Component guide
Defrost system
Prevents excessive frost on frost-free evaporators.
What it does
Prevents excessive frost on frost-free evaporators.
Symptoms that can involve this component
Evaporator frost blanket, airflow loss, temperature rise after days/weeks.
Other causes that can look similar
Heater, sensor/thermostat, control, door sealing/humidity issue.
Homeowner-safe observations
Record the exact error code, when it occurs, noises, visible water/frost, and whether the problem is consistent. Use only user-accessible filters, vents, hoses or controls described in the owner manual.
When service is appropriate
Internal electrical measurements, energized testing, gas work, sealed refrigeration work and component replacement should be handled according to the manufacturer service information by a competent person.