08/04/2026
Sub-Zero Ice Dispenser Repair.
A customer’s Sub-Zero refrigerator was making ice, but it wouldn’t dispense. After diagnosing the issue, we found a failed **mullion heater assembly** causing frost buildup that blocked the ice chute.
We replaced the OEM Sub-Zero mullion heater assembly and restored the ice dispenser to proper working order.
If your Sub-Zero is making ice but not dispensing it, professional diagnosis can get it working again quickly and reliably.