bell-mouth: unscrewing and pushing bell-mouth to remove.
Continues evaporator disassembly: removing cover pipe screw, in/out pipe, and heat exchanger.
Procedure for disassembling the panel of 360 Cassette (AC***BN6DCH) indoor units.
Continues panel disassembly: rotating grille, removing safety clip, filter, and control box screws.
Continues control box disassembly: removing screws, pulling cover, and avoiding hooks.
Continues control box disassembly: separating connectors, ground screw, and top cover & drain pan screws.
Continues top cover/drain pan disassembly: pulling booster fan connector, removing screws, and pushing hook.
Continues top cover/drain pan disassembly: removing screws, pulling hook, and separating cover.
Disassembly of drain pump and hose: separating drain hose from pump.
Continues drain pump/hose disassembly: removing screws, separating drain hose, and fan motor/cross fan.
Disassembly of drain pan: Cabinet top evap, drain cushion.
Disassembly of evaporator: Cover pipe, support evap, refrigerant sensor, inlet air sensor, EEV wire, and evaporator.
Disassembly of heat exchanger: Purging refrigerant, unscrewing screws, separating pipes, separating heat exchanger.
Disassembly of motor & blower: Disconnecting motor wire, bracket motor, case blower top/out.
Disassembly of fan & motor: Taking fan propeller apart, unscrewing motor screws, separating motor wire connector.
Details on test operation modes and display indications, including error codes.
Details on version check and address setting procedures using the K4 push type.
Explains the self-diagnosis function (Auto check) for installation status and product integrity.
Lists indoor unit error codes and corresponding LED display patterns for 360 Cassette models.
Lists indoor unit error codes, their causes, measures, product operations, and diagnosis methods.
Lists abnormal conditions and LED lamp display patterns for 4way Cassette (600x600) models.
Lists abnormal conditions and LED lamp displays for 1way Cassette models.
Lists abnormal conditions and corresponding LED indicators for Home Duct and Duct S models.
Lists abnormal conditions and error codes for RAC (AC***BNADCH) models.
Lists abnormal conditions and error codes for RAC (AC***BNTDCH) models.
Lists abnormal conditions and LED display patterns for Console (AC***BNJDCH) models.
Continues abnormal conditions and LED display patterns for Console models, including EEPROM errors.
Troubleshooting steps for indoor temperature sensor error (E121), including flowchart and resistance table.
Troubleshooting steps for indoor heat exchanger sensor error (E122), including flowchart and resistance table.
Troubleshooting flowchart for indoor unit float sensor error (E153), including PCB checks and parts replacement.
Troubleshooting flowchart for indoor fan error (E154), checking motor connector, rotation, and voltage.
Troubleshooting steps for EEPROM circuit failure (E162), including checking assembly and soldering.
Troubleshooting flowchart for communication error (E202) between indoor and outdoor units.
Troubleshooting steps for whistling noise in low wind mode, focusing on fan and motor inspection.
Initial diagnosis steps for outdoor unit power not turning on, focusing on power connections and checks.
Continues diagnosis for outdoor unit power issues, checking power parts and fan motor.
Troubleshooting flowchart for indoor/outdoor communication error (E202).
Details on communication IC and TVS-Diode measurement for E202 error.
Troubleshooting flowchart for communication error (E203) between outdoor unit INV and MAIN MICOM.
Troubleshooting for outdoor sensor errors (E221, E231, E251, E320), including resistance value tables.
Troubleshooting flowchart for compressor down due to freezing control (E403).
Troubleshooting flowchart for pipe blockage error (E422), including checks for valves, piping, and EEV.
Troubleshooting flowchart for outdoor unit fan error (E458, E475), checking power, connectors, and fan motor.
Troubleshooting for compressor starting/rotation errors (E461, E467), checking power, wiring, and noise.
Continues compressor error troubleshooting, checking wire assembly and PCB replacement.
Troubleshooting flowchart for full current/PFC over-current errors (E462, E484).
Troubleshooting flowchart for IPM (Over Current) error (E464), checking installation and wiring.
Continues IPM error troubleshooting, checking compressor wire assembly and PCB replacement.
Troubleshooting for DC LINK errors (E466, E483, E488), checking power, reactor, and fuses.
Continues DC LINK error troubleshooting, checking terminal block and power terminal box connections.
Troubleshooting flowchart for gas leakage error (E554), checking installation, valves, and refrigerant.
Continues gas leakage error troubleshooting, checking wiring, pipes, and replacing PCB.
