Hopkins no-cool causes
1. Compressor start relay failed
Clicking every few minutes with a warming box. The most frequent finding on Hopkins' compact and top-freezer units. Inexpensive and urgent, because a failed relay can damage the compressor.
2. Defrost heater or bimetal open
Frost seals the evaporator and airflow stops. Recovery after an overnight unplug followed by failure within days confirms it.
3. Condenser fan seized or no clearance
Tight alcove installs trap heat. The compressor runs continuously and the cabinet stays warm. A clean, a fan motor, and correct clearance restore it.
4. Thermistor out of specification
The control believes the box is already cold and stops calling for cooling. Cheap part, dramatic symptom, and common on the newer apartment-grade units.
5. Evaporator fan motor dead
Freezer holds cold, fresh food warms. Hold the door switch and listen behind the rear panel — silence confirms it.
6. Sealed-system leak
Least common. Runs continuously with partial cooling. On an apartment-grade unit we will tell you honestly when replacement makes more sense than a recharge.