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Fujitsu AC & Air conditioner Error Codes

 


Indoor Unit AC Error Codes

CodePossible Cause
OOID to RC Comms Fail
O1ID to OD Comms Fail
O2ID Air Sensor Open
O3ID Air Sensor Close
O4ID Pipe Sensor Open
O5ID Pipe Sensor Close
O6OD Pipe Sensor Fail
O8Power Source Connection Failure
O9Drain Problem Float switch operated
OAOD Air Sensor Fail
OCDischarge sensor Fail
OEOutdoor High Pressure Heatsink error
11OD PCB Fail
12ID Fan Fail
13OD Signal Abnormal ID signal error
14OD EEPROM Fail
15Compressor Temp Failure
16Pressure Switch Error
17IPM Error
18CT Error
19Active Filter Module Error
1ACompressor Failure
1BOD Fan Failure
1CInverter to PCB Comms Fail
1D2 Way Valve sensor Fail
1EExpansion Valve Error
1FConnection ID Unit Error
20Indoor manual switch abnormal
24Excessive high pressure protection on cooling
25PFC circuit error
26Indoor signal error
27Indoor signal error
28Indoor heat exchanger temperature error
29Outdoor heat exchanger temperature (middle) error
2APower supply frequency detection error
2BCompressor temperature error
2CFour-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

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