- HVAC
- Pellet stoves
DEPR ALARM
Extraflame DEPR ALARM on pellet stove: depression alarm
Risk level
High
Professional inspection is recommended.
Urgency
Immediate
Quick answer
The DEPR ALARM message (also shown as DEPRESSION ALARM or AL DEPR) on an Extraflame pellet stove means negative pressure in the firebox or pressurised hopper dropped below the safety threshold. Wait for the fumes motor to stop and 15 minutes to pass before resetting.
Safety first
Stop and check this first
- Never bypass, disconnect, or modify the mechanical pressure switch (E) or its vacuum detection tube (g), and never operate the stove without the burn pot in place or with damaged door or hopper gaskets.
- When topping up pellets while the stove is running, never leave the pressurised hopper lid or fire door open for more than 60 seconds, or the stove will trigger CLOSE HOPPER - STOVE DOOR followed by DEPR ALARM.
- Always wait until the stove is completely cold and unplug the power cord from the mains socket before removing the ash drawer or cleaning the burn pot.
Safe checks you can perform
- Verify hermetic closure of the fire door, ash drawer, and pellet hopper lid
- Wait for the fumes motor to stop and 15 minutes to pass before holding key 1
- Empty the ash drawer and clean the burn pot with the stove cold and unplugged
Leave these tasks to a qualified professional
- Do not attempt this professional task: Inspection and cleaning of the fumes exhaust pipe, T-fitting, and combustion chamber
- Do not attempt this professional task: Cleaning of the vacuum detection tube (g), air intake, and pressure switch hose (E)
- Do not attempt this professional task: Inspection and replacement of hermetic gaskets (B) and mechanical pressure switch (E) test
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.
Inspection and cleaning of the fumes exhaust pipe, T-fitting, and combustion chamber
What they doA qualified technician or Extraflame Authorised Technical Assistance Centre inspects and cleans the fumes exhaust pipe, T-fitting inspection cap, combustion chamber, and heat exchanger passages.
They must show youthe soot and fly ash removed from the fumes exhaust duct and T-fitting inspection cap.
In writingthe flue pipe and combustion chamber cleaning performed after DEPR ALARM.
Cleaning of the vacuum detection tube (g), air intake, and pressure switch hose (E)
What they doThe authorised Extraflame technician removes and cleans the pressure switch hose connection and the vacuum detection tube (g) inside the ash drawer compartment, and checks that the combustion air intake pipe is unobstructed.
They must show youthe cleared vacuum detection tube (g) and pressure switch hose connection free of ash blockages.
In writingthe vacuum sensing channel cleaning and air intake inspection completed.
Inspection and replacement of hermetic gaskets (B) and mechanical pressure switch (E) test
What they doIf cleaning the flue and vacuum sensing tube does not clear DEPR ALARM, an Extraflame authorised technician inspects the sealing gaskets (B) on the door, hopper lid, ash drawer, and burn pot flange and tests the mechanical pressure switch (E), fitting original spare parts as needed.
They must show youany worn gaskets removed or the pressure and continuity test on the mechanical pressure switch (E).
In writingthe hermetic seal verification and any original Extraflame gaskets or pressure switch replaced.
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.
Verify hermetic closure of the fire door, ash drawer, and pellet hopper lid
- Who:
- you, inspecting the exterior closures of your Extraflame pellet stove.
- How:
- check that the fire door, the ash drawer, and the pressurised pellet hopper lid are closed tightly and that no pellet granules or ash deposits are sitting on the perimeter gaskets.
- Result that matters:
- restore the airtight seal of the combustion chamber and pressurised fuel tank.
- If the hopper lid or door was ajar and closing it tightly clears the issue after resetting:
- resolved.
- If all closures are tight but the alarm persists:
- wait for full cool-down and clean the cold burn pot.
- Evidence to keep:
- seating condition of the pellet hopper lid, fire door, and ash drawer.
