Rheem Air Handlers

The DC voltage in the inverter system is too high. This can be caused by issues with the power supply or the control board.

The DC voltage in the inverter system is too low. This is often related to the power supply.

The AC current in the inverter system has exceeded the safe limit. This can indicate a system overload or a control board issue.

The system has detected that the compressor is out of sync. This can be due to issues with the compressor itself or the control board.

The unit has detected a loss of phase in the compressor, leading to speed pulsations. This could be a compressor issue or a control board fault.

A phase loss has been detected, resulting in an imbalance in current. This points to potential compressor or control board problems.

An issue with the Intelligent Power Module (IPM) on the inverter has been detected. This could be due to system overload, control board issues, or compressor problems.

This fault indicates a problem with the Intelligent Power Module (IPM) on the inverter system.

A fault related to the Power Factor Correction (PFC) circuit has been detected at the edge level.

This error code indicates a fault within the Power Factor Correction (PFC) circuit.

The Power Factor Correction (PFC) circuit is failing to detect power correctly. This can be due to unstable power, power interruptions, or a faulty control board.

The Power Factor Correction (PFC) circuit is detecting an overload current. This suggests a system overload, a faulty control board, or a problem with the PFC itself.

The DC voltage within the system is abnormal. This can be caused by input voltage issues or a faulty control board.

The Power Factor Correction (PFC) circuit is detecting a low voltage condition.

The unit is in overload protection during cooling mode. This can be caused by too much refrigerant, high outdoor temperatures, blocked airflow, a dirty condenser, or a faulty fan or expansion valve.

The discharge temperature sensor is not working correctly. This could be due to loose wiring, a faulty sensor, or an issue with the main PCB's sampling circuit.

The AC voltage supplied to the unit is outside the acceptable range (either too high or too low), or the voltage sampling circuit on the driver board is abnormal.

The system failed to initialize the Pulse Width Modulation (PWM) logic for the Power Factor Correction (PFC) circuit.

An abnormal temperature reading has been detected within the system. This could be due to various factors affecting temperature sensors or the control board.

There is an issue with the balance adjustment of the shunt resistance, possibly indicating a control board problem.

The defrosting sensor has a fault, likely related to its wiring connection, the sensor itself, or the main PCB's sampling circuit.

The motor parameters failed to set correctly during initialization. This indicates an abnormal startup condition.

A sudden, unexpected change in the DC voltage has been detected. This could be caused by power supply fluctuations or a faulty control board.

There is an error in controlling the D-axis current for the compressor drive. This could be due to system overload or a control board fault.

An error in controlling the Q-axis current for the compressor drive has been detected. This may indicate system overload or a control board issue.

This code indicates an issue with the current control integral for the D axis. It could mean the system is suddenly overloaded, or the compressor parameters are not set correctly. The control board might also be failing.

This indicates a problem with the current control integral for the Q axis. Similar to code 29, it could be due to a sudden system overload, incorrect compressor parameters, or a failing control board.

This error means the EEPROM data on the control board is abnormal. This could be an issue with the EEPROM itself or the control circuit connected to it.

The humidity sensor is not functioning correctly. This could be due to a loose connection, a faulty sensor, or an issue with the indoor control board.

The high-pressure sensor is malfunctioning. This could be due to a loose connection, a faulty sensor, or an issue with the sampling circuit on the main PCB.

The Intelligent Power Module (IPM) has faulted. Refer to specific tables (503 and 504) for detailed analysis based on driver board LED indicators.

There is a communication error between the Intelligent Power Module (IPM) and the control board. Refer to tables 503 and 504 for detailed analysis.

The discharge temperature has exceeded the safe limit. This can be caused by low refrigerant, a malfunctioning electronic expansion valve (EEV), or high outdoor ambient temperatures.

The outdoor DC fan motor (specifically the upper one) has a fault. This could be due to loose connections, damaged wiring, a faulty motor, a faulty drive circuit, or a blocked fan.

This code signals an abnormal DC voltage detection, often related to the fan motor system. It could be that the fan motor system is overloaded, the control board is faulty, or the fan motor has insulation issues.

This fault indicates that the system has detected an out-of-step condition. This could be due to loose wiring, a faulty control board, fan motor starting issues, demagnetization, or poor fan motor insulation.

This code indicates an issue with the fan motor's speed control. It might be caused by defective control board components, fan motor shaft clamping, or fan motor insulation failure.

This fault means the system has detected an out-of-phase condition for the fan motor. This can be due to phase loss or defective control board components.

This error relates to hardware over-current detection in the IPM-FO component. It may be caused by fan motor overload, control board failure, or fan motor insulation issues.

Similar to code 54, this indicates a hardware over-current condition in the IPM-FO component. Causes include fan motor overload, control board failure, or fan motor insulation problems.

This fault indicates an abnormal detection in the fan motor's AD Offset. The issue is likely with the control board's circuit.

There is a communication error with the refrigerant sensor, or the sensor itself has failed.

Communication has been lost between the indoor and outdoor units. This could be due to wiring issues, faulty communication cables, or problems with the control boards.

The indoor fan motor is experiencing a fault. This could be due to loose wiring, a faulty motor, a damaged cable, or an issue with the control board.

There is an error with the data stored in the indoor unit's EEPROM (Electrically Erasable Programmable Read-Only Memory). This can be caused by a faulty EEPROM, its control circuit, or incorrect installation.

The temperature sensor measuring the indoor ambient temperature is faulty. This could be due to connection issues, a defective sensor, or a problem with the controller board.

The temperature sensor for the evaporator coil is reporting an error. This could be due to a loose cable, a faulty sensor, or a problem with the indoor control board.

The unit has shut down because the Intelligent Power Module (IPM) board has overheated. This can be caused by high outdoor temperatures, low fan speed, improper installation, or low supply power.

The system indicates that the refrigerant level is low.

The 'FC' indicator lights up to signal that the air filter is clogged with dust and requires cleaning.

There is a communication error between the main control board and the wired controller. This can be caused by loose connections, incorrect wiring, or a faulty controller or board.