Samsung AC & Climate Systems

The indoor unit cannot receive data from the outdoor unit. This indicates a communication problem between the two main components of the system.

There is a communication error between the indoor unit and the outdoor unit. This message is typically displayed on the indoor unit.

This error occurs when two or more devices in the system have been assigned the same address. Each device needs a unique address to communicate properly.

This error indicates a communication failure between the Hydro unit's main circuit board (PBA) and the Control kit's circuit board (PBA).

The temperature sensor inside the indoor unit is either short-circuited or has an open connection. This prevents accurate temperature readings.

The EVA IN temperature sensor for the indoor unit has a short circuit or an open connection, affecting temperature readings for that specific sensor.

The EVA OUT temperature sensor for the indoor unit is experiencing a short circuit or an open connection, impacting temperature monitoring.

The EVA IN temperature sensor has become detached from the EVA IN pipe. This will lead to inaccurate temperature readings.

The EVA OUT temperature sensor has detached from its designated pipe. This will cause incorrect temperature measurements.

Both the heat exchanger inlet and outlet temperature sensors have become detached. Accurate heat exchange monitoring is compromised.

The system is not receiving correct speed (RPM) feedback from the indoor unit's cleaning fan. This may affect the fan's performance or operation.

The Electronic Expansion Valve (EEV) in the indoor unit is detected as being open when it should not be. This is the second detection of this issue.

The Electronic Expansion Valve (EEV) in the indoor unit is detected as being closed when it should not be. This is the second detection of this problem.

The floating switch, likely related to condensate drainage, has triggered an error. This is the second time this error has been detected.

The system is not receiving proper speed (RPM) feedback from a component within the indoor unit. This could affect the unit's overall operation.

This error occurs when the outdoor unit is preparing for cooling (or heating) and one or more indoor units are attempting to operate in the opposite mode (heating or cooling).

There is an error with the EEPROM memory on the MICOM (microcontroller) unit. This usually indicates a physical problem with the component or its circuit.

The indoor unit's remote controller has an incorrect setting or is missing required input. Alternatively, the outdoor unit's EEPROM data may be corrupted.

The system has detected, for the first time, that both the cooling and heating solenoid valves (SOL V/V) controlled by the MCU are open simultaneously. This should not happen.

This is the second detection of an error where both the cooling and heating solenoid valves are open at the same time. This indicates a persistent problem.

The communication cable and the power cable for the indoor unit have been crossed or improperly wired together.

There is a connection error or a general problem with the SPi interface. The SPi is a communication protocol or interface used by the system.

During pipe inspection, no temperature change is detected at the EVA IN sensor, or the temperature reading is incorrect. This could also be related to a wrong unit address.

The EVA OUT sensor does not show a temperature change during pipe inspection, or it reports an incorrect temperature. This might also be due to a wrong unit address.

The thermal fuse within the indoor unit has been disconnected or has blown. This is a safety feature that cuts power if overheating occurs.

A communication error exists between the indoor and outdoor units. This can be caused by installation number settings, repeated indoor unit addresses, or cable issues.

A communication error is affecting all indoor units communicating with the outdoor unit. This typically points to an issue with the outdoor unit's communication cable or system.

This error occurs when there is a communication problem between the main outdoor unit and a sub-outdoor unit in a multi-system setup.

There is a communication error among all Printed Circuit Boards (PBAs) within the outdoor unit's Control Box (C-Box). This indicates a serious internal issue.

Communication errors are detected on specific Printed Circuit Boards (PBAs) within the outdoor unit: HUB PBA, FAN PBA, or Inverter PBA (INV1/INV2). Specific error codes like E206-C001 indicate which PBA is affected.

A single indoor unit is connected using two MCU ports that are not configured in series, which is an incorrect setup.

Three or more indoor units have been assigned the same address. Each unit must have a unique address for proper system communication.

The DC voltage sensor for Fan 2 in the outdoor unit is reporting an error. This may affect the fan's speed control or operation.

The temperature sensor monitoring the heat sink of Fan 2 in the outdoor unit is reporting an error.

The outdoor unit's Inverter PBA2 has an IPM (Intelligent Power Module) that is overheating, likely due to a contact failure. This is a critical fault.

The compressor has stopped operating because the system's high pressure protection has been activated. This is a safety measure to prevent damage.

The compressor has stopped due to low pressure protection being triggered, which can be caused by refrigerant leakage or insufficient refrigerant charge.

The compressor has stopped because its discharge temperature has exceeded safe limits, triggering protection controls.

For 3-phase outdoor units, this error indicates that the incoming power phases (R-S-T-N) are reversed or one phase is missing. This can damage the compressor.

The compressor has stopped because the ratio between its discharge and suction pressures is abnormal. This suggests an internal issue with the compressor or refrigerant circuit.

The Enhanced Vapor Injection (EVI) Electronic Expansion Valve (EEV) is experiencing leakage, either externally or internally within the intercooler, or has an incorrectly inserted connector.

The system has detected a refrigerant leak. This is a critical issue that requires immediate attention to prevent system damage and environmental harm.

Heating mode operation is restricted because the ambient air temperature is too high. The system prevents heating to avoid issues in such conditions.

Cooling mode operation is restricted because the ambient air temperature is too low. Operating in cooling under these conditions can cause problems.

Refrigerant charging is restricted during heating mode if the outdoor air temperature is above 15°C. This is a specific operational constraint.

The system's operation is prohibited because a significant pressure drop has been detected. This indicates a potential issue within the refrigerant circuit.

The CCH (likely referring to a specific component like a control chip or sensor) has become detached. This could affect the unit's control or monitoring functions.

Fan 1 in the outdoor unit is not operating correctly. This could be due to a motor issue, electrical problem, or obstruction.

The motor wire for Fan 1 in the outdoor unit is not properly connected. This prevents the fan from operating.

Fan 1 in the outdoor unit is experiencing a lock error, meaning it is unable to rotate freely or is jammed.

There is an issue with the ZPC (Zero Power Consumption) detection circuit, or a power failure affecting this circuit. This may impact specific functions of the unit.

The motor of Fan 1 in the outdoor unit has overheated. This can be caused by prolonged operation, lack of airflow, or an internal motor fault.

The Intelligent Power Module (IPM) associated with Fan 1 in the outdoor unit has overheated. This indicates a potential issue with the fan's power control.

The inverter compressor (Compressor 1) is not operating correctly. This could be due to a motor fault, control issue, or power problem.

The compressor has stopped operating due to either excessive current (full current control) or critically low current detected by CT2 (Current Transformer 2).

Inverter compressor 1 is drawing more current than its specified limits, triggering an over-current protection.

Inverter compressor 1 has encountered a voltage limit error. This could mean the voltage supplied to the compressor is outside acceptable operational limits.

The inverter PBA1 (Printed Board Assembly 1) is experiencing either overvoltage or undervoltage conditions. This can damage the PBA and connected components.

A wire connected to compressor 1 is not properly connected or has become disconnected. This will prevent the compressor from operating correctly.

The output current sensor on the inverter PBA1 is reporting an error. This sensor monitors the current supplied to the compressor, and its failure affects control.