ResMed CPAP Keeps Shutting Off: Why It Stops and How to Fix It

Quick Answer

The ResMed AirSense 10 and 11 have a SmartStart/SmartStop feature that automatically starts therapy when you breathe into the mask and stops it when you remove the mask. This feature is the number one cause of unexpected shutoffs - if the mask shifts during sleep and the device loses the breathing signal for a few seconds, SmartStop triggers and powers down therapy. The fix is simple: disable SmartStop in the device menu (Settings > Mask & Comfort > SmartStop > Off). Other causes include a failing power supply with intermittent contact, high mask leak causing the device to lose the breathing signal, and overheating from a blocked air intake.

ResmedCpapSeverity: medium85% DIY Success

Time to Fix

2–15 min

Difficulty

beginner

Parts Cost

$0 – $0

Tools Needed

Soft dry cloth

What Does the KEEPS-OFF Code Mean?

Your ResMed CPAP likely keeps shutting off because SmartStop is enabled and misreading mask movement as removal. Disable SmartStop in settings, or check for power supply and leak issues.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

SmartStop feature triggering on mask movement40%

High mask leak causing loss of breathing signal24%

Power supply with intermittent connection14%

Device overheating from blocked air intake12%

EPR set too high making exhalation undetectable10%

Symptoms You May Notice

Device stops delivering air during sleep
Waking up to a silent, powered-off CPAP
myAir app showing multiple short therapy sessions per night
Device displays normal shutdown (not error code)
Usage data shows gaps in therapy hours

Can you reset a Resmed cpap to clear the KEEPS-OFF code?

AirSense 10: Settings > Device > Reset Device. AirSense 11: My Device > Factory Reset. A reset restores SmartStop and all comfort settings to factory defaults. After resetting, remember to disable SmartStop again if it was causing the shutoff issue.

Tools Required for Diagnosis

Soft dry cloth

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

Disable SmartStop

Disable SmartStop. On AirSense 10, navigate to Settings > Mask & Comfort > SmartStop and set it to Off. On AirSense 11, go to My Comfort > SmartStop and toggle it off. With SmartStop off, the device will only stop when you press the Stop button.

Check the power supply connection

Check your mask leak rate in the myAir app or on the device screen

Ensure the device has proper ventilation

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name	OEM Number	Estimated Price
ResMed AirSense 10 Power Supply UnitN/A · $0–$0	N/A	$0 – $0
ResMed mask cushion (model-specific)N/A · $0–$0	N/A	$0 – $0

Verify part fitment for your Resmed model

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs

Labor Approach

Our Verdict

REPLACE

Estimated Cost: $0 (Parts) vs $800 (New Machine)

Frequently Asked Questions

What is SmartStop and should I keep it on?

SmartStop automatically stops therapy when you remove your mask. It detects the absence of breathing at the mask port. While convenient, it frequently causes false shutoffs during sleep when the mask shifts. Many sleep technicians recommend turning it off - you can simply press the Stop button when you wake up.

Can a CPAP overheat and shut off?

Yes. If the air intake vent is blocked by bedding, a wall, or dust buildup, the motor can overheat and the device will shut down to protect itself. This is more common in summer or in rooms above 80 degrees F. Always place the device on a nightstand with clear airflow around it.

My CPAP shuts off at the same time every night - why?

If the shutoff happens at a consistent time, check if you have a bedside lamp or other device on the same outlet timer. Also check if your power strip has an auto-off timer feature. If the shutoff correlates with a sleep position change (viewable in some sleep tracking apps), SmartStop triggering from mask movement is the most likely cause.

Related Resmed Cpap Error Codes

Code: HUBResMed CPAP Error Codes: Complete AirSense 10 and 11 Fault Guide Code: WONT-TURN-ONResMed CPAP Won't Turn On: Causes and Fixes Code: HIGH-LEAKResMed CPAP High Leak Detected Code: NOT-WORKINGResMed CPAP Not Working: Diagnosis and Fixes

Models Known to Experience KEEPS-OFF Errors

This repair applies to most Resmed cpaps with this error code. Common model numbers include:

AirSense 10 AutoSet, AirSense 10 CPAP, AirSense 10 Elite, AirSense 10 For Her, AirSense 11 AutoSet, AirCurve 10 VAuto, AirCurve 10 ST

Last verified for technical accuracy on March 15, 2026