- Appliances
- Refrigerators
Alarm
Mabe Alarm on refrigerator: open door audible alert
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Medium
Quick answer
A flashing Alarm LED with an audible buzzer on a Mabe Sirius refrigerator warns that a door has been open for more than 1 minute. Close both doors firmly or press the Alarm button to silence it, and check that overfilled drawers or the 48 mm front tilt do not block the seal.
Safety first
Stop and check this first
- Always unplug the refrigerator by grasping the plug body (never pulling the cord) before any inspection or cleaning: do not damage the refrigeration circuit (charged with 103 g of R-134a), never use mechanical or electrical devices to speed up defrosting, and leave LED light replacement to authorized service.
- For your safety, never use an extension cord, do not plug other appliances into the same outlet and never remove the ground pin or use adapters; if voltage fluctuates in your area, the Sirius manual recommends a 500 W to 1000 W voltage regulator.
Safe checks you can perform
- Close the door properly or silence the buzzer with the Alarm button
- Rearrange food in drawers and shelves without blocking air vents
- Set the front leveling screws to 48 mm and watch for 4 flashes
Leave these tasks to a qualified professional
- Do not attempt this professional task: Display self-diagnostic mode (F1 to F5) and door circuit inspection
- Do not attempt this professional task: FF and evaporator thermistor test at connector CON2 after 4 flashes
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.
Display self-diagnostic mode (F1 to F5) and door circuit inspection
What they doThe technician enters field diagnostic mode by holding Fridge Temp. + Alarm + Power Cool (or Temp. Refrig. + Alarma + Extra Cool) for 5 seconds (auto-exiting after 30 seconds or 3 minutes of inactivity depending on version) to run the 11-LED sweep (F1), the 15-second button read test (F2) and inspect the FF and FZ open-door detection circuit.
They must show youthe 11-LED sweep in test F1 and the Alarm button response during test F2.
In writingthe results of diagnostic tests F1 and F2, the condition of the FF and FZ door sensor circuit and any hinge adjustments.
FF and evaporator thermistor test at connector CON2 after 4 flashes
What they doIf the level, Energy Saver, Alarm and Lock LEDs flashed 4 times at power-up, the technician unplugs the unit, measures the FF and evaporator thermistors at main-board connector CON2 with a multimeter (EPCOS M2020 series, 5K ohms at 25 °C +/- 2%) and runs load test F4 and display forced defrost F5.
They must show youthe resistance reading at connector CON2 compared against the 5K-ohm at 25 °C thermistor table.
In writingwhich thermistor was open or shorted, the genuine replacement part installed and the service warranty details.
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.
Close the door properly or silence the buzzer with the Alarm button
- Who:
- you, at the external display on the fresh-food door.
- How:
- push both the fresh-food door and the freezer door completely shut; the buzzer stops as soon as the door seals. To silence it from the external control, press the Alarm button until the indicator turns off (Alarm can be toggled even when the 3-second Lock function is active, and it automatically re-enables 10 minutes after deactivation once the doors are closed).
- Result that matters:
- the audible buzzer stopping and the Alarm LED on the display no longer flashing.
- If closing the door silences the alert right away:
- the door had simply stayed open past 1 minute.
- If the door does not seal or starts beeping again:
- inspect the drawers, food packages and air vents inside.
- Evidence to keep:
- a note of which door was ajar and whether pressing the Alarm button turns off the alert.
Evidence: Mabe Ingenieria de Servicio - Manual de Servicio Refrigerador Sirius Bottom Freezer LATAM Rev. 0 (Diciembre 2016)
Rearrange food in drawers and shelves without blocking air vents
- Who:
- you.
- How:
- check whether any food package blocks the door from closing and remove or rearrange items if the fresh-food drawers or the 3 freezer drawers jam from being overfilled (observing the 10 kg limit on half shelves, 15 kg on full tempered-glass shelves and 8 kg on the Smart Station door). Keep all air vents clear, and if thermal vacuum makes the door hard to reopen right after closing, wait 10 to 15 seconds.
- Result that matters:
- smooth drawer travel and unobstructed closure on both doors.
- If an overfilled drawer or package was holding the door ajar:
- rearranging the load stops the alarm.
- If nothing blocks the interior yet the door will not swing shut on its own:
- check the front leveling screws.
- Evidence to keep:
- a photo of the interior showing clear drawer travel and unblocked air vents.
Evidence: Mabe Ingenieria de Servicio - Manual de Servicio Refrigerador Sirius Bottom Freezer LATAM Rev. 0 (Diciembre 2016)
Set the front leveling screws to 48 mm and watch for 4 flashes
- Who:
- you, with a second person if the leveling screws need adjustment.
