- Robot vacuums
- Robot vacuum
Flashing red 4 beeps
Cecotec Conga flashing red light and 4 beeps: charging
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Medium
Quick answer
On the Cecotec Conga 2290 Ultra, 4 beeps while the oscillating red light is on signals low battery or a charging error. Check that the base indicator is lit, wipe the charging terminals with a dry cloth, and place the robot manually on the base.
Safety first
Stop and check this first
- Never open the Li-ion battery pack, charging base or power adapter, and do not touch cords, outlets or adapters with wet hands; if the battery overheats, swells, smells or leaks, stop using the robot immediately and contact Cecotec official support (if battery liquid contacts the eyes, flush with clean water for at least 10 minutes and seek medical attention).
- Always remove the mop before leaving the robot charging on the base, and disconnect the appliance from the power supply before removing or replacing the battery.
Safe checks you can perform
- Check the charging base indicator and the 2-metre and 1-metre clearance
- Wipe the charging terminals on the robot and base with a dry cloth
- Place the robot manually on the base and verify the beep and orange light
Leave these tasks to a qualified professional
- Do not attempt this professional task: Charging base and circuit inspection by Cecotec official Technical Support
- Do not attempt this professional task: Official 14.4 V Li-ion battery replacement or warranty 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.
Charging base and circuit inspection by Cecotec official Technical Support
What they doIf the charging base indicators are not lit or the Conga does not beep when placed onto clean charging terminals, Cecotec's official Technical Support Service inspects the base, adapter and robot.
They must show youvoltage output at the base charging terminals and the confirmation beep when the robot docks.
In writingthe diagnosis of the charging base or charging circuit and any parts repaired or replaced.
Official 14.4 V Li-ion battery replacement or warranty check
What they doWhen the 14.4 V 2600 mAh Li-ion battery no longer holds a charge or fails, Cecotec official support checks coverage under the 2-year warranty or fits an official replacement battery in the 2-screw underside compartment.
They must show youthe replacement battery installed with its label facing up and a full charge cycle to a steady blue light.
In writingwhether the replacement is covered under the 2-year warranty and the reference of the new battery.
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.
Check the charging base indicator and the 2-metre and 1-metre clearance
- Who:
- you, by the Conga charging base.
- How:
- verify that the charging base is plugged into a working wall outlet and that its charge indicator light is on. Make sure the base sits against a wall with a minimum free space of 2 metres in front and 1 metre on each side so obstacles do not stop the robot from docking before the battery runs out.
- Result that matters:
- confirming that the charging base has power and the unobstructed approach required by Cecotec.
- If objects were blocking the 2-metre front or 1-metre side clearance:
- clear the area and wipe the charging terminals next.
- If the charging base indicators do not light up on a live outlet:
- call Cecotec Technical Support (+34 963 210 728) to inspect the base.
- Evidence to keep:
- a photo of the charging base placement and its indicator light.
Evidence: Cecotec Conga 2290 Ultra: manual de instrucciones · Cecotec Conga 2299 Ultra Home X-Treme T: manual de instrucciones · Cecotec Conga 2499 Ultra X-Treme: manual de instrucciones
Wipe the charging terminals on the robot and base with a dry cloth
- Who:
- you, wiping the charging contacts with a dry cloth.
- How:
- use a clean, dry, soft cloth to wipe dust off the metallic charging terminals on both the charging base and the underside of the robot (on self-emptying base models like the Conga 2299, also wipe the infrared lens and charge indicator with a dry cloth once a month).
- Result that matters:
- clean, dry contact pads ready to transfer charging current.
- If dust or residue came off the terminals:
- place the robot manually on the base to test whether it beeps.
- If the terminals were already clean:
- check the underside power switch and manual docking next.
- Evidence to keep:
- a photo of the charging terminals on the robot and charging base.
Evidence: Cecotec Conga 1990 Connected: manual de instrucciones · Cecotec Conga 2290 Ultra: manual de instrucciones · Cecotec Conga 2299 Ultra Home X-Treme T: manual de instrucciones · Cecotec Conga 2499 Ultra X-Treme: manual de instrucciones
Place the robot manually on the base and verify the beep and orange light
- Who:
- you, seating the Conga on the base.
- How:
- make sure the main power switch on the bottom part of the robot is in the On position, place the Conga manually on the charging base matching the charging terminals on both units, and check that the robot beeps once and flashes orange while charging until the light turns steady blue at full charge.
- Result that matters:
- one confirmation beep on docking followed by an oscillating orange light that turns steady blue when fully charged.
