What does 888 mean on a carbon monoxide alarm?

Any time you push the Test/Reset button, the unit will go through a series of numbers that are programmed to test the unit’s internal diagnostics. This will start out with an 888 reading, then display numbers usually in the 200 ranges, then back to 888, and back to zero.

How do you reset a Nighthawk carbon monoxide detector?

Step 1: Press on the reset switch, you can see it on the anterior panel of your device. The position of the switch varies from one to another based upon the model and brand of the nighthawk carbon monoxide detector. Step 2: Hold the reset switch for about 5 to 8 seconds.

How do I stop my carbon monoxide alarm from beeping in the end-of-life?

Your detector may be reaching its end-of-life cycle, and may need to be replaced. Many carbon monoxide and smoke detectors come with a “Hush” feature, which will stop the beeping for 72 hours. To silence the beeping, press and hold the “Hush” or “Test” button.

What is an unsafe level of carbon monoxide?

As CO levels increase and remain above 70 ppm, symptoms become more noticeable and can include headache, fatigue and nausea. At sustained CO concentrations above 150 to 200 ppm, disorientation, unconsciousness, and death are possible.

At what level does carbon monoxide detector go off?

Low level: 50 PPM and less. Mid level: Between 51 PPM and 100 PPM. High level: Greater than 101 PPM if no one is experiencing symptoms….Carbon Monoxide Levels That Will Set Off Your Alarm.

Carbon Monoxide Level Alarm Response Time
50 PPM 8 hours
70 PPM 1 to 4 hours
150 PPM 10 to 50 minutes
400 PPM 4 to 15 minutes

Do carbon monoxide detectors need to be reset?

Carbon monoxide detectors are sensitive devices designed to trigger an alarm if there are dangerous levels of carbon monoxide, or CO, in your home. Since CO gas can be deadly to humans and pets, it’s important to test and reset each of your detectors as frequently as the manufacturer recommends.

Where is the reset button on a carbon monoxide detector?

How to Reset CO Detectors

  1. Locate the reset button. The reset button is found on the front panel of the device.
  2. Hold down the reset button for five to 10 seconds.
  3. Release the reset button. The device will either beep, a light will light up to indicate the device is now working, or both.

Why is my carbon monoxide detector randomly beeping?

If your detector is low on battery, you will likely hear a short chirp every minute. To warn of dangerous CO levels, most detectors will beep 4 or 5 times in a row about every 4 seconds. Do not mistake dangerous levels of poisonous gas for a detector with low battery!