CPAP Error Codes

Amit Verma
Dec 4, 2024
11 min read

Updated: 2 days ago

Image Showing CPAP Error Codes Which Comes in CPAP Machine

Continuous Positive Airway Pressure (CPAP) machines are essential for individuals with sleep apnea, providing consistent airflow to maintain open airways during sleep. However, like any technology, CPAP machines can occasionally encounter errors. Understanding CPAP error codes can save time, ensure proper functionality, and prevent unnecessary disruptions in therapy.

In this blog, we’ll explore common CPAP error codes, their meanings, and how to troubleshoot them effectively.

Index:

Common CPAP Error Codes
Solving Specific CPAP Error Codes
Resmed CPAP Error Codes
Luna 2 CPAP Error Codes
BMC CPAP Error Codes

What Are CPAP Error Codes?

Error codes are diagnostic alerts displayed on a ResMed CPAP machine to indicate issues with the device. These can range from minor problems, like an improperly connected hose, to more complex hardware malfunctions. Recognizing these codes can help users take the right actions to resolve the issue or contact a professional for assistance.

Common CPAP Error Codes and Their Meanings

1. E01 – Power Supply Issues

Meaning: This code often indicates a problem with the device's power source.
Solution:
- Ensure the machine is plugged into a functional outlet.
- Check for loose or damaged power cords.
- Replace the power adapter if necessary.

2. E02 – Circuit Disconnection

Meaning: The air circuit (hose or mask) is not connected properly.
Solution:
- Reattach the hose securely to the machine and mask.
- Inspect for leaks or blockages in the hose.
- Ensure the mask fits snugly without leaks.

3. E03 – Airflow Blockage

Meaning: The device detects restricted airflow, often caused by blockages.
Solution:
- Check the filter and replace it if dirty or clogged.
- Ensure the hose and mask are free from obstructions.
- Inspect for any kinks in the tubing.

4. E04 – Humidifier Malfunction

Meaning: The integrated or external humidifier is not functioning properly.
Solution:
- Ensure the water chamber is filled to the appropriate level.
- Check for cracks or damage in the humidifier chamber.
- Reset the humidifier and ensure it’s correctly attached to the machine.

5. E05 – Pressure Calibration Failure

Meaning: The device is unable to reach or maintain the set pressure levels.
Solution:
- Re-calibrate the machine using the user manual's instructions.
- Ensure there are no leaks in the circuit.
- Contact the manufacturer or service center if the issue persists.

6. E06 – Hardware Fault

Meaning: A hardware issue, such as a malfunctioning internal component.
Solution:
- Restart the device.
- If the error persists, contact an authorized service center.

7. E07 – Software Update Required

Meaning: The device needs a firmware update.
Solution:
- Connect the machine to Wi-Fi or use a USB to update the software.
- Follow the manufacturer’s update guidelines.

How to Solve CPAP Machine Errors: A Step-by-Step Guide

CPAP machines can occasionally display error codes that indicate various issues. Solving these errors involves identifying the problem and applying the correct troubleshooting steps. Here's a comprehensive guide to resolving common CPAP errors effectively:

General Steps to Solve CPAP Errors

1. Restart the Device

Turn off the CPAP machine and unplug it.
Wait for 5 minutes and then plug it back in.
Restarting often clears minor glitches or software hiccups.

2. Check for Leaks

Inspect the tubing and mask for any leaks or loose connections.
Reattach the hose and ensure a snug fit with the mask and machine.
Replace worn-out or damaged parts.

3. Inspect Filters

Remove the air filter and check if it’s clogged or dirty.
Clean or replace the filter as per the manufacturer’s instructions.
Use only compatible filters recommended by the machine’s manufacturer.

4. Ensure Proper Circuit Setup

Verify that the tubing, mask, and humidifier are connected correctly.
Follow the device’s user manual for proper circuit assembly.
Make sure there are no kinks or blockages in the hose.

5. Adjust Humidifier Settings

If the humidifier is causing issues, ensure it’s properly attached and filled to the recommended level.
Inspect for cracks or leaks in the water chamber and replace if damaged.

