--- title: "Sub-Zero 90 5 80 flashing: the control has lost its display module" description: "What 90 5 80 means on Sub-Zero 90 5 80 flashing: the control has lost its display modules, what to check before booking, and when it is not a failure at all." url: "https://freezerrepair.center/error-codes/sub-zero-90-5-80/" --- # Sub-Zero 90 5 80 flashing: the control has lost its display module Sub-Zero describes 90 5 80 as no UIM communication, meaning the main control board no longer hears from the user interface module, the touch panel you use to set temperatures. ## What 90 5 80 actually means. Sub-Zero describes 90 5 80 as no UIM communication, meaning the main control board no longer hears from the user interface module, the touch panel you use to set temperatures. The unit may keep cooling, but settings and alerts cannot pass between the two. Sub-Zero freezer display What to do when 90 5 80 shows on the freezer ### Kind of code Control board and communication The boards that run the freezer stopped talking to each other, or one of them failed: the main control lost the display panel, or a board reported a problem of its own. A connector loosened by a move and a harness damp from condensation are checked before a board is ordered by model number. Built-in columns and undercounter freezers lean on their electronics more than a basic chest freezer does. ### Usually leads to Freezer control board and alarm repair Repairing the electronic control, display, door switch and sensors that run a modern freezer, including a temperature alarm that sounds without reason or never sounds at all. ### Shows up as Freezer Error Code A freezer error code appears on the display: letters and digits, a flashing temperature, or a warning symbol, sometimes with an alarm and sometimes with the freezer still running. ### Make Sub-Zero Sub-Zero freezers repaired in the home, with the food kept shut in while the cause is found. ### Source Sub-Zero answer: Designer Series error 90 5 80 Designer models (shown flashing as 90 5 80). ## Before you book, in this order. Each step comes from Sub-Zero's own guidance for 90 5 80 on its freezers. Follow it to the end: the last card says whether this is a visit. 01 Turn the home circuit breaker off for 30 seconds and back on to restart both boards. 02 Once it restarts, check that the panel responds and shows a normal freezer temperature. 03 Book a visit if 90 5 80 keeps flashing, and put a thermometer in the freezer until then. ### Still there? It usually turns into [freezer control board and alarm repair](https://freezerrepair.center/services/control-board-and-alarm-repair/). Book with the code and the model number. ### What not to do 90 5 80 does not mean the freezer has stopped cooling. The Sub-Zero code for the high-voltage control losing contact is 90 H 80. ## What you may notice with it. The freezer problems 90 5 80 tends to arrive with. Answer these at the freezer before anyone is booked. [All problems](https://freezerrepair.center/problems/) Before you call ### [Freezer Error Code](https://freezerrepair.center/problems/freezer-error-code/) [All 7 causes, cheapest first](https://freezerrepair.center/problems/freezer-error-code/) It also comes with - [**Freezer Won't Turn On**](https://freezerrepair.center/problems/freezer-not-turning-on/) - [**Freezer Alarm Beeping**](https://freezerrepair.center/problems/freezer-alarm-beeping/) Problem ### Freezer Error Code 7 causes, cheapest first Where 90 5 80 usually leads ## Freezer control board and alarm repair. **Control board, display, door switch or alarm · moderate to highest.** Book a visit [What the job involves](https://freezerrepair.center/services/control-board-and-alarm-repair/) ## Sub-Zero freezers. Sub-Zero freezers repaired in the home, with the food kept shut in while the cause is found. [Sub-Zero freezer repair](https://freezerrepair.center/brands/sub-zero/) More Sub-Zero codes [EC07](https://freezerrepair.center/error-codes/sub-zero-ec07/) [EC08](https://freezerrepair.center/error-codes/sub-zero-ec08/) [EC40](https://freezerrepair.center/error-codes/sub-zero-ec40/) [21](https://freezerrepair.center/error-codes/sub-zero-21/) [22](https://freezerrepair.center/error-codes/sub-zero-22/) [24](https://freezerrepair.center/error-codes/sub-zero-24/) [20 4 50](https://freezerrepair.center/error-codes/sub-zero-20-4-50/) [95 1 00](https://freezerrepair.center/error-codes/sub-zero-95-1-00/) [35 C 00](https://freezerrepair.center/error-codes/sub-zero-35-c-00/) Control board and communication on other makes [Bertazzoni Error Code...](https://freezerrepair.center/error-codes/bertazzoni-error-code/) [Bosch Self-test result](https://freezerrepair.center/error-codes/bosch-self-test/) [Fisher & Paykel F1](https://freezerrepair.center/error-codes/fisher-and-paykel-f1/) [Fulgor Milano Error Code...](https://freezerrepair.center/error-codes/fulgor-milano-error-code/) [Gaggenau E..](https://freezerrepair.center/error-codes/gaggenau-e/) [GE Green light blinking](https://freezerrepair.center/error-codes/ge-green-light-blinking/) [Liebherr Error](https://freezerrepair.center/error-codes/liebherr-error/) [Miele F](https://freezerrepair.center/error-codes/miele-f-message/) [All 13 codes of this kind](https://freezerrepair.center/error-codes/#family-board) Sub-Zero builds this ### Freezer column A built-in, full-height freezer that stands alone in the cabinetry, often beside a matching fresh-food column, with a stainless or panel-ready door and an electronic control. Sub-Zero builds this ### Undercounter freezer A 15- to 24-inch freezer or a pair of freezer drawers built in under a counter, in a kitchen island, a home bar, a basement or a pool house, venting from the front. ## In Sub-Zero's own words > No UIM Communications [Sub-Zero answer: Designer Series error 90 5 80](https://www.subzero-wolf.com/assistance/answers/sub-zero/designer/integrated-series-error-code-90-5-80) [Sub-Zero answer: Designer Series error 90 5 80](https://www.subzero-wolf.com/assistance/answers/sub-zero/designer/integrated-series-error-code-90-5-80) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Designer models (shown flashing as 90 5 80). ## Sub-Zero 90 5 80 freezer repair, where we come out. The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered. 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Turn the home circuit breaker off for 30 seconds and back on to restart both boards. If it comes back, it needs a visit. ### What is the UIM in a Sub-Zero Designer column? It is the user interface module, the control panel with the display and touch keys. The main board does the cooling work, and the UIM passes your settings to it. ### Will my Sub-Zero freezer thaw because of 90 5 80? Not directly, since the code is about communication. Watch the temperature with a thermometer, because you may not see normal warnings while the link is down. ### What can cause 90 5 80 besides a failed board? A loose or damaged cable between the panel and the main control, or a brief power disturbance, can also cause it. That is why the breaker reset comes first. --- **[Read on the site: Sub-Zero 90 5 80 flashing: the control has lost its display module](https://freezerrepair.center/error-codes/sub-zero-90-5-80/)** **[Book a visit with FreezerRepair.center](https://freezerrepair.center/schedule/)**