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Phoenix Plus, Discovery IBailey Smoke & CO Alarms
(May 2022 Model Year)
View official manual on manufacturer's site ↗Also Fitted To This Caravan
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Possible Cause | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|---|
N/A | The smoke alarm stays silent when you press its test button, or its status light isn't blinking on its usual 40-second cycle | Obvious damage, wrong or disconnected battery, or a dirty/blocked sensor. | Look the unit over for visible damage, confirm the right battery type is fitted with the cover off and the connection secure, and give it a gentle vacuum using a soft-brush attachment. Fit a new battery. If that doesn't fix it, don't try repairing the unit yourself — the smoke alarm needs replacing. | DIY Safe |
Recommended partAffiliate linksView partHideThis handbook specifies a 9V battery for the smoke alarm. 9V batteryDuracell Plus 9V Alkaline Batteries (2 Pack) 6LR61~£6.50 for 24.7★ (15,000+ ratings), dispatched/sold by Amazon View on Amazon → | ||||
N/A | CO alarm emits an audible 'chirp' once a minute | A fault with the battery, sensor, or circuitry, including a low battery. | Replace the battery as soon as possible. | DIY Safe |
Recommended partsAffiliate linksView 2 optionsHideCheck which battery type your CO alarm takes (look at the batteries fitted now), then choose the matching pack: The handbook doesn't say which battery this alarm uses, so check yours before ordering. AA batteriesDuracell Plus AA Alkaline Batteries (12 Pack) 1.5V, LR06~£9.00 for 124.7★ (71,000+ ratings), dispatched/sold by Amazon View on Amazon →9V batteryDuracell Plus 9V Alkaline Batteries (2 Pack) 6LR61~£6.50 for 24.7★ (15,000+ ratings), dispatched/sold by Amazon View on Amazon → | ||||
N/A | CO alarm sounds (loud audible signal, alarm LED flashing red once a second) | Carbon monoxide detected in the caravan. | Stay calm and open every door and window for ventilation. Turn off and stop using any appliance that burns fuel. Get everyone out, leaving the caravan's doors and windows open, and don't go back in until the alarm stops. Anyone showing signs of CO poisoning needs medical attention. Keep the caravan out of use until your supplying retailer has fully serviced every appliance - a GAS SAFE registered installer must be the one to test the gas appliances. | Professional Intervention Required |
Frequently Asked Questions
Q: How do I switch on and test the CO alarm in my caravan?
To get the CO alarm running, take the batteries out of their packaging and fit them into the battery compartment, lining them up with the polarity markings - a correctly fitted battery gives a short beep straight away. Press the test button to check it's working: you should hear one beep, then 4 loud pulses, a short pause, another 4 pulses, and a final beep.
You can also check the green LED is flashing roughly every 30 seconds, which shows the unit has power - this is easier to spot with the lights off or somewhere dark.
Q: How do I maintain and test the smoke alarm in my caravan?
The smoke alarm runs off a single 9-volt battery, which under normal use should last around a year. A red light blinking every 40 seconds tells you the unit is powered up, and if you hear a chirp at that same 40-second interval, that's the low-battery warning - you'll get about a week's notice before it needs replacing, and it's worth doing so promptly since a flat battery means no protection if there's ever a real fire.
Pressing the test button checks the sensitivity, wiring, battery, and horn all in one go, and it's worth doing this after the caravan's been in storage, before setting off on a trip, and roughly once a week while you're using it. For general upkeep, give the alarm a gentle vacuum with a soft brush attachment every three months or so to stop dust affecting how well it works.