Wayzata no-cool causes
1. Condenser packed behind the grille
Built-in condensers sit behind a top or toe grille and collect dust and pet hair invisibly. Airflow drops, head pressure climbs, and cooling falls off even though the unit sounds normal. Cleaning plus a condenser fan often restores it fully.
2. Evaporator fan motor failed on one circuit
On dual-refrigeration Sub-Zero units, one compartment warms while the other holds. The fan on that circuit is dead, and the repair is limited to that side.
3. Drain heater fault icing the evaporator
Ice accumulates on the coil until airflow stops. Common on IC column units and fully repairable, but it requires pulling the unit to reach the drain.
4. Control board or thermistor fault
The control reads the compartment as cold and never commands cooling. We confirm with live readings at the component before quoting a board, because built-in boards are expensive.
5. Sealed-system leak or compressor fault
Continuous running with partial cooling, or icing on only one end of the evaporator. EPA 608 certified, so recovery, leak repair, and recharge happen in-house rather than being referred out.