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.
Active filter module (AFM) error (Second time) The manual's first action is: “2 flashes”
Current transformer error when current drops to zero amps within one minute of compressor start. The manual's first action is: “-Check if CT wire is open. (Ref. Service Manual for schematic on each model) -Controller …
Abnormal current value at the IPM is detected. The manual's first action is: “-Check if outdoor fan is defective (does not rotate). -JPM/Controller PCB defective.”
Pressure switch error indicates a high pressure switch issue. The manual's first action is: “8 flashes”
Compressor temperature sensor error The manual's first action is: “8 flashes”
The system has detected excessive outdoor pressure, causing a permanent stop. The manual's first action is: “7 flashes”
Outdoor unit doesn't accept the signal from the indoor unit The manual's first action is: “-Reset power. If error persists check wiring from panel to condenser, condenser to evaporator. Check for correct voltage at pa…
Discharge pipe temperature sensor error detected. The manual's first action is: “-Check thermistor for open or short. (Ref. Thermistor Resistance Chart) -Controller PCB defective.”
Outdoor temperature sensor error The manual lists no action for this code.
Float switch operated The manual's first action is: “2 flashes”
Room temperature thermistor detected an abnormal temperature. The manual's first action is: “- Check thermistor for open or short. Check thermistor resistance value. (Refer to "Thermistor characteristics table"). - Co…
Manual auto switch error occurs when the switch remains on for 60 seconds or more. The manual's first action is: “- Check if Manual Auto Switch is kept pressed. (Ref. Service Tip #015-Auto Switch Button)”
EEPROM access abnormal in the indoor unit model The manual's first action is: “- Check if the ground connection is proper. - Check if there is any equipment that causes harmonic wave near the power cables, i.e., neon …
The system detected an incorrect number of indoor units or mismatched branch boxes. The manual's first action is: “- Check indoor unit number connection for overcapacity. - Check power to the branch boxes. (Ref. Servi…
23 on the Fujitsu General 410A is listed in the manual as: Connected combination error. The manual's first action is: “When the wiring is incorrect. - When power is on and one of the below occurs: (Ref. Service Tip #0…