Evidence: Extraflame Pellet Stoves User Manual AMIKA (004281463 - Rev 000) · Extraflame Pellet Stoves User Manual Dorina, Giusy, Giusy Plus, Ketty, Serafina, Viviana, Viviana Plus (004276516_002) · Pellet products FAQ | La Nordica-Extraflame
Wait for the fumes motor to stop and 15 minutes to pass before holding key 1
- Who:
- you, at the stove control panel once cool-down has completed.
- How:
- to reset DEPR ALARM (DEPRESSION ALARM), always wait until the fumes extractor motor stops completely and at least 15 minutes have elapsed since the alarm appeared, then press and hold key 1 (ON/OFF) for 3 seconds.
- Result that matters:
- clear the alarm lockout following the mandatory procedure in the user manual.
- If the alarm clears after 15 minutes and the display returns to OFF:
- clean the cold burn pot before restarting.
- If DEPR ALARM returns on the next start after user cleaning:
- do not keep restarting it and call an Extraflame authorised technician.
- Evidence to keep:
- display returning to OFF after holding key 1 for 3 seconds.
Evidence: Extraflame Pellet Stoves User Manual AMIKA (004281463 - Rev 000) · Extraflame Pellet Stoves User Manual Dorina, Giusy, Giusy Plus, Ketty, Serafina, Viviana, Viviana Plus (004276516_002) · Pellet products FAQ | La Nordica-Extraflame
Empty the ash drawer and clean the burn pot with the stove cold and unplugged
- Who:
- you, with the stove completely cold and the power cord unplugged from the mains socket.
- How:
- pull out and empty the ash drawer, lift out the burn pot, clear all its bottom holes with the supplied poker, vacuum the burn pot housing, and push the burn pot back against the fire wall.
- Result that matters:
- remove ash blockages that reduce negative pressure inside the firebox.
- If the burn pot or ash drawer was packed with ash and cleaning it restores normal operation:
- resolved.
- If the burn pot and ash drawer are clean but DEPR ALARM recurs:
- book professional flue and vacuum channel cleaning.
- Evidence to keep:
- photo of the cleaned burn pot pushed against the fire wall and emptied ash drawer.
Evidence: Extraflame Pellet Stoves User Manual AMIKA (004281463 - Rev 000) · Extraflame Pellet Stoves User Manual Dorina, Giusy, Giusy Plus, Ketty, Serafina, Viviana, Viviana Plus (004276516_002) · Pellet products FAQ | La Nordica-Extraflame
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
- Extraflame
- Product type
- Pellet stoves
Known code variants
- AL DEPR
- ALARMA DEPRESION
- CERRAR TANQUE PUERTA
- CLOSE HOPPER - STOVE DOOR
- DEPR ALARM
- DEPRESSION ALARM
What it means
According to the Extraflame AMIKA Pellet Stove User Manual (004281463 - Rev 000) and the 596-series User Manual for Dorina, Giusy, Giusy Plus, Ketty, Serafina, Viviana, and Viviana Plus (004276516_002), DEPR ALARM (or DEPRESSION ALARM, AL DEPR in Spanish) means the mechanical pressure switch (E) detected insufficient depression. On hermetically sealed models such as AMIKA, leaving the fire door or pressurised hopper lid open during ignition first displays CLOSE HOPPER - STOVE DOOR and triggers DEPR ALARM after 60 seconds. Other Extraflame stove series may differ in display wording. The code alone never proves the pressure switch is faulty.
Warnings and stop conditions
- Highsource verified
Never bypass, disconnect, or modify the mechanical pressure switch (E) or its vacuum detection tube (g), and never operate the stove without the burn pot in place or with damaged door or hopper gaskets.
Evidence: Extraflame Pellet Stoves User Manual AMIKA (004281463 - Rev 000) · Extraflame Pellet Stoves User Manual Dorina, Giusy, Giusy Plus, Ketty, Serafina, Viviana, Viviana Plus (004276516_002) · Pellet products FAQ | La Nordica-Extraflame
- Mediumsource verified
When topping up pellets while the stove is running, never leave the pressurised hopper lid or fire door open for more than 60 seconds, or the stove will trigger CLOSE HOPPER - STOVE DOOR followed by DEPR ALARM.