6. Update Firmware

Connect the CPAP machine to Wi-Fi or use a USB to check for firmware updates.
Follow the manufacturer's update instructions to resolve software-related errors.

7. Follow On-Screen Instructions

Many CPAP machines display specific instructions along with error codes.
Carefully follow the steps provided by the device to resolve the issue.

8. Refer to the User Manual

Each CPAP model has unique error codes and troubleshooting steps.
Consult the user manual for details on resolving specific codes.

Solving Specific CPAP Error Codes

Error Code E01: Power Supply Issues

Ensure the power cord is securely plugged into a functional outlet.
Replace a damaged power cord or adapter if necessary.

Error Code E02: Circuit Disconnection

Reconnect the tubing and mask securely.
Check for leaks or loose connections.

Error Code E03: Airflow Blockage

Clean or replace the air filter if it’s clogged.
Ensure the tubing and mask are free of obstructions or sharp bends.

Error Code E04: Humidifier Malfunction

Ensure the humidifier is properly attached and filled with water to the correct level.
Inspect and replace a cracked or faulty humidifier chamber.

Error Code E05: Pressure Calibration Failure

Re-calibrate the device following the manual's instructions.
Inspect for circuit leaks or blockages.

Error Code E409: Excessive Circuit Leak

Check the mask and tubing for leaks and ensure secure connections.
Replace damaged components if needed.

Error Code E07: Software Update Needed

Connect the device to Wi-Fi or use a USB to download and install the latest firmware.

Resmed CPAP Error Codes

The ResMed AirSense 10 is a highly reliable CPAP machine, but like any advanced device, it can occasionally display error messages. These codes indicate specific issues—ranging from minor sensor faults to internal hardware failures. Understanding these error codes helps users troubleshoot effectively and avoid unnecessary service delays.

🔍 General Error Codes (001–020) and Their Meanings

Here’s a list of common ResMed error codes along with their potential causes:

Error 001: Hardware fault (blower motor or pressure sensor)
Error 002: Pressure sensor fault
Error 003: Pressure sensor fault
Error 004: Over-temperature of the main PC board
Error 006: Internal communication error
Error 010: Flow sensor stuck low
Error 011: Flow sensor stuck
Error 012: Flow sensor not relaying information
Error 013: Pressure sensor not reading properly
Error 017: Software data issue
Error 018: Calibration data error
Error 019: Non-specific error, likely blower motor or main PC board
Error 020: Faulty flow sensor

These are typically internal system faults that may require diagnostics by a certified service technician. If any of these codes persist after a restart, professional inspection is recommended.

⚠️ Other Common Issues and Messages

High Leak Detected: Usually caused by a loose mask or hose connection. Check for proper assembly and mask fit.
Heating System Fault: Indicates the humidifier’s heating element isn’t functioning. Therapy continues, but without humidification.
Motor Life Exceeded: After approximately 21,900 hours of use, the motor reaches its lifespan. The device may need servicing or replacement.
Power Connector Not Fully Inserted: Check the rear power port and ensure the plug is firmly connected.
System Fault – Refer to User Guide: A generic system error that requires reference to the manual or contacting support.

🛠 Troubleshooting Tips

Restart the Device – Unplug, wait 5 minutes, and restart to clear temporary glitches.
Check All Connections – Inspect mask, tubing, humidifier, and power supply.
Clean Components Regularly – Ensure filters, tubing, and the water chamber are clear and hygienic.
Update Firmware – If available, update the software via Wi-Fi or USB to resolve bugs.
Contact Support – For persistent errors (especially 001–020), reach out to an authorized ResMed service center.

By recognizing these error codes and acting quickly, users can avoid therapy interruptions and ensure the longevity of their ResMed AirSense 10 machine.

🛠️ Luna 2 CPAP Error Codes and Troubleshooting

The Luna 2 CPAP machine by 3B Medical is known for its advanced features and user-friendly interface. However, like any sophisticated device, it may display error codes indicating specific issues that require attention. Understanding these codes can help users troubleshoot effectively and maintain optimal therapy.

