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CPAP Machine Troubleshooting Guide
CPAP Machine Troubleshooting Guide
Is your CPAP not working right? Use this guide to troubleshoot the most common ResMed AirSense problems — and learn when a professional repair is the smarter fix.
Start here
Before anything else, check the simple stuff: make sure the power cord is fully seated at both ends, the humidifier tub is clicked in, the tubing is firmly attached, and the air filter is clean. A surprising number of CPAP issues come down to a loose connection or a clogged filter. If you have worked through the basics below and your ResMed AirSense still isn’t right, an out-of-warranty device is usually a candidate for our flat-rate CPAP machine repair service.
Common CPAP problems & what to try
Quick checks for the issues we see most often on ResMed AirSense 10 and 11 machines.
1Won’t turn on
Try a different wall outlet and confirm the power supply light is on. If the screen stays dark with known-good power, the power supply or internal board likely needs repair.
2Error code on screen
Note the exact message and power-cycle the device. Persistent or repeating errors usually indicate a hardware fault that needs servicing.
3Loud or noisy
Clean or replace the filter and check the tubing for leaks. A grinding, whining or rattling motor that remains is a sign of a worn blower.
4Humidifier not heating
Confirm humidity is enabled and the tub is seated. If water still won’t warm, the heater plate or sensor may need repair.
5Pressure feels off
Refit your mask and check for leaks first. Therapy that stays too weak or too strong can point to a sensor or blower problem.
6myAir not syncing
Check cellular/Wi-Fi coverage and restart the device. Ongoing data drop-outs can have a hardware cause we can diagnose.
When to repair instead of replace
If the basics don’t solve it — and your machine is out of warranty — repairing is almost always cheaper than buying a new CPAP and getting a fresh prescription.
Air Voel is a Toronto-based, authorized ResMed repair provider. Whether it’s an AirSense 10 or AirSense 11, we diagnose the real fault, fix it with genuine-grade parts, and back it with a 90-day warranty — flat $399, shipping included Canada-wide.
Still not working? Let us repair it.
Start your repair online and we’ll send a prepaid label, or call our team for a hand.