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How does a gas detector work?

work by signifying high levels of gases through a series of audible or visible indicators, such as alarms, lights or a combination of signals. While many of the older, standard gas detector units were originally fabricated to detect one gas, modern multifunctional or multi-gas devices are capable of detecting several gases at once. Some detectors may be utilized as individual units to monitor small workspace areas, or units can be combined or linked together to create a protection system.
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Jan 30, 2013 | Measuring Tools & Sensors

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We cannot get any lp to any appliances

Obviously the detector must be faulty, or bad connection from detector to gas valve on system. You'll have a power wire coming in to back of detector that you need to attach directly to wire going to gas valve in line near connection at tank. Use a continuity tester/multimeter to determine which wire. Check all connections at back of propane detector and make sure power to it, before resorting to direct connection temporarily until detector can be replaced. Should have power in only on one wire when off, and power at other wire(s) except ground when turned on. That wire will be (should be) the one going to gas valve near tank.

Sep 05, 2011 | Rv Motorhome Dual Co & Lp Gas Alarm...

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Our carbon monoxide alarm went off for around 20 seconds until i lifted it to look at it. I hit reset button and it flashed up 237 and then went back to zero and has stayed that way...i had toast on at the...

Not likely the toast did it, Unless, you burned the toast or the detector was sitting right next to the toaster or the burned toast. If it is that sensitive, it will start falsing a lot. Placement of the detector is very important. Despite what the Owners Manual may say, it should not be in the same room as a gas appliance. At least not as a combo detector. Gas and co are two different things. They react differently when exposed to the air. Co is produced by incomplete combustion or smoke that fills a room and uses up all the oxygen. Gas (at least Liquid Propane Gas) is heavier than air. It doesn't rise, it falls.

So why have a combo detector that should be placed in a wall outlet, no more than 2 feet off the floor and expect it to quickly pickup carbon monoxide?

Quite frankly, these Kidde Combo Detectors have quite a long history of problems, Unfortunately, it doesn't seem to bother the manufacturer. They just keep producing them.

I have a total gas house, so to speak. Gas Heat, Vent-free Gas Logs in the fireplace, Gas Water Heater, Gas Dryer, Gas Range and a Gas Standby Generator. Do I have one of these detectors? No, because all my gas appliances have safety features buit-in by the manufacturers to shut them down automatically if something goes wrong. And all these gas appliances are serviced and tested at least annually. However, that's not to say I don't have Smoke Detectors. I do, 2 of them and they're placed in the sleeping areas of the house.

Sorry for the long diatribe. I have helped over 30 people who have had problems with this combo detector in the last 30 days. Some had to return theirs to Kidde for replacement, because they were constantly malfunctioning. I truly hope that not the case with yours.

My best advice is to clean the unit regularly as dust and lint accumulates in the sensor opening. You can clean it with a can of compressed air with a straw nozzle (like you clean your compute with). Take the battery out and you'll have access to be able to blow the dust and lint out.

I hope I have been able to help you in some way.

Feb 15, 2011 | Kidde Nighthawk Combo Gas/co Detector

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Our gas/co2 detector is going off we don't smell propane which is our gas source. the detector emits the word gas

if you have a furnace it could be detecting the exhaust emission. if none of the above then get it recalibrated or buy a new one if its cheap.

Jan 30, 2011 | Kidde Nighthawk Combo Gas/co Detector

1 Answer

The detector is going off and reading err. message

There have continual problems with this unit. It may be that you have it mounted or plugged-in in the wrong place. As a co detector it should not be mounted in the same room as the gas appliance or wood burning stove. In addition, as a co/gas detector it should NEVER be mounted on the ceiling. A co/gas detector should always be mounted or plugged-in to a wall receptacle that is at least, but not more than 2 feet off the floor and not in the same room as the gas appliance. It will false alarm and give error messages when in fact nothing is wrong. If the problem continues, return it to the place of purchase for a new one.

Jan 15, 2011 | Kidde Nighthawk Combo Gas/co Detector

1 Answer

The detector goes off whenever we wash the floor

Your gas detector utilizes a sensor that is sensitive to certain types of cleaning products especially ones that contain ammonia. Products that are dispersed by aerosol spray can also cause false alarms. Be very careful when using these types of products in close proximity as it is possible to poison the sensor. If this occurs it will permanently damage the detector and you will have no other recourse but to replace the detector.

Jul 21, 2010 | Kidde Nighthawk Combo Gas/co Detector

3 Answers

Periodically emits 3 loud beeps. Displays 888.

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.

May 02, 2010 | Kidde Nighthawk Combo Gas/co Detector

1 Answer

I have 7 year old smoke and carbon monoxide alarm...I have put a new replacement battery and detector is chirping every 15 seconds or so

Check the expiry date on this unit. The manufacturer recommends replacement usually after 5 to 7 years depending on the model.

You bought a Combo Gas/CO Detector for protection against the hazards of Gas and Carbon Monoxide poisoning. A new unit will give you the peace of mind you are looking for.

Visit my website for more information and view most Brands and Models of Carbon Monoxide and Combo Gas/CO Detectors.

Dec 20, 2009 | Kidde Nighthawk Combo Gas/co Detector

1 Answer

We have a combination carbon monoxide/gas alarm and the gas alarm went off. We are having a girls party and it is in the basement and they are using nail polish and nail polish remover, some of it spilled...

This is normal your detector is sensing particles in the air.
Also You should never buy a duel detector. Because if one becomes
defective you loose protection from both detectors. It is recommended
to use two separate detectors, because different detectors are installed at different heights in the house. Not all gases are the same weight.
Also carbon or gas detectors should be replaced every five years. and smoke detectors every 10 years.

Sep 06, 2009 | Kidde Nighthawk Combo Gas/co Detector

1 Answer

Gas alarm 220

All gas detectors have an internal sensor that can be "poisoned" if you are not careful. They are especially sensitive to cleaning products that contain amonnia or aerosal spray cans. If these products are used in close proximity to the detector there is a good chance of permanently damaging the unit. The only recourse you have is to buy a new unit.

Apr 16, 2009 | Kidde Nighthawk Combo Gas/co Detector

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