Cold Line Refrigeration Service — (904) 604-7755 # Refrigeration Repairs | Independent Service, FL Independent repair of built-in refrigerators, freezer columns, wine storage, ice makers, undercounter units and refrigerator drawers across Northeast Florida. Source: https://firstcoastsubzero.com/repairs/ --- Setpoints 38°F Fresh food 5°F Ice production 0°F Freezer Index · Six repair types # Refrigeration repairs Refrigeration only. Sub-Zero builds no ranges and no cooktops, so nothing on this site pretends otherwise. Every page below covers one class of cabinet and the faults it actually presents with. ![An open built-in refrigerator with hand tools laid out on a folded towel on the kitchen floor beside it.](https://firstcoastsubzero.com/img/subzero-repair-02.webp) Six kinds of call, one cabinet type. The tools on the towel are the same every time. 01 ## [Built-in refrigerator repair](https://firstcoastsubzero.com/repairs/built-in-refrigerator/) The fresh-food side runs its own compressor and its own evaporator, so a warm refrigerator sitting above a freezer that still holds 0°F is a specific fault with a short list of causes. Presenting symptoms - Fresh food compartment warm while the freezer still holds 0°F - Fresh food reading above 48°F against a 38°F setpoint - SERVICE indicator flashing with a service code on the display 02 ## [Freezer column repair](https://firstcoastsubzero.com/repairs/freezer-column/) A freezer column is a single-purpose cabinet with one sealed system and no fresh-food side to borrow air from, so frost, drain ice and defrost faults present differently than they do in an over-under unit. Presenting symptoms - Freezer running above 0°F while the paired refrigerator column is fine - Heavy frost on the rear evaporator cover or on packaged food - Ice sheet forming across the floor of the lower basket 03 ## [Wine storage repair](https://firstcoastsubzero.com/repairs/wine-storage/) Wine cabinets hold a narrow band far above freezing, so the failures that matter are drift, humidity and light rather than the frost and defrost problems that dominate food refrigeration. Presenting symptoms - Upper and lower zones converging on the same temperature - A zone reading several degrees above its setpoint - Condensation forming on the inside of the glass door 04 ## [Ice maker repair](https://firstcoastsubzero.com/repairs/ice-maker/) Ice production has a temperature floor, a fill volume and a harvest cycle, and the three of them fail in ways that look identical from the front of the cabinet and are not. Presenting symptoms - No ice at all while the freezer still reads close to 0°F - Cubes coming out thin, hollow or cloudy - Ice maker overfilling and freezing the mold into a solid block 05 ## [Undercounter refrigeration repair](https://firstcoastsubzero.com/repairs/undercounter/) Undercounter units live in the hottest, most airflow-restricted position in the kitchen, and most of their faults trace back to the grille, the drain or an ambient temperature the cabinet was never rated for. Presenting symptoms - Cabinet running warm in summer but recovering in cooler months - Compressor running continuously in an island or outdoor installation - Water pooling on the floor of the cabinet or on the kitchen floor 06 ## [Refrigerator drawer repair](https://firstcoastsubzero.com/repairs/refrigerator-drawers/) Drawer units carry their whole seal on a moving part, so alignment, runner wear and gasket compression cause more warm-drawer calls than any refrigeration component does. Presenting symptoms - One drawer holding temperature while the other runs warm - Drawer front standing proud of the cabinetry on one side - Drawer dragging, grinding or refusing to close the last inch How a visit runs ## Measured first, quoted second, ordered third. - Both compartments are read against both setpoints before anything is touched. - The condenser is located for that series and its restriction is assessed, not guessed. - Any stored service code is recorded as found. We do not clear codes before the diagnosis is complete. - The failing sealed system is identified before a single component is condemned. - A written estimate is handed over. Nothing is ordered and no work starts until it is approved. $80 flat diagnostic, credited toward the repair. Written estimate before any part is ordered or any work begins. Genuine OEM parts. No aftermarket substitutions on sealed-system or control components. Board fit is serial-dependent, so we do not publish control-board part numbers as definitive. The serial comes off the plate at the visit. EPA Section 608 certified technicians — the federal requirement to open a sealed refrigeration system. By series ## Which cabinet do you have? CL ### [Classic (CL)](https://firstcoastsubzero.com/models/classic/) Formerly Built-In. Condenser at the top. BI ### [Built-In (BI)](https://firstcoastsubzero.com/models/legacy-built-in/) Condenser at the top. DEC · DET · DEU ### [Designer (DEC / DET)](https://firstcoastsubzero.com/models/designer/) Formerly Integrated. Condenser at the bottom. IT · IC · ID · IW ### [Integrated (IT / IC)](https://firstcoastsubzero.com/models/legacy-integrated/) Condenser at the bottom. PRO ### [PRO series](https://firstcoastsubzero.com/models/pro/) Condenser at the top. 424 · 427 · 430 ### [400 Series wine](https://firstcoastsubzero.com/models/wine-400-series/) Condenser at the bottom. UC ### [Undercounter (UC)](https://firstcoastsubzero.com/models/undercounter/) Condenser at the bottom. 600 · 700 ### [600 / 700 Series](https://firstcoastsubzero.com/models/legacy-600-700/) Condenser at the top. Independent service company ## Book a diagnostic $80 flat diagnostic, credited toward the repair. Written estimate before any part is ordered or any work begins. Mon–Fri 8am–6pm · Sat 9am–4pm · Sun closed. Scheduled appointments only. No after-hours or emergency service. [Call (904) 604-7755](tel:+19046047755) [Book online](https://nexfield.pro/crm/book?u=44) [Contact](https://firstcoastsubzero.com/contact/) 40 miles by road from Fruit Cove and St. Johns County. Drive distance, not straight-line radius. 90 days labor, 365 days parts, genuine OEM components. EPA Section 608 certified technicians — the federal requirement to open a sealed refrigeration system.