Samsung Ducted Outdoor Units

The wired remote controller displays error code 101, indicating that it cannot establish or maintain communication with the indoor unit it is connected to. This prevents control of the indoor unit.

The wired remote controller displays error code 102, indicating a communication timeout error between the indoor/outdoor unit. This means the remote has lost communication with the system for an extended period.

The wired remote controller displays error code 121, indicating an open or short circuit with the indoor unit's room temperature sensor. This sensor is crucial for accurate temperature control.

The FJM outdoor unit displays E1 01, indicating a communication error where one or more indoor units are unable to receive data from the outdoor unit. This prevents coordinated system operation.

The FJM outdoor unit displays E1 02, indicating that it has received abnormal communication data from an indoor unit more than 60 times. This suggests a persistent communication issue from an indoor component.

The FJM outdoor unit displays E1 90, indicating that the system failed to complete the mandatory pipe check operation. This check verifies correct refrigerant piping connections and is typically performed after installation.

The FJM outdoor unit displays E1 99, indicating that the pipe check operation was not performed, usually because the system was put into operation after installation using auto-addressing mode without completing this necessary check.

The FJM indoor unit displays E1 n 01 (where 'n' is an indoor unit identifier), indicating it cannot receive data. This points to a problem with the communication link to the rest of the system.

The FJM indoor unit displays E1 n 02, indicating a communication issue where the outdoor unit is unable to communicate with this specific indoor unit. This can be caused by problems with the indoor unit's board or interference from other units.

The FJM indoor unit displays E1 n 21, indicating an open or short circuit in the indoor unit's room temperature sensor. This prevents the unit from accurately detecting the room temperature.

The FJM indoor unit displays E1 n 22, indicating an open or short circuit in the heat exchanger 'in' temperature sensor. This sensor monitors the refrigerant temperature entering the indoor coil.

The FJM indoor unit displays E1 n 23, indicating an open or short circuit in the heat exchanger 'out' temperature sensor. This sensor monitors the refrigerant temperature exiting the indoor coil.

The FJM indoor unit displays E1 n 28, indicating that the heat exchanger 'in' temperature sensor has become disconnected or detached from its position. This prevents accurate temperature readings.

The FJM indoor unit displays E1 n 29, indicating that the heat exchanger 'out' temperature sensor has become disconnected or detached from its position. This disrupts temperature monitoring of the indoor coil.

The FJM indoor unit displays E1 n 30, indicating that both the heat exchanger 'in' and 'out' temperature sensors are detected as detached or disconnected. This is a critical error for indoor coil temperature monitoring.

The FJM indoor unit displays E1 n 53, indicating that the float switch has detected a secondary (higher) level of water, signaling a potential condensate drainage problem. This can lead to water overflow.

The FJM indoor unit displays E1 n 54, indicating that the indoor unit's fan motor is not operating correctly. This prevents proper air circulation and heat exchange.

The FJM indoor unit displays E1 n 61, indicating a conflict where multiple indoor units are attempting to operate in different, incompatible modes (e.g., one cooling, one heating) in a system that doesn't support mixed-mode operation.

The FJM indoor unit displays E1 n 62, indicating an error with the EEPROM (Electrically Erasable Programmable Read-Only Memory) on the indoor unit's PCB. This can involve corrupted data or a faulty memory chip.

The FJM indoor unit displays E1 n 63, indicating an error with the option code settings configured for the indoor unit. Option codes define specific features and operational parameters for the unit.

The FJM indoor unit displays E1 n 85, indicating that the communication or power cables between the indoor and outdoor units are incorrectly wired. This prevents proper system operation.

The FJM indoor unit displays E1 n 86, indicating a malfunction with the MPI (Multi-Purpose Inverter) component within the indoor unit. This component is crucial for motor control and efficiency.

The FJM outdoor unit displays E2 01, indicating that the count of connected indoor units does not match the configuration set for the outdoor unit. This is a system setup discrepancy.

The FJM outdoor unit displays E2 02, indicating a general communication failure between the outdoor unit and one or more indoor units. This prevents the system from functioning as intended.

The FJM indoor unit displays E2 n 51, reporting an open or short circuit error with the compressor discharge sensor located in the outdoor unit. This means the indoor unit is detecting an outdoor unit problem.

The FJM indoor unit displays E2 n 59, indicating that it has detected a general error originating from the outdoor unit. This means the outdoor unit is experiencing a fault, but the indoor unit cannot specify the exact issue.

The outdoor unit's PCB LED displays E201 when the number of indoor units connected does not match the outdoor unit's configuration settings. This indicates an issue with system setup.

The outdoor unit's PCB LED displays E202 when there is no proper communication between the indoor unit and the outdoor unit's main control board. This can prevent the system from operating correctly.

The outdoor unit's PCB LED displays E203 when communication between the main PCB and the inverter PCB times out for more than one minute. This suggests an internal communication issue within the outdoor unit.

The outdoor unit's PCB LED displays E221 when there is an open or short circuit detected in the outdoor temperature sensor. This prevents the system from accurately reading the ambient outdoor temperature.

