Question 1

The carbon monoxide alarm chirps once a minute and its Fault LED flashes once a minute too, and can keep this up for as long as 30 days.

Accepted Answer

Possible cause: The detector's continuous self-check has found the sensor/circuitry settings to be incorrect, or the power pack has become low.. The power pack is built to last the detector's entire lifespan and can't be replaced separately, so this fault means the whole detector needs replacing - once its power pack is drained it can no longer protect against CO poisoning. Get in touch with your dealer or the detector's manufacturer.

Question 2

CO alarm chirps once a minute and the Fault LED flashes once a minute

Accepted Answer

Possible cause: The detector's own self-check has found an issue with its sensor/circuitry, or its power pack is running low - this can carry on for up to 30 days.. Because this detector's power pack isn't user-replaceable and is rated for the product's whole lifetime, a fault signal like this usually means the unit itself needs replacing - contact your dealer for a new detector.

Error Code / Indicator	Symptom / Meaning	Possible Cause	Step-by-Step DIY Fix	Suggested Actions
`N/A`	The carbon monoxide alarm chirps once a minute and its Fault LED flashes once a minute too, and can keep this up for as long as 30 days.	The detector's continuous self-check has found the sensor/circuitry settings to be incorrect, or the power pack has become low.	The power pack is built to last the detector's entire lifespan and can't be replaced separately, so this fault means the whole detector needs replacing - once its power pack is drained it can no longer protect against CO poisoning. Get in touch with your dealer or the detector's manufacturer.	Professional Intervention Required
`N/A`	CO alarm chirps once a minute and the Fault LED flashes once a minute	The detector's own self-check has found an issue with its sensor/circuitry, or its power pack is running low - this can carry on for up to 30 days.	Because this detector's power pack isn't user-replaceable and is rated for the product's whole lifetime, a fault signal like this usually means the unit itself needs replacing - contact your dealer for a new detector.	Professional Intervention Required

Coachman Smoke & CO Alarms

Master Troubleshooting & Diagnostics Matrix