Samsung Intesis Home Automation

The indoor unit is experiencing a communication fault and cannot send or receive data from the outdoor unit. This typically indicates a problem with the connection between these two main components of your HVAC system.

A communication problem exists specifically between an indoor unit and the outdoor unit, often displayed on the indoor unit. This means the units are unable to exchange necessary operational data.

This error occurs when two or more devices in your system, such as indoor or outdoor units, have been assigned the same network address. This creates a conflict and prevents proper communication.

There is a communication fault specifically between the Hydro unit HT (Main PBA) and its Control kit PBA. This can prevent the hydro unit from functioning correctly.

The indoor unit's temperature sensor is reporting an electrical fault, indicating either a short circuit or an open connection. This prevents accurate temperature readings.

The evaporator inlet (EVA IN) temperature sensor in the indoor unit has an electrical issue, such as a short circuit or an open connection. This affects the unit's ability to monitor refrigerant conditions.

The evaporator outlet (EVA OUT) temperature sensor in the indoor unit is experiencing a fault, indicated by a short or open circuit. This impacts the system's ability to properly control refrigerant flow.

The evaporator inlet (EVA IN) temperature sensor in the indoor unit has become physically detached from the EVA IN pipe. This means the unit cannot accurately measure the refrigerant temperature at this critical point.

The evaporator outlet (EVA OUT) temperature sensor in the indoor unit has become physically detached from the EVA OUT pipe. This leads to inaccurate refrigerant temperature readings and potentially improper system operation.

Both the inlet and outlet temperature sensors for the indoor unit's heat exchanger are physically detached. This significant sensor detachment can cause major operational issues and incorrect temperature control.

The indoor unit's cleaning fan is not providing correct RPM (rotations per minute) feedback. This suggests the fan isn't operating as expected or its sensor is faulty, impacting indoor air quality functions.

The Electronic Expansion Valve (EEV) in the indoor unit is detected as being open when it should be closed or regulating. This is a confirmed issue, preventing proper refrigerant control.

The Electronic Expansion Valve (EEV) in the indoor unit is detected as being closed when it should be open or regulating. This is a confirmed issue, restricting refrigerant flow and proper operation.

The indoor unit's floating switch, which detects condensate overflow, has triggered for a second time. This indicates a persistent problem with the condensate drain system.

The indoor unit's main fan motor is not providing correct RPM (rotations per minute) feedback. This suggests a problem with the fan's operation or its speed sensing mechanism.

This error occurs when the outdoor unit is preparing to operate in one mode (e.g., cooling) while an indoor unit is attempting to run in a conflicting mode (e.g., heating). This is common in multi-zone systems.

This indicates a physical problem with the parts or circuit of the Microcontroller (MICOM) EEPROM. The EEPROM is responsible for storing critical operating data, and a fault here suggests a hardware failure.

This error signifies an issue with either incorrect or missing option settings from the indoor unit's remote controller, or a problem with the outdoor unit's EEPROM data. Both affect the system's configured operation.

This error occurs when the cooling and heating solenoid valves within the MCU are detected as being open simultaneously for the first time. This indicates a refrigerant flow conflict.

This is a confirmed error (second detection) where both the cooling and heating solenoid valves in the MCU are open simultaneously. This is a critical fault indicating a severe refrigerant flow conflict.

The communication and power cables for an indoor unit have been incorrectly wired, meaning they are swapped or interconnected. This can cause communication failure and potential electrical damage.

This error indicates a connection problem or general fault with the SPi (Serial Peripheral Interface). SPi is a communication interface often used between internal components on a circuit board.

During a pipe inspection or system check, the EVA IN (evaporator inlet) temperature sensor shows no change, or the indoor unit has an incorrect address. This hinders accurate system diagnostics.

During a pipe inspection or system check, the EVA OUT (evaporator outlet) temperature sensor shows no change, or the indoor unit has an incorrect address. This indicates a problem with temperature sensing or unit identification.

The thermal fuse in the indoor unit has disconnected, acting as a safety measure to prevent damage from overheating. This usually indicates an underlying issue causing excessive heat.

A general communication failure between indoor and outdoor units, often due to incorrect installation numbering, duplicate indoor unit addresses, or a fault in the communication cable.

A system-wide communication failure where all indoor units are unable to communicate with the outdoor unit. This strongly suggests a central issue with the outdoor unit's communication cable or main control.

This error indicates a communication problem between the primary outdoor unit and any secondary (sub) outdoor units in a multi-unit system. This prevents coordinated operation.

This signifies a broad communication failure involving all Printed Circuit Boards (PBAs) within the outdoor unit's control box. It strongly suggests a central problem like a damaged main communication cable or a core PBA fault.

A communication error specifically affecting the HUB Printed Board Assembly (PBA) within the outdoor unit. This can disrupt the overall communication network of the system.