Common Error Codes:

Error Code 101 – Power Supply Failure: This error suggests a problem with the device's power source. Ensure that the power cord is securely connected and that the outlet is functioning properly. If the issue persists, consider using a different power outlet or consulting the user manual for further guidance.
Error Code 201 – Air Pressure Sensor Issue: This code indicates a malfunction in the air pressure sensor. Try reinserting the SD card or replacing it with a new one to see if the error clears. If the problem continues, contact customer support for assistance.
Error Code E-23 – Filter Problem: This error points to an issue with the device's filter, possibly due to blockage or improper installation. Refer to the user manual for instructions on inspecting and replacing the filter to resolve the error.
Error Code E-45 – Power Supply Issue: Similar to Error Code 101, this code indicates a problem with the power supply. Verify that all power connections are secure and that the device is receiving adequate power.
Error Code 202 – Pressure Sensor Fault: This error signifies a fault in the pressure sensor. Restart the device to see if the error clears. If not, consult the user manual or contact customer support for further assistance.
Error Code 303 – Motor Malfunction: This code indicates a malfunction in the device's motor. Discontinue use and contact customer support for repair or replacement options.
Error Code 404 – Data Card Error: This error suggests an issue with the SD card used for data storage. Remove and reinsert the SD card to ensure it's properly seated. If the error persists, try using a different SD card or consult the user manual for further guidance.

Troubleshooting Steps:

Restart the Device: Unplug the machine, wait for a few minutes, and plug it back in to reset the system.
Check Connections: Ensure all tubing, masks, and power cords are securely connected.
Inspect Components: Look for any visible damage or wear in the tubing, mask, and power cord.
Clean Regularly: Maintain cleanliness of the water chamber, filters, and tubing to prevent blockages and ensure optimal performance.
Consult the User Manual: For persistent issues, refer to the Luna 2 CPAP user manual or contact customer support.

📋 Summary Table of Common Luna II CPAP Error Alerts

Error Message	Meaning/Issue	Action
Power Failure	Device lost power during use	Restore power, check connections
Device Fault	No airflow detected	Check for blockages, contact supplier
Leak	Excessive air leak detected	Check mask/hose fit and integrity
Low Input Voltage	Power supply voltage too low	Check/replace adapter, use correct supply
Humidifier Failure	Humidifier malfunction	Inspect/reseat chamber, service if needed
Please Change Filter	Filter replacement time reached	Replace air filter
SD Card Full	SD card storage full	Download/delete data, replace SD card
Reinsert SD card	SD card not detected/failure	Reinsert or replace SD card

By understanding these error codes and following the recommended troubleshooting steps, users can maintain effective therapy and prolong the lifespan of their Luna II CPAP device.

🛠️ BMC CPAP Error Codes

BMC Medical's CPAP devices, including the RESmart GII and G3 series, are known for their affordability and user-friendly features. However, like all sophisticated medical devices, these machines can occasionally display error messages or alerts indicating specific issues. Understanding these codes—ranging from simple alerts to advanced diagnostic errors—helps ensure uninterrupted sleep therapy and timely intervention.

🔔 Common User-Facing Alerts:

Low Input Voltage!!: The machine isn't receiving sufficient power. Check connections or replace the adapter.
Humidifier Failure!!: Malfunction in the humidifier system. Inspect and reseat the water chamber or service if needed.
Please Change Filter!: Time to replace the air filter to ensure clean airflow.
Please Replace Tubing!: Indicates that tubing has worn out and must be replaced.
Please Replace Mask!: Suggests the mask has degraded over time—replace for better fit and performance.
SD Card Full! / Reinsert SD Card!: Data storage error—delete old data or replace the card. Reinsert if not detected.

