Fujitsu Limited is a multinational Japanese information and communications technology company that was established in 1935. With headquarters in Tokyo, the company has made an impact on the Asia, and international markets. Currently the largest company by annual revenue in Japan, the company focuses on producing a wide range of home and commercial appliances. Ranging from air conditioning to date storage they have you covered.
Additionally, the company has a wide range of groups and its appliance company runs under the name Fujitsu General. The company manufactures air conditioners, and humidity control solutions, and has taken the world by storm. Opening offices in different areas of the world, they are now one of the largest air conditioner manufacturers and suppliers.
While Fujitsu is a leading corporation, but there are times when consumers face a troubling error code that they are unable to decipher. For such days, we are here to help you with a simple solution. Start by noting down the error code, and match it using the list below. Once you have the error code you can easily work your way to the fix. To help you out we have listed down some of the most common error codes for Fujitsu ACs.
Fujitsu Halcyon Mini Split Codes
Fujitsu AC Wired Remote Controller, When EE:EE is displayed on remote control , press “Energy Save” & “Zone Control” buttons simultaneously for longer than 3 secs. The error code will then be displayed on the LCD.
| Error Codes | Meaning |
|---|---|
| E0:00 | Coms error - indoor to remote |
| E1:00 | Coms error - indoor to outdoor |
| E2:00 | Return air thermistor open circuit |
| E3:00 | Return air thermistor short circuit |
| E4:00 | Indoor coil thermistor open |
| E5:00 | Indoor coil thermistor shorted |
| E6:00 | Outdoor coil thermistor open |
| E7:00 | Outdoor coil thermistor shorted |
| EA:00 | Outdoor ambient thermistor open |
| Eb:00 | Outdoor ambient thermistor shorted |
| Ec:00 | Discharge pipe themistor open |
| Ed:00 | Discharge pipe thermistor shorted |
| EE:00 | High Pressure problem |
| EF:00 | Discharge pipe temp. Problem - too high = short of gas |
| OO | ID to RC Comms Fail |
| O1 | ID to OD Comms Fail |
| O2 | ID Air Sensor Open |
| O3 | ID Air Sensor Close |
| O4 | ID Pipe Sensor Open |
| O5 | ID Pipe Sensor Close |
| O6 | OD Pipe Sensor Fail |
| O8 | Power Source Connection Failure |
| O9 | Drain Problem Float switch operated |
| OA | OD Air Sensor Fail |
| OC | Discharge sensor Fail |
| OE | Outdoor High Pressure Heatsink error |
| 11 | OD PCB Fail |
| 12 | ID Fan Fail |
| 13 | OD Signal Abnormal ID signal error |
| 14 | OD EEPROM Fail |
| 15 | Compressor Temp Failure |
| 16 | Pressure Switch Error |
| 17 | IPM Error |
| 18 | CT Error |
| 19 | Active Filter Module Error |
| 1A | Compressor Failure |
| 1B | OD Fan Failure |
| 1C | Inverter to PCB Comms Fail |
| 1D | 2 Way Valve sensor Fail |
| 1E | Expansion Valve Error |
| 1F | Connection ID Unit Error |
| 20 | Indoor manual switch abnormal |
| 24 | Excessive high pressure protection on cooling |
| 25 | PFC circuit error |
| 26 | Indoor signal error |
| 27 | Indoor signal error |
| 28 | Indoor heat exchanger temperature error |
| 29 | Outdoor heat exchanger temperature (middle) error |
| 2A | Power supply frequency detection error |
| 2B | Compressor temperature error |
| 2C | Four-way valve abnormal |
Press “Energy Save” & “Zone Control” buttons simultaneously for longer than 3 secs to return to normal operating mode.
Operation Flashing Lights
If you use a wired type remote controller, error codes will appear on the remote controller display. If you use a wireless remote controller, the lamp on the photo detector unit will output error codes by way of blinking patterns. See the lamp blinking patterns and error codes in the table below. An error display is displayed only during operation.
