--- title: "Refrigeration alarm sounding" description: "Thermador refrigeration alarm sounding — a column beeping with the alarm symbol lit, or a door signal that will not clear." url: "https://thermadormiami.support/symptoms/refrigerator-alarm-sounding/" date_modified: "2026-08-18" Appliance type: "Built-in refrigerators & columns, Freezer columns, Wine reserves" --- # Refrigeration alarm sounding Symptom # Thermador refrigeration alarm sounding A column beeping with the alarm symbol lit, or a door signal that will not clear. Each alarm means something specific, and one of them is holding a number you will want before you silence it. - **From $95** diagnostic, credited to the repair - **59** cities and neighborhoods covered - **OEM** parts available on order - **In writing** the price, before anything is opened ## Book a diagnostic visit Your model number and a line about what it is doing is enough to get started. Your details stay private. No spam, ever. Five ordinary causes ## What this usually turns out to be Cheapest and commonest first, which is also the order we check them in. They sit hundreds of dollars apart, and only the unit settles which one is yours. - A power cut while you were out The temperature alarm is doing exactly its job. Press ALARM and read the highest temperature reached — that tells you about the food, which is the actual question. ### A power cut while you were out The temperature alarm is doing exactly its job. Press ALARM and read the highest temperature reached — that tells you about the food, which is the actual question. - A large warm load put in at once A full shop in a Miami summer will alarm a healthy column. It clears as the cabinet pulls back down. ### A large warm load put in at once A full shop in a Miami summer will alarm a healthy column. It clears as the cabinet pulls back down. - A door not sealing The door alarm on a door that looks shut is usually right: a panelled door that has settled, or a seal that has hardened at the corners. [ Refrigerator door and gasket repair from $220 ](https://thermadormiami.support/services/refrigerator-door-and-gasket-repair/) ### A door not sealing The door alarm on a door that looks shut is usually right: a panelled door that has settled, or a seal that has hardened at the corners. - A sensor reporting An error message with the alarm symbol is the cabinet asking to be self-tested rather than naming a part. The self-test is documented and you can run it. [ Diagnostic visit from $95 ](https://thermadormiami.support/services/diagnostic-visit/) ### A sensor reporting An error message with the alarm symbol is the cabinet asking to be self-tested rather than naming a part. The self-test is documented and you can run it. - Low supply voltage The display simply goes out and no button responds. It clears when the voltage returns, and in storm season here that is a real cause rather than a curiosity. ### Low supply voltage The display simply goes out and no button responds. It clears when the voltage returns, and in storm season here that is a real cause rather than a curiosity. In five minutes ## Before you call anybody None of it needs tools, and all of it makes the visit shorter. - 01 Press ALARM before anything else The signal stops and the highest temperature reached shows for a few seconds. It shows once. Read it. ### Press ALARM before anything else The signal stops and the highest temperature reached shows for a few seconds. It shows once. Read it. - 02 Decide which alarm it is Temperature, door, sensor message or a dark display. They look different and they mean entirely different things. ### Decide which alarm it is Temperature, door, sensor message or a dark display. They look different and they mean entirely different things. - 03 Close and reseal the door The door display should go out immediately. If it does not, the seal or the alignment is the next thing to look at. ### Close and reseal the door The door display should go out immediately. If it does not, the seal or the alignment is the next thing to look at. - 04 Run the self-test for a sensor message Off, five minutes, on with the door closed, SETUP and ALARM OFF held for five seconds. ### Run the self-test for a sensor message Off, five minutes, on with the door closed, SETUP and ALARM OFF held for five seconds. How it shows up ## What people describe when they call - “Temperature flashing with an alarm symbol” - “A continuous tone with the door signal” - “An alarm that returns after being cleared” A shortcut ## Narrow it down before anybody arrives A description of the behaviour leaves a few possible causes. A code names the subsystem before anybody opens anything, which is why it is worth photographing before it clears. If the display is showing something - [ Temperature alarm Temperature alarm ](https://thermadormiami.support/error-codes/signal-temperature-alarm-refrigeration/) - [ Door alarm Door alarm ](https://thermadormiami.support/error-codes/signal-door-alarm-refrigeration/) - [ Sensor error message Sensor error ](https://thermadormiami.support/error-codes/signal-sensor-error-refrigeration/) - [ Display goes dark Low supply voltage ](https://thermadormiami.support/error-codes/signal-low-voltage-refrigeration/) Photograph it before it clears — codes do not wait. [ Search the full code list ](https://thermadormiami.support/error-codes/) In more detail ## About Thermador refrigeration alarm sounding ### On this make, the alarm is what a code would be Four things this cabinet can tell you and they are not interchangeable: a temperature alarm, a door alarm, a sensor error message asking for a self-test, and a display that goes dark on low supply voltage. Which one you have decides everything that follows. ### Four signals, four meanings - **Temperature alarm** — the cabinet has been warmer than its setting. Pressing ALARM shows the highest temperature it reached - **Door alarm** — the door is open, held open, or closed without sealing - **Sensor error message** — the column is asking to be self-tested rather than naming a part - **Display dark** — supply voltage below the minimum. Not a failure, and it returns by itself ### Why this stands in for an error code Thermador publishes error codes for its cooking and dishwashing and none at all for its refrigeration. So on a column, these alarms are the diagnostic information the appliance offers, and they are worth knowing properly rather than silencing. The highest-temperature reading in particular is shown once and then forgotten by the cabinet. This article is based on: - Official manufacturer documentation - Internal repair procedures - Technician repair history - Company quality standards Before you book ## Questions about thermador refrigeration alarm sounding You can, and the signal volume is adjustable in the settings. Do read the highest temperature first, though — that number is the only thing here that tells you whether the food was ever at risk, and it is not shown again. Then something is still true. A temperature alarm that returns means the cabinet is not holding; a door alarm that returns on a closed door means it is closed but not sealed. That is the low-voltage warning rather than a dead appliance. It comes back on its own when the supply recovers. If it persists on a circuit that is otherwise healthy, then it is worth a call. 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