What defrost system fault means, common causes, and whether it's something you can check yourself before calling for service.
Frost accumulates unchecked without a working heater to periodically clear it.
The system that schedules defrost cycles can fail even when the heater itself is fine.
Senses when defrost is needed and complete, and can fail in either the open or closed position.
Based on this code, these are the components our technicians check first. The exact part depends on your model and what we find during diagnosis.
Same-day diagnosis, genuine OEM-compatible parts, warranty of up to 1 year.
*SubZero Repair Denver is an independent repair company and is not affiliated in any way with Sub-Zero, Inc., Wolf Appliance, Inc., or any of their distributors. We are not a factory service provider and specialize exclusively in out-of-warranty appliance repairs.