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.
Mon–Sat, 8am–8pm
- Control board and communication
- Freezer control board and alarm repair
- Source: Sub-Zero
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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 freezerKind of codeControl 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 toFreezer 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 asFreezer 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.
MakeSub-Zero
Sub-Zero freezers repaired in the home, with the food kept shut in while the cause is found.
SourceSub-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.
Turn the home circuit breaker off for 30 seconds and back on to restart both boards.
Once it restarts, check that the panel responds and shows a normal freezer temperature.
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. 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
Freezer Error Code
7 causes, cheapest first
Where 90 5 80 usually leads
Freezer 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 repairMore Sub-Zero codes
Control board and communication on other makes
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.
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
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.
All service areasTampa BayFL · 31 areas
Miami / South FloridaFL · 47 areas
New York MetroNY · 75 areas
HoustonTX · 36 areas
ChicagoIL · 50 areas
Los AngelesCA · 95 areas
San DiegoCA · 31 areas
Questions
about 90 5 80.
Can I clear 90 5 80 myself?
What is the UIM in a Sub-Zero Designer column?
Will my Sub-Zero freezer thaw because of 90 5 80?
What can cause 90 5 80 besides a failed board?
Back to your everyday
Still showing 90 5 80?
Book with the code or the alarm pattern written exactly as the freezer shows it, the full model number, and whether the food is still frozen hard — when there is a code, that is where the diagnosis starts.