ResMed CPAP Error Codes and Troubleshooting

Introduction: When Your ResMed Machine Throws an Error—Here’s What It Means

Whether you’re using a trusted AirSense 10, the sleek new AirSense 11, or a robust Lumis VPAP, ResMed machines are designed for reliability and comfort. But like any advanced device, they sometimes flash an error code, make an unusual sound, or simply stop working mid-therapy. These alerts can feel intimidating—especially if they appear in the middle of the night. In this guide, we’ll break down ResMed error codes across all major models, from 001 to E-24, so you know exactly what they mean, how serious they are, and what steps you can take to fix them. Whether it's a humidifier fault, pressure issue, or firmware error, our goal is to help you resolve it quickly—and sleep better. CPAP मशीन एरर कोड को समझना ज़रूरी है ताकि आप सही समय पर इलाज और मशीन रिपेयर करवा सकें।

Which ResMed Devices Are Covered in This Guide

This guide focuses on the most widely used and searched-for ResMed CPAP and BiPAP models based on real-world user queries and verified device manuals. Whether you're using the AirSense 10 AutoSet, the AirSense 11 AutoSet, a Lumis 100 or 150 VPAP ST, or even an older ResMed S9, you'll find the exact error codes and their meanings listed here. We’ve also included a brief section on AirMini and cross-model errors—covering recurring alerts like Error 001, motor stall, and humidifier faults that tend to appear regardless of the machine model. This structured approach helps you quickly locate the exact fix based on the machine you’re using at home. Which CPAP errors do users in Delhi NCR most commonly report?

ResMed AirSense 10 AutoSet / Elite – Error Codes and Fixes

The ResMed AirSense 10 AutoSet and Elite are some of the most trusted machines used for treating obstructive sleep apnea. ResMed मशीन की सबसे आम समस्याएं क्या हैं? चलिए जानते हैं इनके बारे में हिंदी में। Can you adjust the ResMed AirSense 10 pressure setting on your own in Delhi? But over time, they may display error codes or alerts tied to blowers, sensors, SD cards, or humidifiers. Here’s a breakdown of the most common problems users report and what each message actually means:

Error / Message	What It Means	Fix / Action
Error 001	Hardware fault or internal error	Requires service; may need PCA replacement
Error 006 / 007 / 008	Blower motor stalled or failed	Replace blower motor or mainboard
Error 010 / 011 / 012	Flow sensor stuck or not transmitting data	Replace flow sensor or main PCB
Error 013	Pressure sensor malfunction or reading issue	Recalibrate or replace main PCB
Error 017 / 018	Software or memory-related faults	Service required; mainboard may need replacement
Power connector not fully inserted	Adapter is loose or not seated	Reseat the power cord securely into the port
Motor life exceeded	Blower motor has hit 21,900-hour threshold	Contact service center to replace motor
Water leaking from chamber	Chamber cracked or misaligned	Replace chamber; ensure it's seated properly
Blocked inlet detected	Filter clogged or air path blocked	Clean or replace air filter, clear intake
High leak detected	Air escaping from mask or humidifier	Reseat mask, check seal, tighten tubing
SD card error / corrupted	SD card not detected or damaged	Reinsert, reformat, or replace the SD card
Device temperature too high	Overheating due to environment or motor stress	Move to a ventilated area; power off if it persists
Software upgrade in progress	Firmware update running	Allow 10+ minutes; don’t unplug during update

These alerts may show on-screen with icons, flashing messages, or via a red light. Treating them early—especially motor or SD card errors—prevents escalation into full service-required conditions. अगर आपकी CPAP मशीन बार-बार E-83 या E-89 एरर दिखा रही है, तो तुरंत सर्विस कराएं। Can you fix the E-89 error on ResMed AirSense 10 yourself in Delhi or Gurgaon, or do you need a professional?

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ResMed AirSense 11 Error Codes & Fixes 

While the ResMed AirSense 11 introduced a modern touchscreen and updated algorithms, it still shares many core error types with the AirSense 10. Users have reported numeric codes ranging from Error 1 to Error 24, typically linked to blower faults, pressure sensor errors, flow sensor failures, or firmware glitches. If your ResMed CPAP machine isn’t working in Delhi, can you reset it yourself? The newer interface makes alerts more visible, but the causes and fixes remain rooted in hardware and calibration issues. humidifier सही से जुड़ा है या नहीं, यह भी एक बड़ी वजह हो सकती है — इसे दोबारा जांचें।

