- HVAC
- Smoke and CO alarms
LED-NARANJA-2-PITIDOS
Netatmo orange light and two beeps on CO alarm: end of life
Risk level
High
Professional inspection is recommended.
Urgency
High
Quick answer
One orange flash and two beeps every 60 seconds on the Netatmo Smart Carbon Monoxide Alarm mean end of life: the built-in battery cannot be changed and the whole alarm must be replaced as soon as possible to stay protected from CO.
Safety first
Stop and check this first
- Do not try to change the battery or stretch the alarm's life: Netatmo states the battery is built in and the unit is replaced after 10 years.
Safe checks you can perform
- Count the beeps that come with the orange LED
- Pause the warning only with the central button
- Look for the alert in the Home + Security app
- Fit the new alarm and run the monthly test
Leave these tasks to a qualified professional
- Do not attempt this professional task: Netatmo support enquiry
- Do not attempt this professional task: Fuel-burning appliance check
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Netatmo support enquiry
What they doIf the alarm is well under 10 years old and already signals end of life, Netatmo support reviews the case using the serial number.
They must show youthe alarm's serial number and the purchase or installation date.
In writingthe case number and whether a warranty replacement is offered.
Fuel-burning appliance check
What they doA gas engineer inspects boilers, stoves and flues, especially while the home lacks a fully reliable CO alarm.
They must show youthe combustion analysis and the ventilation condition of each appliance.
In writingthe inspection date, the appliances checked and any defects found.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Count the beeps that come with the orange LED
- Who:
- you, next to the alarm for a couple of minutes.
- How:
- note how many beeps sound with each orange flash per minute: Netatmo's indicator table gives one for low battery, two for end of life and three for a fault.
- Result that matters:
- identifying exactly which warning the alarm is giving.
- If it is two beeps a minute:
- plan to replace the whole alarm.
- If it is three beeps:
- review the use and maintenance measures and, if it persists after 15 minutes, replace it anyway.
- Evidence to keep:
- a two-minute video showing the LED and sound.
Evidence: Smart Carbon Monoxide Alarm User guide (NCO01)
Pause the warning only with the central button
- Who:
- you, while you get hold of a replacement.
- How:
- according to the guide, a short press on the central button pauses the end-of-life sound for 48 hours; after 30 days it can no longer be deactivated, so treat it only as breathing room to replace it.
- Result that matters:
- buying a little time without disabling detection or removing the unit.
- If the pause works:
- use those hours to buy and fit the new alarm.
- If the beep will no longer pause:
- the 30 days have passed and replacement is urgent.
- Evidence to keep:
- the date the warning started and how often you paused it.
Evidence: Smart Carbon Monoxide Alarm User guide (NCO01)
Look for the alert in the Home + Security app
- Who:
- you, from the phone paired with the alarm.
- How:
- Netatmo says that a few weeks before the battery runs out the alarm sends a low-battery alert to your smartphone as well as the light and sound pattern.
- Result that matters:
- confirming the warning and knowing which alarm it is if you have several.
- If the app shows the alert:
- identify the affected alarm and where it is.
- If nothing arrives:
- the alarm may be offline, but the local warning still stands.
- Evidence to keep:
- a dated screenshot of the notification.
Evidence: Can I change the battery after 10 years?
Fit the new alarm and run the monthly test
- Who:
- you, with the new alarm fixed on its mount.
- How:
- hold the front button for at least 3 seconds: it should give 4 beeps, 5 seconds of silence and another 4 beeps with the red LED, while the green and orange LEDs stay on.
- Result that matters:
- confirming that CO protection is working again.
- If the sequence is complete:
- repeat the test every month as Netatmo asks.
- If any indicator does not behave as the guide describes:
- the alarm must be replaced.
- Evidence to keep:
- the day you mounted the new alarm and how it responded to the test.
Evidence: Smart Carbon Monoxide Alarm User guide (NCO01)
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- HVAC
- Brand
- Netatmo
- Product type
- Smoke and CO alarms
Known code variants
- Detector de Monóxido de Carbono Inteligente Netatmo pita
- Netatmo carbon monoxide alarm two beeps every minute
- Netatmo CO alarm battery 10 years
- Netatmo CO alarm end of life
- Netatmo CO alarm orange light
- Netatmo CO batería integrada 10 años
- Netatmo detector CO dos pitidos cada minuto
- Netatmo detector de CO fin de vida
- Netatmo detector de monóxido luz naranja
- Netatmo Smart Carbon Monoxide Alarm beeping
What it means
In the Netatmo Smart Carbon Monoxide Alarm user guide (NCO01), one orange LED flash and two beeps every 60 seconds mean end of life: after 10 years of use the alarm must be replaced. Netatmo's help center adds that the battery is built in, cannot be changed and that this warning appears a few weeks before it runs out, together with a phone alert. One beep is low battery and three are a fault. The warning alone never proves which part has failed, and other models may signal differently.
Warnings and stop conditions
- Highsource verified
Do not try to change the battery or stretch the alarm's life: Netatmo states the battery is built in and the unit is replaced after 10 years.
Evidence: Can I change the battery after 10 years?
Symptoms and causes
Probable causes · in order
- The CO sensor reaches 10 yearsCommon
Netatmo explains that all carbon monoxide alarms must be replaced after 10 years because the CO sensor wears out over time.
Evidence: Smart Carbon Monoxide Alarm User guide (NCO01) · Can I change the battery after 10 years?
- The built-in battery is running downCommon
The battery is designed to last the alarm's whole lifespan; the help center links this pattern to the weeks before it runs out.
Evidence: Can I change the battery after 10 years?
- Mixing it up with another orange LED warningPossible
The guide uses the same orange LED with one beep for low battery and three beeps for a fault, so count carefully.
Evidence: Smart Carbon Monoxide Alarm User guide (NCO01)
Virtual technician
Does LED-NARANJA-2-PITIDOS still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Smart Carbon Monoxide Alarm User guide (NCO01)
Netatmo · 2021 · manual
- 2
Can I change the battery after 10 years?
Netatmo · 2023 · official_doc
- 3
¿Se puede cambiar la batería después de 10 años?
Netatmo · 2021 · official_doc
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