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List of Fujitsu Aircon Error Codes

Fujitsu Troubleshooting

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Fujitsu error codes normally appear on the air conditioner’s display to let you know when something has gone awry. But before you can even pinpoint the exact cause of the issue, you will need to know the error code definition and what it means for your unit.

In this guide, we’ll show you the complete Fujitsu aircon error codes and how to use them to fix any issue affecting your AC unit.

Also read: Common Aircon Problems and How to Troubleshoot Them

Fujitsu Indoor Unit AC Error Codes

Code Possible Cause
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
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

This table covers the current Fujitsu aircon inverter product range. Included are the ARY60U, ARY54U Single and AOY19/24F/U Multi System models.

Troubleshooting Fujitsu Indoor Units

Here are a couple of troubleshooting tips to diagnose and repair issues affecting Fujitsu wired remote control AC models:

  1. When the E:EE Is Displayed - If you see the E:EE displayed, simply switch the unit off and press the temperature up and temperature down buttons simultaneously for 3 seconds.
  2. Return to Normal Operation - If you want to return to normal operations, simply press the temperature up and temperature down buttons together for 3 seconds.
  3. Initiate Test Operation - To initiate test operation, simply switch the unit off and press and hold the master and fan buttons simultaneously for 3 seconds. Afterwards, press the start/stop button to initiate.
  4. Change the Sensor Position - Turn the unit off and change the position by pressing the THERMOSENSOR button for 5 seconds. Once unlocked, toggle the button further until the controller panel is displayed. Then set it to your desired setting and press the button again for 5 seconds to lock it again.
  5. Set on RC DIP SWs - For single handset units, turn DIP SW1 on and turn 2 off. For dual handset master units, turn both on while turning both slaves off.
  6. Turn Group Control Up to 16 Unit from 1 RC Handset - Set the DIP SW3 switch on and RC on. Set each ID unit rotary SW to Unit Address (0-15) in series
  7. Enable Auto Restart on Power Failure - To enable auto restart on power failure, turn DIP SW2-3 on ID unit. Off is auto restart and on is manual restart
  8. Auto Changeover - Turn DIP SW5 on RC. Set on on auto changeover while off is manual
  9. Memory Retention on Power Failure - Dip SW6 on RC. On is memory/off is no memory

Also read: List of Panasonic Aircon Error Codes

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