The outdoor unit's PCB LED displays E231 when an open or short circuit is detected in the condenser temperature sensor. This sensor monitors the temperature of the outdoor coil, crucial for efficient operation.

The outdoor unit's PCB LED displays E251 when an open or short circuit is detected in the compressor's discharge temperature sensor. This sensor helps protect the compressor from overheating.

The outdoor unit's PCB LED displays E320 when an open or short circuit is detected in the Overload Protection (OLP) sensor. This sensor is crucial for protecting the compressor from excessive loads.

The FJM outdoor unit displays E4 01, indicating that freezing conditions have been detected on the outdoor coil, causing the compressor to stop as a safety measure. This can be caused by various factors affecting heat exchange.

The FJM outdoor unit displays E4 04 when its safety control has detected an overload condition, leading to the compressor stopping to prevent damage. This suggests the unit is under too much strain.

The FJM outdoor unit displays E4 16 when it detects an excessively high compressor discharge temperature, causing the system to stop as a safety measure. This is critical for compressor longevity.

The FJM outdoor unit displays E4 60 when the communication cable between the indoor and outdoor units is either incorrectly wired or mismatched, disrupting essential data flow.

The FJM outdoor unit displays E4 69 when the DC link voltage sensor, which monitors critical voltage levels in the inverter circuit, is faulty. This can impact the stability and control of the compressor.

The FJM outdoor unit displays E4 72, indicating that the inverter's microcomputer (micom) has detected an issue with the zero-crossing signal. This signal is crucial for the proper synchronization and operation of the inverter.

The outdoor unit's PCB LED displays E403 when it detects freezing conditions on the outdoor coil, even though the compressor is not running. This suggests an issue with the outdoor condenser or refrigerant flow.

The outdoor unit's PCB LED displays E404 when its overload protection activates, causing the compressor to stop. This indicates a potential issue with the compressor or the system's ability to handle the load.

The outdoor unit's PCB LED displays E416 when the compressor's discharge temperature becomes excessively high, triggering a safety shutdown to prevent damage. This usually indicates system stress.

The outdoor unit's PCB LED displays E440 when heating operation is not available because the outdoor air temperature is over 30°C (86°F). This is a normal operational limit, not a fault.

The outdoor unit's PCB LED displays E441 when cooling operation is not available because the outdoor air temperature is lower than -5°C (23°F). This is a normal operational limit, not a fault.

The outdoor unit's PCB LED displays E458 or E475 when there is a malfunction detected in either Fan 1 (E458) or Fan 2 (E475) of the outdoor unit's Brushless DC (BLDC) motor.

The outdoor unit's PCB LED displays E461 when the compressor fails to start correctly. The system will attempt to start the compressor multiple times before reporting this error.

The outdoor unit's PCB LED displays E462 when an overcurrent condition is detected in the primary circuit, causing the system to trip for protection. This prevents damage from excessive electrical current.

The outdoor unit's PCB LED displays E463 when an excessive current flow is detected, specifically an overcurrent trip related to the Power Factor Correction (PFC) circuit. This triggers a protective shutdown.

The outdoor unit's PCB LED displays E464 when the Inverter Power Module (IPM) or IGBT module experiences an overcurrent condition. This indicates a potential fault in the inverter circuit responsible for motor control.

The outdoor unit's PCB LED displays E465 when the compressor detects an overload condition, meaning it is working too hard. This can be a protective measure to prevent damage.

The outdoor unit's PCB LED displays E466 when the DC-Link voltage within the inverter circuit is outside its normal operating range (either too low or too high). This indicates a power supply or inverter component issue.

The outdoor unit's PCB LED displays E467 when a wiring connection to the compressor is detected as missing or disconnected. This will prevent the compressor from operating.

The outdoor unit's PCB LED displays E468 when the current sensor in the outdoor unit is reporting a fault. This sensor measures the electrical current draw, essential for system protection and operation.

The outdoor unit's PCB LED displays E471 when an error occurs with the EEPROM (Electrically Erasable Programmable Read-Only Memory) on the outdoor unit's main board. This can indicate corrupted data or a faulty memory chip.

The outdoor unit's PCB LED displays E474 when a temperature sensor associated with the Inverter Power Module (IPM) or Power Factor Correction Module (PFCM) reports an error. This helps monitor critical component temperatures.

The outdoor unit's PCB LED displays E484 when the Power Factor Correction (PFC) circuit in the outdoor unit experiences an overload condition. This indicates excessive stress on the power electronics.

The outdoor unit's PCB LED displays E500 when the Inverter Power Module (IPM) within the outdoor unit detects that it is overheating. This is a critical safety measure to protect the module.

The outdoor unit's PCB LED displays E554 when the system detects a refrigerant gas leak. This indicates a potential loss of refrigerant, which can severely impact performance and damage the unit.

The outdoor unit's PCB LED displays E556 when the cooling or heating capacity of the installed indoor units does not match the outdoor unit's specifications. This can lead to inefficient operation or system faults.

The outdoor unit's PCB LED displays E557 when there is a discrepancy in the option code settings among multiple indoor units, specifically for DPM (Digital Power Module) systems. Consistent settings are crucial for coordinated operation.