Component guide
Compressor
Circulates refrigerant in refrigerators/freezers/AC/heat-pump dryers.
What it does
Circulates refrigerant in refrigerators/freezers/AC/heat-pump dryers.
Symptoms that can involve this component
Poor cooling, abnormal cycling, hum/click in some faults.
Other causes that can look similar
Power/start device/inverter, airflow/coil condition, sealed-system fault, compressor mechanical/electrical 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.