⚠️ Technical Error Codes (E01–E75)

These are advanced error codes often used during diagnostics or servicing:

Error Code	Issue/Description	Recommended Action
E01 / Error 1	Overheating or temperature sensor fault	Allow device to cool; check sensor
E02	Motor stop / blower feedback error	Inspect motor, blower, controller
E03	Low blower speed	Check blower, main board, pressure sensor
E04	Low internal temperature or damaged sensor	Inspect main board and sensor
E07	Pressure sensor calibration drift	Recalibrate or replace pressure sensor
E08	Version mismatch – incorrect software installed	Reinstall correct software version
E09	Device parameter error	Check driver and circuit board
E12	Sensor or overheating error	Let device cool; inspect digital pressure sensor
E13	Temperature reading below 0°C	Likely sensor fault; service needed
E14	Blower overheating	Inspect blower and temperature sensors
E15	Damage to temperature sensor	Restart; if recurring, service required
E16	Missing hardware parameter	Unexpected sensor error; requires service
E17 / E18	BPAP software error	Install correct BPAP firmware
E19 / E20	Blower driver circuit or sensor damage	Service required
E21	Dual sensor overheat	Service required
E22 / E23 / E24	Blower current overflow (various cases)	Service required
E64	3.3V flow sensor voltage abnormality	Check power supply and flow sensor
E74 / E75	Calibration error in blower data	Recalibrate or send for service

Conclusion

Understanding CPAP error codes is crucial for uninterrupted therapy and device longevity. While many errors can be resolved with simple troubleshooting, some may require professional assistance. Regular maintenance, proper usage, and prompt action can ensure your CPAP machine remains reliable and efficient.

For more tips on CPAP maintenance or to explore CPAP machines for rent or purchase, visit Healthy Jeena Sikho.

FAQs on CPAP Error Codes

Q1. What should I do if my CPAP machine displays an error code?

Ans. First, refer to the user manual for the specific error code's meaning and troubleshooting steps. Common solutions include restarting the machine, checking the power connection, and inspecting the tubing and mask for leaks.

Q2. Why does my CPAP machine show an airflow blockage error (E03)?

Ans. This error typically occurs when the filter is dirty, the tubing is blocked, or the mask isn’t fitted correctly. Cleaning or replacing the filter and ensuring a secure connection often resolves this issue.

Q3. Can I fix a hardware fault (e.g., E06) on my CPAP machine myself?

Ans. No, hardware faults usually require professional repair or replacement by an authorized service center. Contact the manufacturer or your service provider for assistance.

Q4. How often should I clean my CPAP machine to avoid error codes?

Ans. Clean your CPAP components—mask, tubing, and humidifier—at least once a week. Replace filters regularly as per the manufacturer’s recommendations to prevent blockages and ensure smooth operation.

Q5. What causes a pressure calibration failure (E05) on my CPAP machine?

Ans. This error may result from leaks in the tubing or mask, incorrect settings, or internal machine issues. Re-calibrate the machine as instructed in the user manual, and check for leaks or blockages in the circuit.

Q6. Why is my CPAP machine not detecting the humidifier?

Ans. If your machine displays a humidifier error (e.g., E04), ensure the water chamber is correctly inserted and filled to the required level. Inspect the chamber for cracks or damage, and replace it if necessary.

Q7. What does a software update error mean on a CPAP machine?

Ans. A software update error (e.g., E07) indicates that the device requires a firmware update. Follow the manufacturer’s guidelines to update the software via Wi-Fi or USB.

Q8. How do I prevent recurring CPAP errors?

Ans. Regular maintenance, such as cleaning the device and replacing filters, helps prevent errors. Store the machine in a clean, dry location, and avoid using non-compatible accessories.

Q9. What should I do if my CPAP machine shows an excessive leak error (E409)?

Ans. This error occurs when there are significant leaks in the circuit. Check the tubing and mask for proper assembly, and ensure all connections are secure. Replace any damaged components if necessary.

Q10. When should I contact professional support for CPAP errors?

Ans. If basic troubleshooting steps don’t resolve the error or if the issue involves hardware faults, calibration failures, or persistent errors, contact the manufacturer’s customer support or an authorized service center for assistance.

To know more about BiPAP Machine or CPAP Machines, - Check out our related Articles