Evidence: Extraflame Pellet Stoves User Manual AMIKA (004281463 - Rev 000) · Extraflame Pellet Stoves User Manual Dorina, Giusy, Giusy Plus, Ketty, Serafina, Viviana, Viviana Plus (004276516_002) · Pellet products FAQ | La Nordica-Extraflame
- Mediumsource verified
Always wait until the stove is completely cold and unplug the power cord from the mains socket before removing the ash drawer or cleaning the burn pot.
Evidence: Extraflame Pellet Stoves User Manual AMIKA (004281463 - Rev 000) · Extraflame Pellet Stoves User Manual Dorina, Giusy, Giusy Plus, Ketty, Serafina, Viviana, Viviana Plus (004276516_002) · Pellet products FAQ | La Nordica-Extraflame
Symptoms and causes
Probable causes · in order
- Fire door, ash drawer, or pressurised hopper lid not closed hermeticallyCommon
The fire door, ash drawer, or pressurised pellet hopper lid is not closed hermetically, stayed open for more than 60 seconds during ignition, or has pellet crumbs on the sealing gasket.
Evidence: Extraflame Pellet Stoves User Manual AMIKA (004281463 - Rev 000) · Extraflame Pellet Stoves User Manual Dorina, Giusy, Giusy Plus, Ketty, Serafina, Viviana, Viviana Plus (004276516_002) · Pellet products FAQ | La Nordica-Extraflame
- Dirty burn pot, combustion chamber, or vacuum detection tube (g)Possible
The burn pot or combustion chamber is fouled with ash and deposits, or the vacuum detection channel (g) located inside the ash drawer compartment is clogged.
Evidence: Extraflame Pellet Stoves User Manual AMIKA (004281463 - Rev 000) · Extraflame Pellet Stoves User Manual Dorina, Giusy, Giusy Plus, Ketty, Serafina, Viviana, Viviana Plus (004276516_002) · Pellet products FAQ | La Nordica-Extraflame
- Obstructed fumes exhaust pipe or combustion air intake ductPossible
The fumes exhaust pipe, T-fitting inspection cap, or combustion air intake pipe is blocked by soot, ash, or foreign bodies, or is experiencing back-pressure from adverse wind.
Evidence: Extraflame Pellet Stoves User Manual AMIKA (004281463 - Rev 000) · Extraflame Pellet Stoves User Manual Dorina, Giusy, Giusy Plus, Ketty, Serafina, Viviana, Viviana Plus (004276516_002) · Pellet products FAQ | La Nordica-Extraflame
- Worn sealing gaskets (B) or mechanical pressure switch (E) issueLess common
The hermetic gaskets (B) on the fire door, pellet hopper lid, ash drawer, or burn pot flange are worn, or the silicone sensing tube and mechanical pressure switch (E) require service.
Evidence: Extraflame Pellet Stoves User Manual AMIKA (004281463 - Rev 000) · Extraflame Pellet Stoves User Manual Dorina, Giusy, Giusy Plus, Ketty, Serafina, Viviana, Viviana Plus (004276516_002) · Pellet products FAQ | La Nordica-Extraflame
Virtual technician
Does DEPR 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
Extraflame Pellet Stoves User Manual AMIKA (004281463 - Rev 000)
La Nordica-Extraflame · 2026 · official_doc
- 2
Extraflame Manual del Usuario Estufas de Pellet AMIKA (004281463 - Rev 000)
La Nordica-Extraflame · 2026 · official_doc
- 3
La Nordica-Extraflame · 2026 · official_doc
- 4
La Nordica-Extraflame · 2026 · official_doc
- 5
Pellet products FAQ | La Nordica-Extraflame
La Nordica-Extraflame · 2026 · official_doc
- 6
Productos de pellets FAQ | La Nordica-Extraflame
La Nordica-Extraflame · 2026 · official_doc
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