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Russell H.
Russell H., Service Tech
Category: Home Improvement
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Experience:  8+ years of professional experience
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I have a USI 5304L smoke detector that is chirping non-stop

Customer Question

I have a USI 5304L smoke detector that is chirping non-stop every minute or so for over a day. Why would it do that?
JA: What's the make/model of your device? How old is it?
Customer: It is a USI 5304L that is less than a year old in a new house of the same age, 10 months to be exact.
JA: How long has this been going on? What troubleshooting have you tried?
Customer: This has been happening for over 24 hours. We try pushing the only button on it which of course triggered the audio alarm. What else can be done?
JA: Anything else you want the electronics expert to know before I connect you?
Customer: No.
Submitted: 8 months ago.
Category: Home Improvement
Expert:  Russell H. replied 8 months ago.

Hi, thank you for contacting My name is Russell. I will do my best to provide the right answer to your question.

Chirping smoke detector are usually those with low batteries.

Replacing the battery in the smoke detector is the usual remedy.

Since your smoke detector is the hardwired type, it might not even have a battery in it when opened.

And the wiring to it may have to be checked on also. And if it got dust in it, or might have, it will need to be blown out with an air compressor, to clean the sensor of fine particulate matter that also might lead to the chirping.

Check the breakers: if one is tripped, it might be depriving the detector of power (through its wiring.)

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