The short answer
Here is what the symptom means on a Black+Decker refrigerator: a display fault leaves the machine running correctly behind a panel that cannot show it. Confirm the cabinet is still cold before spending anything — a working refrigerator with a bad display is a cosmetic fault.
What you actually see
- The display shows a code and the cabinet still cools — A code with intact cooling is a sensor or a communication complaint, not a cooling failure.
- The display flickers or shows partial digits — Missing segments point at the display itself rather than at the logic behind it.
- Settings reset themselves overnight — A control that forgets is losing power briefly or is losing its stored state.
Causes, ranked for this refrigerator
- Loose or corroded connector at the board — Ranks first because vibration over years walks a connector loose, and moisture in a kitchen corrodes the pins, which produces intermittent nonsense rather than a clean failure. This is the entry most often blamed correctly and diagnosed carelessly, so take the extra minute.
- Power interruption left the control in a bad state — Second because it costs nothing to rule out and it resolves a large share of these complaints, so it has to come first regardless of how the fault looks. Confirm it before moving on, because the entries below read differently once it is ruled out.
- Membrane panel worn through — Third because the printed membrane behind the buttons wears at the two positions owners press most, so one or two dead buttons with the rest working is a membrane failure. Rule it in or out properly here; a maybe at this position costs an hour further down.
What to check, in order
- First — the harness connectors — Note whether the fault changes when the cabinet is moved or the door is slammed. Movement-sensitive faults are connections.
- Second — a power cycle — Unplug the unit for several minutes — long enough for the display to fully die — then plug it back in and watch the start-up sequence.
Checks an owner can do safely
- Step 1. Write down the exact code and when it appears — Note the characters shown, whether cooling continues, and what the machine was doing. That record is what shortens the service call.
Tools: pen and paperAbout 5 min
- Step 2. Power-cycle the unit properly — Unplug it, wait several minutes until the panel is fully dead, then plug it back in. A quick pull and push does not clear a stored state.
Tools: noneAbout 10 min
- Step 3. Compare the display against a thermometer — Leave a thermometer in a glass of water in the cabinet for several hours and compare. Agreement clears the sensor; disagreement convicts it.
Tools: fridge thermometer, glass of waterAbout 20 min
Before you open anything
Safety
Take the power away before the panel. Unplug the appliance or open its breaker; a capacitor can hold a charge after the power is off, so a dead-looking board is not a safe board. Work with dry hands on a dry floor and put the panel back before power goes on.
When this becomes a service call
The line is not about confidence, it is about what the next step needs. Call when the sensor reads correctly, the connectors are clean, the door switch works and a proper power cycle changes nothing — what is left is measured, not inspected.
Sources
General guidance- The Control of Hazardous Energy (Lockout/Tagout) — OSHA 1910.147 and manufacturer service manuals, fetched
Nearest pages
What this page does not cover
One limitation worth stating up front: this page is written for the Black+Decker refrigerator range rather than for your particular unit. It does not name families, model numbers or control revisions. Where a page exists that does, it is more precise than this one and it is linked under Related pages.
Related pages
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