Error Code / Message	Cause	Recommended Fix
Error 1, 6, 7, 8	Blower motor faults or stalling	Replace motor via authorized service center
Error 3	Pressure sensor calibration failure	Try recalibration; may require PCA replacement
Error 4, 5	Undefined software or circuit error	Contact ResMed support; device likely needs evaluation
Error 9	Mainboard or control failure	Service center replacement of PCA
Error 10–13	Flow sensor failure or signal loss	Requires flow sensor and/or mainboard replacement
Error 14, 15, 17, 18	Software or PCB failure (data/logic layer)	Device needs diagnostics and possible board replacement
Error 21, 23, 24	Severe hardware or calibration fault	Remove SD card, restart; escalate to service if repeated
System Fault: Error 4 / X	General hardware failure	Let device cool, check airflow, contact service if unresolved
Motor life exceeded	Device reached expected lifespan (~21,900 hrs)	Replace blower motor and recalibrate
Water leak / humidifier alert	Faulty chamber or improper seating	Replace or reposition water tank securely
High Leak Detected	Loose mask or tube connection	Inspect mask fit, humidifier lid, and hose attachments
Screen not waking up	Power glitch or app-display sync delay	Tap screen, verify adapter; use MyAir if issue continues
Device not powering on	Bad outlet or adapter	Swap outlets, check green light on brick, replace if needed

With AirSense 11, some alerts may show as pop-ups while others appear during startup. In either case, addressing airflow blockages and checking the power supply often fixes basic faults. For more persistent issues, especially numbered codes, a technician will likely need to replace key components. Where can you find ResMed CPAP repair service in Noida, Delhi, NCR? Find out from Healthy Jeena Sikho.

पंजाब और चंडीगढ़ के मरीजों के लिए – Healthy Jeena Sikho से CPAP मशीन किराये पर लें या सर्विस कराएं।

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ResMed Lumis 100/150 VPAP ST – Error Codes & Fixes 

The ResMed Lumis 100 and 150 VPAP ST are designed for patients with serious respiratory conditions requiring non-invasive ventilation. These machines use a more technical error reporting system, which includes both numeric codes (e.g. Error 206, 409, 420) and priority-based alarms. Many errors stem from issues with circuit compliance, oxygen calibration, or internal hardware faults.

Error Code / Message	Cause	Recommended Fix
206, 404–406, 415, 426	General hardware failure	Contact a ResMed service center for full diagnosis and repair
Error 409 (Learn Circuit Failed)	Leak or misassembled circuit	Check for leaks, refit the circuit, and repeat the Learn Circuit test
Error 420 (High Compliance)	Circuit flow resistance out of range	Block the circuit temporarily and re-run Learn Circuit
Error 303 (Oxygen sensor calibration failure)	Oxygen added during Learn Circuit	Ensure no supplemental oxygen during test; rerun Learn Circuit
Error 004 / 005 / 006	Internal software, blower, or pressure sensor faults	Restart device; if repeated, service required
Error 008	Humidifier or heating plate issue	Remove and reseat humidifier; replace if unresolved
Blocked Tube Detected	Tube is occluded or kinked	Straighten or replace tubing
Power Supply Error	Incorrect adapter or unstable voltage	Use official ResMed adapter only
SD Card Not Detected	Card missing, corrupted, or incorrectly inserted	Reinsert or replace card; format if needed
Water Tub Leak / Humidifier Error	Faulty seating or cracked chamber	Reseat tub and inspect; replace if leak persists
Low Minute Ventilation	Patient breathing below preset threshold	Check patient condition and settings
Apnea Alarm	Breathing paused longer than limit	Check mask seal and patient response

🔔 Alarm Priority Levels:

• Red Light + Loud Alarm: Critical—check patient + device immediately

• Yellow Light + Medium Beep: Moderate issue—check mask/circuit soon

• Yellow Light + Soft Beep: Low concern—inspect SD card, tubing, or filter

The Lumis series is used in more complex settings, so early response to codes like 409, 420, or 303 can prevent therapy breakdown or loss of circuit calibration. Always re-run the Learn Circuit test after correcting tubing or humidifier faults. Where to contact for buying or renting ResMed CPAP in Delhi, Noida, Chandigarh, or Ludhiana?

ResMed S9 Series – Error Codes & Fixes 

Although the ResMed S9 Series is an older generation of CPAP machines, it’s still widely used in home therapy setups across India. Getting an alarm or red light on your CPAP machine in Delhi? What does it mean? Because of its age, many users encounter hardware degradation errors, humidifier faults, and SD card issues after years of consistent use. Below is a list of the most common ResMed S9 errors and what to do if they appear:

