Question about Kidde Nighthawk Combo Gas/co Detector

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Periodically emits 3 loud beeps. Displays 888.

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The CO detectors require replacement of the battery periodically.

Unlike smoke detectors, the detector element itself also requires replacement as well as the battery and is sold as a module with the battery attached.

Posted on May 02, 2010

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Combo Gas/CO Dectectors need to be replaced after 5 to 7 years of service. The sensors may not operate efficiently and will make the units give false readings.

Combo Gas/CO Dectectors are designed to give you protection against the harmful effects of Gas or Carbon Monoxide Poisoning.

If your unit is new, bring it back for a replacement. If the detector is used, make sure the unit has power and the battery has been replaced with a new one. Perform the reset function as per the manufacturer instructions. If that fails, do not hesitate, REPLACE the Gas/CO Combination Detector.

Buy your new Combination Gas/Carbon Monoxide Detector online.

Posted on Jul 27, 2010

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"888" should only be seen for less than a minute when your first plug in the alarm. It should then turn to "0". If you continue to get "888" on the display, you should contact Kedde.

Posted on May 02, 2010

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Another answer:

run the PSA diagnostics. to do so, press and holdany non-keyboard button( like the internet hotkey or access directbutton or even the speaker mute button) and then press the power buttonand power up your system. if your inspiron doesn't have a non-kbbutton, then press the <fn> key.
release both the buttons and the diagnostics begin to run.after thediags finish. if the monitor is working fine, it'll simply say"passed". however, if it fails it would emit a few beep codes.carefully check those beep codes:
1.) if you get a 3-3-3 or a 3-3-4 error beeps, then we use the LCDbuilt in self-test (BIST). boot to PSA diagnostics again. Watch thescreen and listen for the color bar test prompt tones emitted by thePSA Diagnostics. Press <N> or wait approximately 30 seconds tofail the color bar test. The system will emit a 3-3-3 or 3-3-4 PSAerror after failing the color bar test. Wait for two iterations of thefailure code then press <Y>.
Watch for the BIST color generation and listen for the single beeps that indicate LCD BIST is running.
NOTE: Patterns of flashing color should appear on the screen. Withevery color change, an audible beep will be heard. If the patterns ofcolor do not appear, and the beeps are audible, an LCD failure may bethe issue. If the patterns of color appear, a video card or motherboardfailure may be the issue.

2.)if you get an error code apart from 3-3-3 or 3-3-4 :Ensure thesystem is powered off. Press and hold the <Fn> key and press thepower button to power the system on. Release both buttons.
The PSA diagnostics sequence begins. Make note of any alert tones or error messages.
error codes:
123- memory fails
141,142,143,144,145,146 hard drive error
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122-memory test initialization test failure
111- fatal diagnostics exception.

i really hope you dont get any of these. these will help you determine,if you need to change the LCD. when you call dell, they will run youthrough these steps anyways. so if you finish them beforehand, you wontpay much to talk to them. cheerio then.
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