Thermador Refrigerator Error Code 3-3-4

Error code 3-3-4 on a Thermador refrigerator indicates an internal ice maker fault. The refrigerator's control system has detected a failure within the ice maker assembly itself. Ice production will be halted until the issue is resolved. The first step is to power cycle the appliance, and if the code returns, the ice maker assembly should be replaced.

A homeowner can perform the power cycle step without any tools. If the fault persists, replacing the ice maker assembly is a moderately involved repair that requires disconnecting the water supply line and electrical connections to the unit. Technicians with appliance repair experience can typically complete this job, but those unfamiliar with refrigerator disassembly may prefer to call a professional.

If a power cycle resolves the issue, there is no parts cost. If the ice maker assembly needs to be replaced, parts costs typically range from around $100 to $300 or more depending on the specific model. Adding professional labor, the total repair cost generally falls in the range of $200 to $500, though this can vary based on your location and service provider.

A power cycle reset may clear the 3-3-4 code if the fault was caused by a temporary control communication error. To reset, switch the refrigerator off, wait a few minutes, and turn it back on. If the code reappears after the reset, the ice maker has an internal hardware failure and the unit will need to be replaced.

Yes, the 3-3-4 fault is specific to the ice maker and does not affect the refrigerator's cooling or freezing functions. Food stored in the refrigerator and freezer compartments remains safe. The only impact is that the ice maker will not produce ice until the fault is cleared or the unit is replaced.