The short answer
A cabinet that runs continuously and still warms up has lost airflow far more often than it has lost refrigerant. The compressor is working; something is stopping the cold it makes from reaching the food. Listen at the freezer with the door open and the light switch held in. Hearing the evaporator fan separates an airflow fault from a fan fault before anything is opened. On a Summit Appliance refrigerator the cause that ranks first is condenser coil blanketed in dust.
What you observe
- The freezer is cold but the refrigerator is not — Airflow between the two compartments has stopped.
- The compressor never stops running — The same fault seen from the other side: it never reaches its target.
- NEAR MISS — the cabinet is silent and nothing is cold — That is a power or start-relay fault and it is a different page.
Causes, most likely first on a Summit Appliance refrigerator
- Condenser coil blanketed in dust — The coil rejects the heat the compressor removes, and once it is covered the machine runs continuously without ever getting the cabinet down. It ranks first on a Summit Appliance refrigerator because an undercounter cabinet has its coil crammed into a shallow plinth, so it fouls far faster than a free-standing one.
- Defrost cycle stalled, evaporator iced over — The heater or its control stops clearing the coil, frost builds into a solid sheet behind the freezer panel, and air stops moving while the compressor runs on. Second on this platform: an adaptive defrost stalls quietly weeks before it fails outright, so the cabinet warms long before anything looks wrong.
- Evaporator fan motor failed — The fan behind the freezer panel is what pushes cold into the fresh-food side, and when it stops the freezer stays cold while the refrigerator warms. Ranked here because a cold freezer beside a warm refrigerator is this fault and almost nothing else.
- Door not sealing, or left ajar — Warm humid air entering continuously loads the evaporator with frost and the compressor with work, and the cabinet never recovers. Last, and the reason to work down the list rather than guess: a cabinet opened constantly, or one whose door is not pulled shut, never gets a chance to catch up.
Check in this order, and why
- Feel the coil area at the back or in the plinth for heat and dust — A thick dust blanket is visible and it is the cheapest fix here.
- Empty the freezer and look at the rear panel for a sheet of frost — A solid sheet rather than a dusting settles it immediately.
- Open the freezer, hold the door switch in and listen for the fan — A cold freezer with a warm cabinet is the fan's signature.
What an owner can safely check
- Unplug the cabinet and vacuum the condenser coil and its grille thoroughly — Do this twice a year on a compact or built-in cabinet, more with pets.
Tools: vacuum, soft brushAbout 25 min
- Empty the cabinet, switch it off and leave both doors open for a full defrost — Cold restored afterwards confirms the defrost system as the cause.
Tools: towelsAbout 45 min
- Check the gasket grips paper all the way round and clean the sealing face — Also check the cabinet is tipped slightly back so doors self-close.
Tools: cloth, paperAbout 15 min
- STOP HERE — the next check means a meter, a panel, or both — The ranking above tells you what to ask for; it does not make the remaining tests owner work.
Before you open anything
Safety
Unplug the cabinet or switch off its breaker before removing any interior panel — a capacitor can hold a charge after the power is off. Never cut, open or attempt to recharge a sealed refrigerant line.
When to call a technician
Call once the defrost, the coil, the door and the fan are all clean and the cabinet still runs warm: what is left is the sealed system, and refrigerant work is licensed work. On a compact machine, expect access to be the larger half of any labour quote — the part itself is rarely the expensive part.
Nearest pages of this class
What this page does not cover
This is the generalized page for a Summit Appliance refrigerator. It does not carry anything model-specific: no part numbers, no wiring colours, no panel sequence and no torque figures, because those differ between families sold under the same badge. Where a family- or model-level page exists it is linked above, and it is the more specific answer of the two.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
