Siemens Frost Accumulation / Defrost System Issue

Excessive frost or ice buildup on the evaporator or interior walls

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Door not sealing properly, Frequent door openings, Failed defrost heater or thermostat, Blocked air vents

Safety: Unplug the unit before defrosting. Do not use sharp tools to remove ice.

Reducing frost:

Manual defrost: Turn off the ice maker and leave the door open until all frost melts. Use towels to absorb water.
Check gasket and door alignment: Repair or replace as needed to prevent warm air infiltration.
Inspect vents: Ensure air vents are not blocked by ice or items in the bin.
Defrost components: If frost returns quickly, test the Siemens defrost heater and thermostat as described in E12.

Medium 3/5

Defrost Heater / Door Gasket

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