To retrieve the error code on your carbon monoxide alarm, perform the following steps:
Push and hold the Peak Level button. You will see an E and an O followed by a number.
Contact product support at 1-800-880-6788 and provide us the error code, along with the model number, assembly number and date of manufacture from the back of your unit.
If your unit is under warranty, a replacement will be mailed to you.
For more information about your specific alarm, refer to your user’s manual.