Error, fault and alarm codes of products - what each code means, its causes and what to do - read from the manufacturers’ manuals, with the manual page each answer comes from.
Outdoor thermistor error detected when outdoor temperature thermistor is open or short-circuited. The manual's first action is: “-Check connection of connector, loose, erroneous connection.”
Heat Exchanger (Pipe) Thermistor Error – When heat exchanger temperature thermistor open or short-circuit is detected at power up or while running the compressor. The manual's first action is: “-Check connection of co…
Compressor thermistor error detected when the compressor temperature sensor is open or short-circuited while powered on or running. The manual's first action is: “-Check for erroneous connection or removed connector.”
Discharge thermistor error detected when the thermistor is open or short-circuited during power-up or compressor operation. The manual's first action is: “-Check connection of connector, loose, erroneous connection.”
IPM error / Trip terminal I error indicates abnormal current at the IPM due to blocked heat radiation. The manual's first action is: “-Check connections of outdoor unit electrical components.”
Active filter / PFC Circuit error code 64 indicates abnormal DC voltage levels or repeated power interruptions. The manual's first action is: “-Check external cause at the indoor or outdoor (voltage drop or noise).”
Inverter error indicates a problem with the inverter's transistor PCB. The manual's first action is: “Check connection of molex plugs on inverter PCB for loose connections.”
Outdoor unit main PCB error The manual's first action is: “Check external cause; voltage drop, poor ground connection.”
The system has detected a problem with the drain pump. The manual's first action is: “Check connector of (CN9) / wire.”
Indoor unit fan motor error code 51 indicates the fan's actual frequency is below one-third of its target for more than 56 seconds. The manual's first action is: “Check rotation of fan.”
Human sensor error code 44 indicates a fault in the human sensor or its connection. The manual's first action is: “Check erroneous connection.”
Indoor heat exchanger thermistor error detected. The manual's first action is: “Check thermistor resistance value.”
Serial communication error between indoor and outdoor units The manual's first action is: “-Check for correct voltages at panel, condenser and evaporator. Refer to the Service Instruction manual”
All 76 error codes of the Fujitsu General 410A Fujitsu General 410A with their meaning, causes and what to do, taken from the manufacturer's manual with page references.
An error other than the above has occurred. The manual's first action is: “This error may occur if you use a non-Canon lens and the camera or lens does not operate properly.”