Thermador Refrigerator Error Code 3-4-5

Error code 3-4-5 on a Thermador refrigerator indicates an internal ice maker fault. The code means the ice maker module has detected a problem within its own components that it cannot self-correct. This is distinct from water supply or temperature faults, as the failure originates inside the ice maker assembly itself. The recommended first step is a power cycle, and if the code returns, the ice maker must be replaced.

Start by switching the refrigerator off, waiting a few minutes, and turning it back on. If the 3-4-5 code does not return, the issue was a transient fault and no repair is needed. If the code comes back, the ice maker assembly requires replacement. Also check the ice maker tray and ejector arms for any ice jams or obstructions before ordering a replacement part.

Because error code 3-4-5 typically requires replacing the ice maker assembly, repair costs generally fall in the range of $150 to $400 or more depending on the specific model, the cost of the replacement ice maker module, and whether you hire a technician or perform the replacement yourself. Labor charges from an appliance repair professional can add $100 to $200 to the total. Getting a model-specific parts quote before committing to the repair is recommended.

A power cycle, turning the appliance off and back on, is the first recommended diagnostic step for error code 3-4-5. If the fault was caused by a temporary glitch in the ice maker's control logic, the reset may clear it permanently. However, if the code reappears after the refrigerator restarts, the ice maker has a confirmed hardware failure and resetting will not resolve the underlying problem.

Error code 3-4-5 is specific to the ice maker and does not affect the refrigerator or freezer cooling systems. Your food storage compartments will continue to operate normally during this fault. The code is not associated with any electrical or fire hazard, so the appliance is safe to use while you arrange a repair, though ice production will be stopped.