--- title: "Refrigerator defrost & cooling repair" description: "JennAir refrigerator defrost and cooling repair — a cabinet drifting warm, frost building where it should not, or a column that runs constantly and never…" url: "https://jennairmiami.support/services/refrigerator-defrost-and-cooling-repair/" date_modified: "2026-08-24" Appliance type: "Freezers, Refrigerators" --- # JennAir refrigerator defrost & cooling repair ### Defrost first, refrigerant last The order this job is worked in is not arbitrary. A cabinet that has stopped holding temperature is, in rough order of likelihood, a defrost circuit that has let ice build on the evaporator, an evaporator fan that has stopped moving air, a thermistor reporting the wrong number, a damper that is not opening, a condenser choked with dust, and a door that is not sealing. The sealed system is at the end of that list, not the start, and it is reached by ruling the rest out on record. ### What we are called out for - **The defrost circuit** — heater, sensor, control — the commonest real repair here and the one that hides as everything else. - **The evaporator fan**, which is audible when it is going and silent when it has gone. - **Thermistors**, cheap to replace and easy to misread from a display. - **The condenser**, which in this city is maintenance with a service call attached. - **The defrost drain**, which ices closed and puts meltwater on the floor of the cabinet. - **The control board**, particularly after an outage or a brownout. ### Columns behave differently from combination cabinets A column is a single-temperature cabinet with one sealed system, usually installed beside another column and finished with matching panels. That makes a warm column a simpler diagnosis than a warm side of a two-temperature cabinet — there is no shared air path to investigate — and it means the food can move next door while the work happens. It also means the cabinet comes forward through your millwork, which is the part of the appointment worth planning. ### What it costs From $165. A drain clear or a sensor is the bottom; a defrost heater with the cabinet out of a built-in housing is the top. The exact cost is confirmed after the on-site diagnostic and agreed before anything is opened. What this involves Airflow and defrost measured before anything about refrigerant Evaporator fan, heater, thermistors and damper checked in order The condenser cleaned and the result proved before we leave Which part of the cabinet is wrong On a combination cabinet, a cold freezer with a warm refrigerator is airflow. On two separate columns, a warm one beside a cold one rules out the house, the room and the installation in a sentence. That answer changes where the visit starts. Look at the evaporator A coil under a sheet of ice is a defrost problem wearing a cooling problem's clothes, and it is the single commonest real repair in this category. The heater, the sensor and the control that drives them are measured rather than assumed. Airflow, then sensing The evaporator fan, the damper that meters cold into the fresh-food side, and the thermistors the cabinet uses to know its own temperature. Each of them produces a warm cabinet and none of them is expensive. The condenser, which is maintenance In this climate a condenser nobody has cleaned since the kitchen was built is doing real harm. It is cleaned on the visit and the result is measured before the appointment ends, because a clean condenser sometimes is the repair. Defrost first, refrigerant last The order this job is worked in is not arbitrary. A cabinet that has stopped holding temperature is, in rough order of likelihood, a defrost circuit that has let ice build on the evaporator, an evaporator fan that has stopped moving air, a thermistor reporting the wrong number, a damper that is not opening, a condenser choked with dust, and a door that is not sealing. The sealed system is at the end of that list, not the start, and it is reached by ruling the rest out on record. What we are called out for The defrost circuit — heater, sensor, control — the commonest real repair here and the one that hides as everything else. The evaporator fan, which is audible when it is going and silent when it has gone. Thermistors, cheap to replace and easy to misread from a display. The condenser, which in this city is maintenance with a service call attached. The defrost drain, which ices closed and puts meltwater on the floor of the cabinet. The control board, particularly after an outage or a brownout. Columns behave differently from combination cabinets A column is a single-temperature cabinet with one sealed system, usually installed beside another column and finished with matching panels. That makes a warm column a simpler diagnosis than a warm side of a two-temperature cabinet — there is no shared air path to investigate — and it means the food can move next door while the work happens. It also means the cabinet comes forward through your millwork, which is the part of the appointment worth planning. What it costs From $165. A drain clear or a sensor is the bottom; a defrost heater with the cabinet out of a built-in housing is the top. The exact cost is confirmed after the on-site diagnostic and agreed before anything is opened. ### The fridge is warm and the freezer is cold. On a combination cabinet that is one of the most diagnostic sentences there is. The freezer does the cooling and air is moved into the fresh-food side, so a cold freezer with a warm refrigerator usually means the air is not arriving — a damper, an evaporator fan, or a defrost problem that has iced the coil solid. It is very rarely refrigerant, which is the expensive answer people brace for. ### Is this covered by the manufacturer? Possibly, and it is worth checking before you pay anybody. This maker covers refrigeration for two years parts and labor, then years three to five on the cavity liner and sealed system with labor included, then years six to ten on the sealed system with parts only. Those are its own words from its own document. Its service line is [(305) 745-7213](tel:+13057457213). We are independent and we would rather tell you than take the call. ### How long does this repair take? The work itself is usually short. What takes the time on this make is getting to it: a column or a built-in cabinet is trimmed into your millwork and may be carrying a cabinet door on its own hinges, and it comes forward and goes back leveled and aligned. That is why we ask what kind of installation it is when you book. ### It runs constantly. Is that the compressor going? Almost never, and that is the useful part. A cabinet that runs and runs is usually one that cannot get rid of its heat — a packed condenser, a blocked toe-kick grille, a door seal letting warm air in — or one whose defrost cycle has stopped clearing the coil. All of those are cheaper than the answer people fear, and all of them are checked first. --- **[Read full article: Refrigerator defrost & cooling repair](https://jennairmiami.support/services/refrigerator-defrost-and-cooling-repair/)**