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ErrBase

ResMed CPAP Error 24: Climate Control Fault on AirSense 10

Quick Answer

Resmed Cpap 24: Error 24 on the ResMed AirSense 10 indicates a fault in the ClimateLine or HumidAir climate control system - specifically that the device's heated humidifier or heated tube temperature sensor is reporting an out-of-range condition or a heating element failure. The climate control subsystem on the AirSense 10 manages both the HumidAir heated chamber and the optional ClimateLine heated tube, and Error 24 fires when this system cannot maintain or verify the target temperature. The m

ResMed Error 24 is a climate control fault specific to the HumidAir and ClimateLine integrated heating system on the AirSense 10. The AirSense 10 uses a sophisticated temperature feedback loop between the humidifier heating plate, the water chamber temperature sensor, and the optional ClimateLine heated tube thermistor - Error 24 fires when this feedback loop reports an anomaly. The most common user-resolvable cause is an improperly seated HumidAir water chamber: if the chamber does not click fully into its dock on the device, the temperature sensor contacts are not engaged and the device detects a climate control fault. An empty water chamber when climate control is enabled, or a ClimateLine tube with a damaged heating element, are the next most common causes. Disabling the humidifier temporarily and running the device in standard CPAP mode can confirm whether the fault is in the climate system or the core device.

ResmedCpapSeverity: medium65% DIY Success
Time to Fix
5–20 min
Difficulty
beginner
Parts Cost
$0 – $0
Tools Needed
Soft dry cloth (for cleaning dock contacts), Distilled water (for humidifier - prevents mineral buildup)

What Does the 24 Code Mean?

Error 24 is a ClimateLine or HumidAir heating system fault. Reseat the water chamber and verify ClimateLine tube connections before suspecting hardware failure.

Most Likely Causes

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

HumidAir water chamber not seated fully in its dock40%
Empty water chamber with climate control mode enabled24%
ClimateLine heated tube connection loose or damaged14%
Temperature sensor on chamber dock faulty12%
HumidAir heating plate element failure10%

Symptoms You May Notice

  • Error 24 displayed during or after therapy
  • Humidifier not warming the air despite being enabled
  • Device starts therapy but climate control is inactive
  • ClimateLine tube not warming during therapy
  • Water remains at room temperature in chamber after a full night

Can you reset a Resmed cpap to clear the 24 code?

AirSense 10: hold the home button for 5 seconds, navigate to Settings > Device > Reset Device. AirSense 11: Settings > My Options > Device Options > Reset. Always reseat the water chamber after a reset before testing.

Tools Required for Diagnosis

Soft dry cloth (for cleaning dock contacts)Distilled water (for humidifier - prevents mineral buildup)

Diagnostic Checklist

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

1

Remove the HumidAir water chamber completely from the device

Remove the HumidAir water chamber completely from the device. Clean the chamber dock contacts on the device with a dry cloth. Refill the chamber to the fill line with distilled water (do not use tap water - mineral deposits damage the heating plate). Slide the chamber firmly back into the dock until you feel and hear it click into position.

2

If using a ClimateLine heated tube

3

Test with the humidifier disabled

4

If basic reseating and connection checks do not resolve Error 24

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
ResMed HumidAir water chamber (standard or travel, fits AirSense 10)N/A · $0–$0
ResMed ClimateLine heated tube (if tube is damaged)N/A · $0–$0

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs
Labor Approach
Our Verdict
REPLACE
Estimated Cost: $0 (Parts) vs $90 (New Machine)

Frequently Asked Questions

Can I still use my CPAP if it shows Error 24?
Yes, with a caveat. If you disable the humidifier (Settings > Humidifier > Off), the device will typically run normally for therapy without the climate control system active. You will not have heated humidification, but you can continue therapy while you arrange a fix. Do not use the device with humidification enabled if Error 24 is present - the heating system may not be operating correctly.
Why does ResMed recommend distilled water for the humidifier?
Tap water contains minerals that deposit on the heating plate as the water is evaporated during therapy. Over time, mineral scale reduces heating efficiency, can damage the plate surface, and may clog the temperature sensor contacts in the dock. Distilled water has these minerals removed and extends the life of both the water chamber and the heating plate significantly.
Is the HumidAir water chamber covered under the AirSense 10 warranty?
Yes. The HumidAir water chamber and heating dock are integral parts of the AirSense 10 and are covered under the 2-year manufacturer warranty when the fault is due to normal use. Physical damage from dropping or using tap water that causes scale damage may not be covered. Contact your DME provider to initiate a warranty claim.

Related Resmed Cpap Error Codes

Code: HUBResMed CPAP Error Codes: Complete AirSense 10 and 11 Fault GuideCode: HUMIDIFIERResMed CPAP Humidifier Not Working: Fix HumidAir on AirSense 10Code: HUMIDIFIER-FAULTResMed CPAP Humidifier Fault: AirSense 10 HumidAir Error FixCode: HEAT-ERRORResMed CPAP Heating System Error: Fix ClimateLine Fault

Models Known to Experience 24 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

Last verified for technical accuracy on March 15, 2026