Error / Message	Cause	Recommended Fix
Motor Life Exceeded	Blower motor has reached its 21,900-hour design life	Replace motor and recalibrate via authorized service center
Motor Fault	Blower malfunction or failure	Replace motor at ResMed-certified repair center
Humidifier Fault	Component failure or water damage	Power off, dry thoroughly, and replace humidifier if needed
Invalid PSU / Power Supply Error	Adapter not recognized or incompatible	Use genuine ResMed 30W or 90W power supply; insert plug fully
High Temperature Fault	Device overheating from blocked airflow or external heat	Let cool down, relocate to ventilated area, reconnect power
Air Filter Blocked	Dirty or clogged filter	Remove and replace filter; restart device
Air Tubing Blocked	Kinked or occluded hose	Check for bends or obstructions; reconnect securely
High Leak Warning	Poor mask seal or loose connections	Adjust mask, replace old tubing, check humidifier seal
Water in Tubing	Humidity setting too high for ambient room	Lower humidifier setting and drain tube
Check Power Supply Connection	Plug not inserted correctly or covered	Reinsert DC plug, keep supply uncovered and dry
Card Error / Not Detected	SD card missing, corrupted, or removed incorrectly	Reinsert card, wait for home screen; replace if needed
Calibration Data Corrupted	Board memory failure or software bug	Restart device; if unresolved, PCA board replacement needed

Many S9 users report these issues surfacing around the 4–5 year mark. To extend the device’s life, regular filter changes, proper storage, and using original accessories are key. And always handle SD cards carefully—removing them mid-write is a leading cause of boot errors.

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Frequently Asked Questions (FAQ)

1. What do the most common ResMed CPAP/VPAP error codes mean?ResMed machines display error codes and messages for issues like motor faults, sensor errors, power supply problems, leaks, and humidifier failures. Each code or alert points to a specific problem—such as “Motor life exceeded,” “Blocked tube detected,” or “System fault, refer to user guide.” 

2. How do I fix a “Blocked tube detected” or “Air tubing is blocked” error?

• Check your tubing for kinks, blockages, or water buildup.

• Remove and reconnect the tubing to the device.

• Replace tubing if damaged or persistently blocked

  
  

3. What should I do if my ResMed device shows “System fault” or an error code like 004, 005, or 006?

• Power off the device and unplug it for at least 1 hour.

• Move it to a cool, dry area and restart.

• If the error persists, contact your provider or a ResMed Authorized Service Center, as these usually indicate hardware or sensor faults requiring professional repair.

  
  

4. Why does my machine say “Motor life exceeded, contact care provider”?This means the blower motor has reached its design life (about 21,900 hours or 5 years of nightly use). The device needs a new blower motor, which must be replaced and recalibrated by an authorized service center

5. What causes “High leak detected” or “Check mask fit” messages?

• Mask may be loose or incorrectly fitted.

• Tubing connections may not be secure.

• Humidifier chamber or seals may be leaking.

• Adjust your mask, check all connections, and replace worn components as needed

6. How do I resolve SD card errors or “Card error, please remove SD card and contact service provider”?

• Remove and reinsert the SD card.

• If the error persists, try a new SD card.

• Only remove the SD card when the device is off or not writing data.

  
  

7. My device won’t power on. What should I check?

• Ensure the power cord is fully inserted and the outlet is working.

• Use only a genuine ResMed power supply.

• Try a different outlet or power supply if available.

• If still unresponsive, contact your provider

  
  

8. Can I clean and reuse my ResMed filter?No, ResMed filters are not designed to be cleaned—replace them regularly as recommended in your user manual.

9. Why is water leaking from my CPAP/VPAP machine?

• The water chamber may be cracked or not seated properly.

• Always use a genuine ResMed water chamber and ensure it is installed correctly.

10. What should I do if my device overheats or shows a high temperature fault?

• Move the device to a well-ventilated area.

• Allow it to cool before restarting.

• Make sure the power supply is not covered or obstructed.

11. What is the ramp feature and how does it help?The ramp feature starts therapy at a lower pressure, making it easier to fall asleep. The device gradually increases pressure to your prescribed level over a set time.

12. How do I find my device’s serial number or device number?Both numbers are located on the label at the back of your device.

Need Help with Your CPAP or BiPAP Machine?

At Healthy Jeena Sikho, we specialize in providing complete respiratory care solutions — including ResMed CPAP and BiPAP machines — for rental and sale. Whether you’re facing machine errors, need expert setup, or looking for affordable equipment on rent, our experienced team is here to help. We proudly serve across Delhi, Noida, Gurgaon, Chandigarh, Ludhiana, and Jalandhar, with same-day delivery and on-site support.

📞 Call us today at +91 9876978488 for expert advice,📱 Or message us directly on WhatsApp for quick assistance.

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Conclusion

From the feature-packed AirSense 11 to the legacy workhorse ResMed S9, every ResMed CPAP or VPAP device is built with safety checks designed to protect you. But when error codes like 001, 420, or motor life exceeded flash on the screen, it's natural to feel alarmed—especially during the middle of the night. This guide helps you decode these messages model by model, giving you the clarity to act fast and get back to therapy. Whether it’s reseating your SD card, replacing a humidifier chamber, or knowing when it’s time to call a service technician, your response can make the difference between a short pause and a prolonged therapy break. Bookmark this page, keep your model's error codes handy, and rest easy knowing you’re prepared for any alert that comes your way.

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