- How:
- confirm that the refrigerator sits on a flat floor and that the doors swing shut on their own; if they need adjustment, have one person tilt the cabinet slightly backward while the other turns the front bottom leveling screws clockwise until there is approximately 48 mm (1.9 in) between the floor and the front edge. Also watch the display when power is restored to see whether the level, Energy Saver, Alarm and Lock LEDs flash 4 times.
- Result that matters:
- aligned doors that close cleanly on their own and confirmation of whether the 4-flash sensor alert appears.
- If setting the 48 mm front height lets the door close properly and stops the alarm:
- leveling was the cause.
- If the alarm sounds with the doors shut or the display flashes 4 times at power-up:
- request service from Mabe's authorized technician.
- Evidence to keep:
- a short video of the external display when closing the door or during the first 10 seconds after plugging in.
Evidence: Mabe Ingenieria de Servicio - Manual de Servicio Refrigerador Sirius Bottom Freezer LATAM Rev. 0 (Diciembre 2016)
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
- Appliances
- Brand
- Mabe
- Product type
- Refrigerators
Known code variants
- Alarm
- Alarma
- alarma puerta abierta refrigerador Mabe
- Door alarm
- Mabe Alarm
- Mabe door open alarm
- Mabe fridge beeping door open
- Mabe refrigerator Alarm
- Mabe Sirius Alarm light
- Mabe Sirius Alarm parpadea
- refrigerador Mabe emite una alarma
What it means
In the Mabe Sirius Bottom Freezer LATAM Rev. 0 Service Manual (520 liter / 19 cubic foot No Frost models, including the Aqua RMB1952BMX and Smart Station RMB1952WMX series and RMS1951WMXXA), the Alarm function flashes its indicator LED whenever a door is open and sounds an audible buzzer after 1 continuous minute with the door open. In addition, when power returns after an outage, 4 simultaneous flashes of the temperature level, Energy Saver, Alarm and Lock LEDs indicate a temperature sensor fault. Other models may differ, and the alarm alone never proves a switch, thermistor or board is faulty.
Warnings and stop conditions
- Higheditorial warning
Always unplug the refrigerator by grasping the plug body (never pulling the cord) before any inspection or cleaning: do not damage the refrigeration circuit (charged with 103 g of R-134a), never use mechanical or electrical devices to speed up defrosting, and leave LED light replacement to authorized service.
Evidence: Mabe Ingenieria de Servicio - Manual de Servicio Refrigerador Sirius Bottom Freezer LATAM Rev. 0 (Diciembre 2016)
- Mediumeditorial warning
For your safety, never use an extension cord, do not plug other appliances into the same outlet and never remove the ground pin or use adapters; if voltage fluctuates in your area, the Sirius manual recommends a 500 W to 1000 W voltage regulator.
Evidence: Mabe Ingenieria de Servicio - Manual de Servicio Refrigerador Sirius Bottom Freezer LATAM Rev. 0 (Diciembre 2016)
Symptoms and causes
Probable causes · in order
- Fresh-food or freezer door left open for more than 1 minuteCommon
The Sirius manual explains that when the Alarm function is active and either door remains open for 1 continuous minute, the indicator LED flashes and the buzzer sounds until the door is closed or Alarm is pressed.
Evidence: Mabe Ingenieria de Servicio - Manual de Servicio Refrigerador Sirius Bottom Freezer LATAM Rev. 0 (Diciembre 2016)
- Food packages or overfilled drawers keeping the door from closingCommon
The Sirius cause-and-solution chart advises checking whether a food package blocks door closure or whether overfilled drawers jam when closing, preventing a complete seal and keeping the open-door detection circuit active.
Evidence: Mabe Ingenieria de Servicio - Manual de Servicio Refrigerador Sirius Bottom Freezer LATAM Rev. 0 (Diciembre 2016)
- Front leveling screws not adjusted to the 48 mm (1.9 in) heightPossible
If a door will not close on its own or the doors look uneven, the Sirius manual notes that the front leveling screws need adjustment until there is approximately 48 mm (1.9 in) between the floor and the front edge.
Evidence: Mabe Ingenieria de Servicio - Manual de Servicio Refrigerador Sirius Bottom Freezer LATAM Rev. 0 (Diciembre 2016)
- Door sensor circuit fault or 4-flash thermistor alert at power-upLess common
If the alarm sounds with both doors shut, or if the level, Energy Saver, Alarm and Lock LEDs flash 4 times together when power is restored, the manual points to the FF/FZ door sensor circuit or a shorted or open FF or evaporator thermistor.
Evidence: Mabe Ingenieria de Servicio - Manual de Servicio Refrigerador Sirius Bottom Freezer LATAM Rev. 0 (Diciembre 2016)
Virtual technician
Does Alarm 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
Mabe Serviplus · 2016 · official_doc
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