A communication error specifically affecting the FAN Printed Board Assembly (PBA) within the outdoor unit. This indicates an issue with the control or feedback of the fan operation.

A communication error specifically affecting the Inverter 1 Printed Board Assembly (INV1 PBA) within the outdoor unit. This impacts the control and operation of the first inverter compressor.

A communication error specifically affecting the Inverter 2 Printed Board Assembly (INV2 PBA) within the outdoor unit. This impacts the control and operation of the second inverter compressor.

An indoor unit has been incorrectly wired or configured to use two MCU (Micro Controller Unit) ports that are not designed to be used in series. This improper connection can lead to operational errors.

The rotary switch used for setting the address of an indoor unit (likely on the MCU) has been incorrectly set. This has resulted in three or more units sharing the same address, causing a network conflict.

There is a fault with the DC voltage sensor specifically for Fan2 in the outdoor unit. This sensor monitors the voltage supplied to the fan, and an error here can lead to fan malfunction.

A fault has been detected with the heat sink temperature sensor for Fan2 in the outdoor unit. This sensor is crucial for monitoring the temperature of the fan's power components, and an error can indicate overheating.

Overheating has been detected on the Inverter Power Module (IPM) of Inverter PBA2, most likely caused by a poor electrical contact. This is a safety shutdown to prevent damage to the inverter.

The compressor has stopped operating because the system detected excessively high refrigerant pressure. This is a safety shutdown to protect the compressor and system from damage.

The compressor has stopped due to detected low refrigerant pressure, which could indicate a refrigerant leak or another system issue. This is a critical fault impacting system performance.

The compressor has shut down because the discharge temperature of the refrigerant was excessively high, triggering a safety mechanism. This protects the compressor from overheating damage.

This error occurs in a 3-phase outdoor unit when the electrical phases are reversed, one or more phases have failed, or there's an incorrect connection on the 3-phase input. This prevents the unit from starting or operating correctly.

The compressor has stopped operating because the system detected an abnormal compression ratio. This indicates an issue with how the compressor is processing refrigerant, which can lead to system damage.

This error indicates a problem with the EVI (Enhanced Vapor Injection) Electronic Expansion Valve (EEV), specifically leakage, an internal intercooler leak, or an incorrectly inserted EVI EEV connector. These issues affect system efficiency and performance.

The system has detected a refrigerant leak, which can lead to poor performance, increased energy consumption, and potential damage to the unit's compressor. This is a critical environmental and operational issue.

The heating mode operation is being restricted because the ambient air temperature is too high for safe or efficient heating. This is a system protection mechanism.

The cooling mode operation is being restricted because the ambient air temperature is too low for safe or efficient cooling. This is a system protection to prevent freezing of the evaporator coil.

The system has restricted refrigerant charging while in heating mode because the ambient air temperature is above 15 °C. This is a safety and efficiency measure during the charging process.

The system's operation is prohibited because a significant pressure drop has been detected. This is a safety measure to prevent damage to components like the compressor due to insufficient refrigerant flow or charge.

The CCH (Crankcase Heater) is detected as being detached. The crankcase heater prevents liquid refrigerant from accumulating in the compressor during off-cycles, protecting it from damage.

The outdoor unit's Fan1 is not operating correctly or has completely failed. This fan is vital for dissipating heat from the condenser coil, and its failure can lead to system overheating.

The electrical wiring to the Fan1 motor in the outdoor unit is disconnected. This prevents the fan from receiving power and operating, leading to system inefficiencies or shutdowns.

The outdoor unit's Fan1 is locked or seized, preventing it from rotating. This can be caused by physical obstructions or a motor malfunction.

This error indicates a problem with the ZPC (Zero Point Cross) detection circuit or a general power failure. The ZPC circuit is important for controlling power components, especially in inverter systems.

The motor of Fan1 in the outdoor unit has overheated, likely causing a safety shutdown. This often indicates a problem preventing proper cooling of the motor.

The IPM (Inverter Power Module) for Fan1 in the outdoor unit has overheated. This is a critical safety shutdown to prevent damage to the power electronics controlling the fan.

Inverter compressor 1 in the outdoor unit has failed to operate or is experiencing a significant operational fault. This directly impacts the unit's ability to cool or heat.

The compressor has stopped due to activation of full current control, or a low current reading on Current Transformer 2 (CT2). This indicates an electrical or operational issue with the compressor or its monitoring.

Inverter compressor 1 is drawing excessive electrical current, which has triggered a safety shutdown. This protects the compressor and inverter drive from damage due to overload.

The inverter drive for compressor 1 has detected a 'V-limit' error, indicating that it has reached its voltage limit. This can happen if the system is operating outside its designed parameters or due to an electrical issue.