Fujitsu mini split systems are designed with integrated error codes that assist users in diagnosing and fixing issues efficiently. These error codes can be easily viewed on the LCD display of the indoor unit or remote controller, providing immediate information for troubleshooting.
Among the most common error codes are E0, E1, H11, and U4. The E0 code signifies a communication fault between the indoor and outdoor units, while the E1 code indicates a malfunction in the compressor or temperature sensor. The H11 code suggests elevated pressure levels, which typically requires the expertise of a professional technician to resolve. Similarly, the U4 error points to wiring issues linking the indoor and outdoor components, necessitating prompt attention from a licensed HVAC professional. By understanding these error codes, Fujitsu mini split users can take appropriate actions to maintain their systems effectively.
| Error Code | Description | Possible Solutions |
|---|---|---|
| RLS: 2 flashes, GLS: 2 flashes | Indoor Air Sensor Fail | The indoor air sensor has encountered an issue. To address this, assess whether it’s in timer or test mode, and inspect the air filters for potential blockages. |
| RLS: 2 flashes, GLS: 3 flashes | Indoor Pipe Sensor Fail | In case of this error, check for obstructions within the pipes and ensure that the pipework temperature falls within the specified range for cooling and heating modes. |
| RLS: 3 flashes, GLS: 4 flashes | Outdoor Air Sensor Fail | When this error occurs, it’s crucial to confirm that the suction temperature is within the specified range. |
| E:0 | Indoor Unit – Remote Control Communications Fault | If you encounter this issue, carefully examine the wiring of the remote control. Look for any potential sources of interference that might disrupt communication between the unit and the remote control. |
| E:01 | Indoor Unit (I/U) – Outdoor Unit (O/U) Communications Fault | To resolve this communication problem, investigate the interconnecting wiring for any sources of interference that could affect system performance and communication. |
| E:02 | Room Sensor Open | If you receive this error, it means a sensor is missing and requires replacement. |
| E:03 | Room Sensor Short | This error indicates a short circuit in the sensor. To rectify the situation, the sensor needs to be either repaired or replaced. |
| E:05 | I/U Pipe Sensor Open | When this error is displayed, it signifies that the pipe sensor is missing and should be replaced. |
| E:06 | O/U Pipe Sensor Open | The absence of the outdoor unit’s sensor triggers this error. To restore proper functionality, the missing sensor needs replacement. |
| E:07 | O/U Pipe Sensor Short | In the case of a sensor short-circuit, it’s necessary to replace the faulty sensor. |
| E:08 | Power Source Error | Investigate the power supply for potential issues. This could include checking for loose plugs or any damage to the wiring. |
| E:09 | Float Switch | This error suggests that the water level is too high. To address this, inspect the drainage system for blockages that could reduce the water level. |
| E:0A | O/U Air Sensor Open | If the sensor is missing, it needs to be installed to resolve this issue. |
| E:0C | Discharge Sensor Open | To rectify this situation, replace the missing discharge sensor. |
| E:0D | Discharge Sensor Short | Locate the sensor with the fault and replace it to address the short-circuit issue. |
| E:0F | High Discharge Temperature | A high discharge temperature can result from contamination in the pipework or a gas shortage. In such cases, professional assistance should be sought. |
| E:11 | Model Abnormal | Verify the compatibility of the Printed Circuit Board (PCB) to address this issue. |
| E:12 | Indoor Fan Failure | If this error is displayed, carefully inspect the fan and its motor for faults, and perform necessary repairs or replacements. |
| E:13 | O/D Signal Abnormal | Abnormal signals may occur due to communication issues. Investigate and address the cause of this fault. |
| E:14 | Outdoor PCB Failure | When the Outdoor PCB fails, it may require repair or replacement to restore normal operation. |
How Do I Find My Fujitsu Error Code?
If you are looking for a Fujitsu error code, the best place to start is by visiting Fujitsu’s website and navigating to their Support page.
There, you can find an extensive library of support information that includes specific error codes and their accompanying solutions.
Additionally, most products will come with a manual or other documentation that should include any applicable error codes as well as troubleshooting steps.
If neither of these resources provides the answer you need, then contact customer service directly for further assistance.
Try resetting the AC system to remove the code.
Fujitsu (O General) Ac wired remote & wireless remote error codes
Author: Ralph P. Sita
Ralph P. Sita is a seasoned professional with deep roots in both the HVAC and tech industries. His family’s business, Ralph P. Sita, Inc., is a locally owned and operated HVAC contractor with over 42 years of experience, serving the DC, Maryland, and Virginia areas. The company specializes in residential, commercial, and industrial heating, ventilation, and air conditioning services, offering everything from installation and maintenance to custom ductwork and indoor air quality solutions -www.ralphpsita.com. A former CPA, he spent the last decade as co-founder and co-CEO at Cybrary, a leading platform for cybersecurity and IT training. Cybrary became the largest, most well-known cybersecurity training businesses in the industry under his leadership. Smart AC Solutions is an opportunity to give back to the HVAC community by providing reliable, actionable information on all things heating and cooling.