| Red and Green Light | Current Models |
|---|---|
| Off-2 Flashes | Reverse Comms Fail at Startup |
| Off-3 Flashes | Reverse Comms Fail In Use |
| Off-4 Flashes | Forward Comms Fail at Startup |
| Off-5 Flashes | Forward Comms Fail In Use |
| Off-8 Flashes | Wired Remote Control Failure |
| 2 Flashes-2 Flashes | Indoor Air Sensor Fail |
| 2 Flashes-3 Flashes | Indoor Pipe Sensor Fail |
| 2 Flashes-4 Flashes | Indoor heat exchanger sensor error |
| 2 Flashes-6 Flashes | Float switch operated |
| 3 Flashes-2 Flashes | OD Disch Sensor Fail |
| 3 Flashes-3 Flashes | OD Pipe Sensor Fail |
| 3 Flashes-4 Flashes | OD Air Sensor Fail |
| 3 Flashes-7 Flashes | Heatsink Sensor Error |
| 3 Flashes-8 Flashes | Compressor Temp Sensor Fail |
| 4 Flashes-2 Flashes | Forced Auto Switch Welded |
| 4 Flashes-3 Flashes | Main Relay Welded |
| 4 Flashes-4 Flashes | Power Failure |
| 4 Flashes- 7 Flashes | VDD Permament Stop Protection |
| 4 Flashes-8 Flashes | Reverse VDD Permament Stop |
| 5 Flashes-2 Flashes | IPM Protection |
| 5 Flashes-3 Flashes | CT Abnormal |
| 5 Flashes-5 Flashes | Compressor Failure |
| 5 Flashes-6 Flashes | Outdoor Fan Failure |
| 6 Flashes-2 Flashes | ID Fan Motor Locked |
| Flashes-3 Flashes | ID Fan Motor Rotation Error |
| 7 Flashes- 2 Flashes | High Discharge Temperature |
| 7 Flashes- 3 Flashes | High Pressure |
| 7 Flashes-4 Flashes | 4-Way valve abnormal |
| 7 Flashes- 5 Flashes | Pressure Switch Fail |
| 7 Flashes-6 Flashes | Compressor Temperature error |
| 8 Flashes- 2 Flashes | Active Filter AFM Fail 1st Time |
| 8 Flashes- 3 Flashes | Active Filter AFM Fail 2nd Time |
| 8 Flashes-4 Flashes | PFC Circuit Error |
| Blinking-Blinking | PCB Failure |
Remote Controls Buttons Meaning
Manuals
Air Conditioner Installation Manual
AUXB04GALH Airstage VRF Service Manual
Halcyon Mini Splits Error Codes and Troubleshooting Guide
Inverter Duct Type Air Conditioner Manual
References
fujitsugeneral.com/us/support/faq/halcyon/troubleshooting.html
fujitsugeneral.com/us/resources/pdf/support/downloads/pdf-om-asug09-15lzas-01.pdf
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*If you can't find the code you're looking for on our site, please let us know, and we'll update our database as soon as possible.
I have a Fujitsu Halycon a/c direct vent unit. The orange operation light and the green time light are blinking in tandem 5 times. What does that mean?
My 10.5-year old Fujitsu ASU12RLS/AOU12RLS system has worked flawlessly until recently. It isn’t throwing any visible codes, but now seems to only heat, not cool. I’ve tried cycling between heat/cool modes, turning off the system at the circuit breaker overnight then restarting – no success. Any ideas? Many thanks in advance!
Hello
I have a fujitsu mini split with a ceiling cassette mount unit, along with the out door compressor. 1.5 ton unit. the cassette grill blinks 10 green , one orange ,last one blinks continuous. The wall control say A1 Err.
Thanks Ken
Refrigerant system Discharge temperature 1 error. Discharge temperature 1 error.
Continuous blink 10 flashes IPM error. Abnormal current value at the IPM is detected. Heat radiation is blocked (inlet/outlet). -Check if outdoor fan is defective (does not rotate). -IPM/Controller PCB defective.Check Refrigeration cycle for under/over charge conditions.
Brother just had a unit installed and one day it had this same blink pattern of top light blinking 10 times, then middle light once, and bottom light continuous. Turned off the 220 breaker for the AC for about 30 seconds. Then the AC came up normally and has been running OK. Turning it off by control did nothing, and waiting a full day had done nothing. Only a total disconnect resolved it.
Don’t know what caused it, our why a power on remote did nothing to reset it??
Operation light: 10 blinks, followed by red timer light blinking three times, and economy light blinking continuously. Cannot find this error/fault code anywhere online. Thanks, Jim
A3 Error: Refrigerant system. Compressor temperature error. Compressor 1 temperature error.
admin
Refrigerant system. Compressor temperature error. Compressor 1 temperature error. A3 error
When you get this error, what action needs to be taken? Thanks.
Hello James I have just read your comments regarding your air conditioner and it seems that mine has the same fault 10 Green Flashes on the operation and 3 red flashes on the Timer with the economy flashing constantly, what was the outcome on your airconditioner
Hello
I saw the error code (EC) on General air conditioner.
How to solve this error?