Transcend 3 miniCPAP
Find the message on your screen below. Most alerts clear with a simple check: the water chamber seated, the tube connected, the filter clean. If a code keeps coming back after the fix, stop using the machine and contact your equipment supplier or the manufacturer.
What it means: The machine found a fault and is in a fault loop. The number of flashes before the pattern repeats is the fault number.
What to do: Count the flashes. Hold the Power button down until the yellow light stops flashing; when you let go the machine restarts in Standby. Somnetics suggests clearing a fault once, because a brief glitch can cause one. If it returns, contact your supplier or Somnetics at 877-621-9626.
What it means: Internal software fault.
What to do: Clear the fault once. If it returns, contact your supplier.
What it means: During therapy the sensor read more than 30 cm H2O, possibly from a pinched or disconnected internal pressure tube or a sensor fault.
What to do: Check that all tubes and hoses are connected, the mask fits without leaking and the filter is clean, then clear the fault. If it repeats, stop using the machine and call your supplier.
What it means: During therapy the sensor read about 0 cm H2O, which can mean an open or disconnected hose.
What to do: Reconnect the air tube firmly, check your mask fit and the filter, and clear the fault. If it returns, contact your supplier.
What it means: Something tried to set the clock to an invalid value. Somnetics says this should normally only happen at the factory.
What to do: Clear the fault and contact your supplier if it comes back.
What it means: In Standby the sensor read outside its normal range, from a blocked internal tube, a quick temperature change or a sensor fault.
What to do: Let the machine reach room temperature, check the hoses and filter, and clear the fault. If it returns, contact your supplier.
What it means: At startup the machine could not rebuild the index of your usage records.
What to do: Clear the fault. If it repeats, contact your supplier before you need a compliance report.
What it means: Part of the firmware appears corrupted, often from static discharge or a hardware problem.
What to do: Clear the fault once. If it returns, the machine needs service.
What it means: The blower stopped moving for 2 seconds during therapy.
What to do: Clear the fault. If it repeats, stop using the machine and contact your supplier.
What it means: The blower stalled and the voltage was too low, which points to the power supply, vehicle adapter or battery.
What to do: Switch to the PSA2 wall power supply on a working outlet, or recharge the battery. If it happens on wall power, contact your supplier.
What it means: The main chip reported excessive temperature.
What to do: Move the machine away from heat and bedding, check the filter and hoses, and clear the fault. Contact your supplier if it repeats.
What it means: The blower sensor reported excessive heat.
What to do: Make sure the air inlet is not blocked, the filter is clean and the hose is connected, then clear the fault. Contact your supplier if it returns.
What it means: The battery has a fault. A red light for only two seconds when you first plug it in is normal.
What to do: Do not use or charge that battery. Contact the supplier who provided it for a replacement.
No matching code. Check the exact text on the screen, or see the troubleshooting section on the machine page.
Last reviewed October 11, 2026. How we research · Report an error