Panasonic Aquarea Heat Pumps

An audible signal indicates that the system may be overfilled. This can affect performance.

This indicates a communication error between components. The system may not operate correctly.

When an abnormality occurs, the system stops operation, the OFF/ON control panel LED blinks, and an error code is displayed on the control panel's timer display LCD.

The pressure switch has activated 4 times within 20 minutes. This indicates a recurring pressure issue within the system.

The outdoor compressor's revolution speed is abnormal. This has occurred 4 times within 20 minutes, indicating a serious issue.

The outdoor fan motor is locked or not rotating correctly. This has occurred 2 times within 30 minutes.

The total running current has exceeded limits, triggering protection. This has occurred 3 times within 20 minutes. The OFF/ON LED will blink.

The compressor tank temperature has exceeded 112°C, causing overheating protection to activate. This has occurred 4 times within 30 minutes. The OFF/ON LED will blink.

The IPM (Intelligent Power Module) has overheated. This has occurred 3 times within 30 minutes. The OFF/ON LED will blink.

The DC current to the IPM has exceeded set limits continuously 7 times. The OFF/ON LED will blink.

An abnormality has been detected in the refrigeration cycle. This has occurred 2 times within 20 minutes.

There is an abnormality in the system's cooling or heating cycle changeover. This has occurred 4 times within 30 minutes.

The pressure switch has detected an abnormality and will continue for 1 minute. This indicates a problem with system pressure regulation.

The system is not achieving sufficient superheat on the discharge line, which can indicate a problem with refrigerant flow or heat absorption.

The second sensor measuring the water outlet temperature is faulty.

An internal thermostat within the unit is malfunctioning.

The sensor measuring the outdoor air temperature is faulty or disconnected. The system will stop operation after 5 seconds.

The sensor measuring the water inlet temperature indoors is faulty or disconnected. The system will stop operation after 5 seconds.

The sensor measuring the outdoor discharge pipe temperature is faulty or disconnected. The system will stop operation after 5 seconds.

The Power Factor Correction (PFC) control has encountered an issue 4 times within 10 minutes. This suggests a problem with the unit's power regulation.

The sensor for the outdoor heat exchanger temperature is faulty or disconnected. The system will stop operation after 5 seconds.

The sensor responsible for detecting frost on the outdoor unit is faulty or disconnected. The system will stop operation after 5 seconds.

The sensor measuring the water outlet temperature indoors is faulty or disconnected. The system will stop operation after 5 seconds.

The Current Transformer (CT) in the outdoor unit has an open circuit. This can be related to refrigerant issues or PCB faults.

The sensor measuring the temperature at the outdoor Expansion Valve (EVA) outlet is faulty or disconnected. The system will stop operation after 5 seconds.

The sensor measuring the temperature at the outdoor bypass outlet is faulty or disconnected. The system will stop operation after 5 seconds.

The cooling system's high pressure has exceeded a safe limit, triggering overload protection. The system may stop operation.

The system has detected that the indoor and outdoor units are not correctly matched for capacity. This can lead to inefficient operation or system failure.

The sensor measuring the outdoor compressor's temperature is reporting an error. The system will stop operation after 5 seconds of this condition.

There is an issue with the system's pump. This could affect water circulation.

The sensor measuring the refrigerant liquid temperature indoors is faulty or disconnected. The system will stop operation after 5 seconds.

An error related to the service valves within the system has been detected. These are used for maintenance.

A sensor measuring solar input is not functioning correctly. This affects systems that integrate solar power.

This error pertains to a sensor responsible for monitoring pool water temperature or conditions.

A sensor monitoring the buffer tank is reporting an issue. This can impact heating performance.

This error occurs when components from different manufacturers are detected in the system, or incompatible brands are used.

The system has detected an abnormality in the compressor's low pressure. This could indicate a problem with refrigerant levels or system components.

A temperature sensor for Zone 1 is not functioning correctly, affecting temperature control in that area.

A temperature sensor for Zone 2 is reporting an error, impacting temperature management for that zone.

After 9 minutes of operation, the system detected low water flow continuously for 10 seconds. The water pump and compressor will turn off permanently. The OFF/ON control panel LED will blink.

The sensor that measures low pressure in the refrigerant system is faulty or providing incorrect readings.

The outdoor high pressure sensor has detected an issue. The system will stop operation after 5 seconds of this condition.

There is an issue with the water circulation during the defrost cycle.

The first external temperature sensor (thermistor) is not working correctly.

The second external temperature sensor (thermistor) is reporting an error.

The Overload Protector (OLP) for the back-up heater has activated or is disconnected. The system will stop operation after 60 seconds.

The sensor monitoring the tank temperature has an abnormality. The system will stop operation after 5 seconds.

There is a communication failure between different Printed Circuit Boards (PCBs) within the system.

The system has activated a protection mode because the incoming water temperature is too low.

There is a communication issue between the indoor unit and its control panel. The system may stop operation.

The indoor unit is not receiving normal data from the outdoor unit. This can happen during cooling or heating operations.

The Overload Protector (OLP) for the tank heater has activated or is disconnected. The system will stop operation after 60 seconds.

There is an incorrect connection between the indoor and outdoor units, possibly related to supply voltage. The system may stop operation.

The outdoor unit's high pressure has exceeded a safe limit, triggering overload protection. The system may stop operation.

The system has detected a risk of the indoor heat exchanger freezing. The system may stop operation to prevent damage.

The flow switch is detecting normal water flow through the system.

The flow switch has detected that there is no water flowing through the system. This indicates a low water level or a blockage.

The system may pause for a few minutes after restarting. This is a built-in safety feature to protect the compressor.

The Operation LED is blinking, indicating that an abnormal operation has occurred within the system.

The system may start operating automatically outside of normal timer settings if a 'Sterilisation timer' function has been activated.

The outdoor unit may stop operating if the ambient temperature is outside the system's designed operating range, or if a protective control has been activated.

It is normal for the outdoor unit to release water or steam. This occurs due to condensation during cooling or as part of the defrost cycle during heating.

The indicator light is solid amber, meaning the unit is in standby mode and ready to start charging.

This mode is used to extract all refrigerant from the piping into the outdoor unit, typically for relocation or disposal. The 3-way valve will shift to the room side.

This mode allows the water pump to operate independently of other system functions, useful for circulation checks.

The system requires time to heat water from cold. The backup heater may automatically engage to assist.

The system may take longer to heat up if the outdoor temperature is very low, if air vents are blocked, or if heating zones are demanding high output.

The system may switch off if the water inlet temperature drops below 10°C, engaging the backup heater, or due to other protection controls.

You may hear a water-like flowing sound from the unit. This is normal and caused by refrigerant circulating within the system.