- If it beeps once, flashes orange and reaches steady blue:
- the low-battery state is resolved.
- If the robot does not beep when placed on the charging base or repeats the 4 beeps with a flashing red light:
- contact Cecotec Technical Support for charging service.
- Evidence to keep:
- a short video placing the robot on the base showing whether it beeps and how the indicator light responds.
Evidence: Cecotec Conga 2290 Ultra: manual de instrucciones · Cecotec Conga 2299 Ultra Home X-Treme T: manual de instrucciones · Cecotec Conga 2499 Ultra X-Treme: manual de instrucciones
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
- Robot vacuums
- Brand
- Cecotec
- Product type
- Robot vacuum
Known code variants
- 4 beeps while the oscillating red light is on
- 4 pitidos mientras la luz roja parpadea
- Batería baja o error de carga Conga
- Cecotec Conga charging error 4 beeps
- Cecotec Conga error de carga 4 pitidos
- Conga 4 beeps flashing red light
- Conga 4 pitidos luz roja parpadeante
- Flashing red 4 beeps
- Low battery or charging error Conga
- Luz roja parpadeante 4 pitidos
- Oscillating red light 4 beeps
What it means
In the official Cecotec Conga 2290 Ultra instruction manual, the table for beeps while the oscillating red light is on assigns 4 beeps to low battery or charging error, stating that the robot has run out of battery and you need to manually place it on the charging base. Do not confuse this alert with 4 beeps and a steady red light (which signals a main-brush fault on the Conga 1990, 2290, 2299 and 2499, or a failure to return to the base on the 1990). This signal alone never proves that the 14.4 V 2600 mAh Li-ion battery or charging base is faulty: dusty charging terminals or blocked clearance around the base usually prevent charging.
Warnings and stop conditions
- Highsource verified
Never open the Li-ion battery pack, charging base or power adapter, and do not touch cords, outlets or adapters with wet hands; if the battery overheats, swells, smells or leaks, stop using the robot immediately and contact Cecotec official support (if battery liquid contacts the eyes, flush with clean water for at least 10 minutes and seek medical attention).
Evidence: Cecotec Conga 2290 Ultra: manual de instrucciones
- Lowsource verified
Always remove the mop before leaving the robot charging on the base, and disconnect the appliance from the power supply before removing or replacing the battery.
Evidence: Cecotec Conga 2290 Ultra: manual de instrucciones · Cecotec Conga 2499 Ultra X-Treme: manual de instrucciones
Symptoms and causes
Probable causes · in order
- Battery depleted away from the base due to blocked access or distanceCommon
If the charging base lacks 2 metres of clearance in front and 1 metre on each side or the robot is far away, the Conga can run out of battery before docking and must be placed on the base manually.
Evidence: Cecotec Conga 2290 Ultra: manual de instrucciones · Cecotec Conga 2299 Ultra Home X-Treme T: manual de instrucciones · Cecotec Conga 2499 Ultra X-Treme: manual de instrucciones
- Dirty charging terminals or underside power switch turned offPossible
The Conga 1990, 2290, 2299 and 2499 manuals instruct you to clean the charging terminals with a dry cloth, ensure the underside power switch is on, and check that the robot beeps on the base.
Evidence: Cecotec Conga 1990 Connected: manual de instrucciones · Cecotec Conga 2290 Ultra: manual de instrucciones · Cecotec Conga 2299 Ultra Home X-Treme T: manual de instrucciones · Cecotec Conga 2499 Ultra X-Treme: manual de instrucciones
- Unpowered charging base or worn-out battery packLess common
Cecotec instructs you to check whether the charging base indicators are on and to contact official Technical Support Service if they are off or if the robot does not beep when placed on the base.
Evidence: Cecotec Conga 2290 Ultra: manual de instrucciones · Cecotec Conga 2299 Ultra Home X-Treme T: manual de instrucciones · Cecotec Conga 2499 Ultra X-Treme: manual de instrucciones
Virtual technician
Does Flashing red 4 beeps 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
Cecotec Conga 1990 Connected: manual de instrucciones
Cecotec · 2026 · manual
- 2
Cecotec Conga 2290 Ultra: manual de instrucciones
Cecotec · 2026 · manual
- 3
Cecotec Conga 2299 Ultra Home X-Treme T: manual de instrucciones
Cecotec · 2026 · manual
- 4
Cecotec Conga 2499 Ultra X-Treme: manual de instrucciones
Cecotec · 2026 · manual
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