Samsung Home Automation

The indoor unit cannot receive any data from the outdoor unit, indicating a communication breakdown between these two components.

This error is displayed on the indoor unit and indicates a problem with data exchange between the indoor and outdoor units.

This error occurs when two or more devices within the system have been assigned the same address, preventing proper identification.

A communication problem has been detected between the main control board (PBA) of the Hydro unit and its control kit.

The indoor unit's temperature sensor is either short-circuited or open-circuited, meaning it cannot accurately read room temperature.

The evaporator inlet (EVA IN) temperature sensor of the indoor unit has a short or open circuit, leading to incorrect readings vital for system operation.

The evaporator outlet (EVA OUT) temperature sensor of the indoor unit has a short or open circuit, affecting the system's ability to monitor refrigerant temperatures.

The evaporator inlet (EVA IN) temperature sensor has become detached from its position on the EVA IN pipe in the indoor unit.

The evaporator outlet (EVA OUT) temperature sensor has become detached from its position on the EVA OUT pipe in the indoor unit.

The temperature sensors responsible for monitoring the heat exchanger's inlet and outlet on the indoor unit are detached.

The indoor unit's cleaning fan is not providing correct RPM (rotations per minute) feedback, suggesting an issue with its operation or sensor.

The electronic expansion valve (EEV) in the indoor unit is detected as being open, preventing proper refrigerant flow control. This is a persistent issue (second detection).

The electronic expansion valve (EEV) in the indoor unit is detected as being closed, preventing proper refrigerant flow. This is a persistent issue (second detection).

The floating switch in the indoor unit, typically used for condensate overflow detection, has activated. This is a persistent issue (second detection).

The indoor unit's main fan is experiencing an RPM feedback error, meaning its rotation speed cannot be correctly measured or controlled.

The outdoor unit is preparing for one mode (e.g., cooling), but some indoor units are trying to operate in the opposite mode (e.g., heating), causing a conflict.

There is a physical problem with the parts or circuit of the EEPROM (Electrically Erasable Programmable Read-Only Memory) on the Microcontroller (MICOM).

Either the settings configured for the indoor unit's remote controller are incorrect or absent, or there's an error in the outdoor unit's EEPROM data.

Both cooling and heating solenoid valves in the MCU (Microcontroller Unit) are detected as open simultaneously, which is an abnormal state (first detection).

Both cooling and heating solenoid valves in the MCU (Microcontroller Unit) are detected as open simultaneously. This is a persistent issue (second detection).

The communication and power cables for the indoor unit have been incorrectly wired, which can cause damage or prevent proper operation.

There is a connection issue or problem with the SPi (Serial Peripheral interface), which is critical for internal communication within the unit.

During a pipe inspection, the EVA IN (evaporator inlet) sensor showed no temperature changes, or an indoor unit with a wrong address is reporting temperature changes.

During a pipe inspection, the EVA OUT (evaporator outlet) sensor showed no temperature changes, or an indoor unit with a wrong address is reporting temperature changes.

The thermal fuse in the indoor unit has become disconnected or has tripped, often due to overheating, acting as a safety measure.

A communication error between indoor and outdoor units, potentially due to an incorrect installation number, a duplicate indoor unit address, or a faulty communication cable.

A general communication error affecting all indoor units, or an issue specifically with the outdoor unit's communication cable.

The main outdoor unit is unable to communicate with a sub outdoor unit within the system, interrupting coordinated operation.

A communication error affecting all Printed Board Assemblies (PBAs) within the outdoor unit's C-Box, or a general communication cable error within that enclosure.

A specific communication error related to various Printed Board Assemblies (PBAs) within the system, identified by sub-codes C001 to C004.

A single indoor unit has been incorrectly connected to two MCU (Microcontroller Unit) ports that are not meant to be used in series.

The rotary switch on the MCU (Microcontroller Unit), used for setting indoor unit addresses, has been incorrectly configured with three or more units having the same address.

The DC voltage sensor for Fan2 (likely an outdoor unit fan) is reporting an error, indicating a potential problem with the fan's power supply or the sensor itself.

The temperature sensor on the heatsink of Fan2 (likely an outdoor unit fan) is reporting an error, which could indicate overheating or a sensor malfunction.

Inverter PBA2 is overheating due to a contact failure on its Intelligent Power Module (IPM), preventing proper heat dissipation.

The compressor has stopped operating because the system detected excessively high pressure, activating a safety shutdown to prevent damage.

The compressor has stopped due to activation of low-pressure protection, which can be caused by refrigerant leakage or an undercharged system.

The compressor has stopped because the discharge temperature exceeded safe limits, triggering a protection shutdown to prevent damage.

For a three-phase outdoor unit, there's either a reversal in the phase wiring (R-S-T-N) or a complete phase failure, or an incorrect connection on the three-phase input.

The compressor has stopped because the system detected an abnormal compression ratio, indicating an issue with how the refrigerant is being compressed.

An issue with the Electronic Expansion Valve (EEV) for Economized Vapor Injection (EVI) or Enhanced Sub-Cooling (ESC), possibly a leak, intercooler leak, or incorrect connector.

The system has detected a refrigerant leak, which can lead to reduced performance, increased energy consumption, and potential damage if not addressed.

The system has restricted heating mode operation because the ambient air temperature is too high for efficient or safe heating.

The system has restricted cooling mode operation because the ambient air temperature is too low for efficient or safe cooling.

The system is restricting refrigerant charging while in heating mode because the outdoor air temperature is above 15°C, which can affect accurate charging.

The unit's operation is prohibited because a significant pressure drop has been detected in the system, indicating a potential problem with refrigerant flow or leakage.

The Crankcase Heater (CCH) on the outdoor unit has become detached from its proper position, which can affect compressor startup in cold conditions.

Fan1 (typically an outdoor unit fan) has failed to operate correctly, which can lead to overheating and reduced system performance.

The motor wire for Fan1 (typically an outdoor unit fan) is either disconnected or has a poor connection, preventing the fan from operating.

Fan1 (typically an outdoor unit fan) has locked up or is unable to rotate freely, triggering an error code.

There's an issue with the Zero-Phase-Control (ZPC) detection circuit or a general power failure is affecting the unit, disrupting its electrical synchronization.

The motor of Fan1 in the outdoor unit has overheated and stopped operation as a protective measure to prevent damage.

The Intelligent Power Module (IPM) associated with Fan1 has overheated, indicating a potential issue with heat dissipation or component failure.

Inverter compressor 1 has failed to operate correctly, which is critical for the system's heating and cooling functions.

The compressor has stopped due to activation of full current control, or an error indicating low current on Current Transformer (CT2).

Inverter compressor 1 is drawing excessive electrical current, triggering a safety shutdown to prevent damage to the compressor or electrical components.

The voltage supplied to or sensed by inverter compressor 1 is outside its permissible limits, leading to an operational error.

Inverter PBA1 (Printed Board Assembly) is experiencing either excessively high or low voltage, which can disrupt its operation and potentially damage components.

A wire connected to compressor 1 has become disconnected or was never properly connected, preventing the compressor from operating.

The output current sensor on Inverter PBA1 is reporting an error, meaning the system cannot accurately monitor the current output from the inverter.