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.
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…
The total capacity of the indoor units has been exceeded or is under the minimum acceptable range. The manual's first action is: “- Check total capacity of the connected indoor units. - Check all field wiring to ensur…
The system detected an incorrect number of wires or pipes. The manual's first action is: “- Check indoor unit connection. - Check for crossed wiring or piping. (Ref. Service Tip #021 Incorrect Wiring)”
Check run unfinished when remote command is input without confirming completion. The manual's first action is: “Check indoor unit number connection. - Power down all indoor units with remote controller, reset dis conn…
Outdoor unit fan motor 2 error when fan rotation speed is below 100 RPMs in 20 seconds after starting. The manual's first action is: “After motor restarts, if same operation within 60 seconds is repeated 3 times in a …
Outdoor unit fan motor error occurs when motor rotation speed is below 100 RPMs in 20 seconds after starting. The manual's first action is: “After fan motor restarts, if the same operation within 60 seconds is repeate…
Compressor Motor Control Error if rotor location is out of phase more than 90 degrees The manual's first action is: “After the compressor restarts, if the same operation is repeated within 40 seconds, the compressor s…
The inverter compressor has stopped due to overcurrent generation after 10 consecutive attempts. The manual's first action is: “The number of generations is reset if the start-up of the compressor succeeds.”
Intake grille error when the micro switch is detected open while running the compressor. The manual's first action is: “-Check limit switch.”
Indoor heat exchanger thermistor error detected by the controller. The manual's first action is: “-Check thermistor resistance value”