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AMARILLO-INTERMITENTE
Google Nest Doorbell blinking yellow light: not enough power
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Medium
Quick answer
If your wired Nest Doorbell blinks yellow, it isn't getting enough power: it won't stream video or send alerts, though it should still work as a regular doorbell. Google points to a professional or certified electrician to check the voltage and replace the transformer.
Safety first
Stop and check this first
- The doorbell transformer is connected to mains power. Don't open the consumer unit or the transformer box: Google points to a professional or certified electrician.
- While the light is yellow the doorbell sends no video or alerts: don't rely on it to watch the door until it is fixed.
Safe checks you can perform
- Blink pattern and when it appears
- What still works
- Transformer details for the electrician
Leave these tasks to a qualified professional
- Do not attempt this professional task: Replace the doorbell transformer
- Do not attempt this professional task: Check the chime wiring
- Do not attempt this professional task: Measure the doorbell voltage
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.
Replace the doorbell transformer
What they doIf the measurement confirms it, the electrician fits a suitable transformer; for 2nd and 3rd gen, Google cites 16-24 V AC and 10-40 VA.
They must show youthe new transformer with its rating plate and the doorbell on solid green.
In writingthe reference and rating of the transformer fitted, the reason for the change and a video and alerts test.
Check the chime wiring
What they doIf the transformer is right and the light remains, the electrician checks the wiring to the chime and its connections.
They must show youthe connections checked and the voltage measured again at the doorbell.
In writingwhich connection was corrected and the final measurement.
Measure the doorbell voltage
What they doA certified electrician measures with a multimeter the voltage reaching the Nest Doorbell and the transformer output, with the installation made safe.
They must show youthe voltage measured at the doorbell and transformer against what Google states for your model.
In writingvoltages measured, where they were measured and the conclusion.
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.
Blink pattern and when it appears
- Who:
- you, looking at the doorbell without touching wires.
- How:
- watch whether the yellow blinks continuously in normal use, only five times during setup, or four times while you hold the reset button.
- Result that matters:
- whether the pattern matches low power.
- If it blinks continuously in normal use:
- that is the insufficient power warning Google describes.
- If it was five blinks in setup or four while resetting:
- not a power issue; check setup in the app.
- Evidence to keep:
- short video of the blinking and note the Nest Doorbell model.
Evidence: Nest camera and doorbell lights and sounds
What still works
- Who:
- you.
- How:
- press the doorbell button and check whether the indoor chime rings, and whether the app shows video and alerts.
- Result that matters:
- whether it works as a regular doorbell but without video or alerts.
- If it rings but no video or alerts:
- matches what Google describes for low power.
- If nothing rings and the light is off:
- the doorbell has no power; that is also electrician work.
- Evidence to keep:
- dated note of what works and what doesn't.
Evidence: Nest camera and doorbell lights and sounds · Blinking yellow light on Nest Doorbell wired
Transformer details for the electrician
- Who:
- you, without opening the consumer unit or the transformer box.
- How:
- gather the Nest Doorbell model and generation and, if the electrician or home documentation shows it, the current transformer rating.
- Result that matters:
- information to compare with what Google asks for.
- If the transformer falls short of 16-24 V AC and 10-40 VA (2nd and 3rd gen):
- the electrician will consider replacing it.
- If you don't know the rating:
- the electrician will measure it.
- Evidence to keep:
- photo of the doorbell model and any installation documents.
Evidence: Nest camera and doorbell lights and sounds · Blinking yellow light on Nest Doorbell wired
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
- Networks
- Brand
- Google Nest
- Product type
- Smart doorbells
Known code variants
- Nest Doorbell blinking yellow
- Nest Doorbell con cable luz amarilla
- Nest doorbell flashing yellow
- Nest Doorbell insufficient power
- Nest Doorbell luz amarilla
- Nest Doorbell parpadea amarillo
- Nest Doorbell potencia insuficiente
- Nest Doorbell wired yellow light
- Nest Doorbell yellow light
- Nest Hello luz amarilla
- Nest Hello yellow light
- timbre Nest luz amarilla intermitente
What it means
Google says a blinking yellow light on Nest Doorbell (wired), 2nd gen and 3rd gen means the doorbell isn't getting enough power. For the 2nd and 3rd gen, Google cites a transformer rated 16-24 V AC, 10-40 VA; for the original wired model, not enough electric current and a need to check the voltage. The transformer feeds the chime wires. The light doesn't say whether the transformer, the wiring or the chime is at fault, and it doesn't prove the Nest Doorbell is faulty.
Warnings and stop conditions
- Higheditorial warning
The doorbell transformer is connected to mains power. Don't open the consumer unit or the transformer box: Google points to a professional or certified electrician.
Evidence: Blinking yellow light on Nest Doorbell wired
- Mediumsource verified
While the light is yellow the doorbell sends no video or alerts: don't rely on it to watch the door until it is fixed.
Evidence: Blinking yellow light on Nest Doorbell wired
Symptoms and causes
Probable causes · in order
- Doorbell transformer without enough powerCommon
Google says the transformer the chime wires connect to may need upgrading. For 2nd and 3rd gen it cites 16-24 V AC and 10-40 VA.
Evidence: Nest camera and doorbell lights and sounds · Blinking yellow light on Nest Doorbell wired
- Low voltage in the doorbell circuitPossible
For the original Nest Doorbell (wired), Google mentions insufficient current and asks for the voltage to be checked. Only an electrician measures it.
Evidence: Nest camera and doorbell lights and sounds
- Confusion with another yellow patternPossible
On the original model, five yellow blinks during setup mean connection trouble, not power; on 2nd and 3rd gen, four blinks are the factory reset countdown.
Evidence: Nest camera and doorbell lights and sounds
Virtual technician
Does AMARILLO-INTERMITENTE 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
Nest camera and doorbell lights and sounds
Google · 2026 · official_doc
- 2
Blinking yellow light on Nest Doorbell wired
Google · 2026 · official_doc
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