Parts for Amana AFU1567BW: 04 - Unit Compartment & System Parts

This defrost timer controls when your refrigerator or freezer enters and exits the automatic defrost cycle to clear frost from the evaporator coils. Replacing a failed timer restores reliable defrosting to help maintain airflow, cooling performance, and stable temperatures.

• Advances on a timed schedule to initiate and end the defrost cycle
• Sends power to the defrost heater during defrost, then returns the system to cooling
• Helps prevent heavy frost buildup that restricts airflow and cooling
• Common symptoms of a bad timer: unit not defrosting or warming over time, heavy ice on the evaporator/cover, stuck running or stuck in defrost, or a timer that won't advance

• Disconnect power before servicing
• Access the timer (commonly in the control housing or machine compartment)
• Note/photograph wire positions and move leads one at a time to the new timer; mount securely
• Restore power and monitor for proper cycling; some models allow using the timer's advance slot to start a test defrost

This heater is the factory heating element that supplies controlled heat for the appliance's designated cycle, helping restore consistent, reliable performance when the original element is damaged or has failed.

• Converts electrical energy into heat for the unit's specific heating function
• Common signs of failure: cycles that don't reach temperature, longer run times, or uneven results
• Visual clues can include breaks, burn marks, or hot spots on the element
• Restores designed heating performance when installed in a compatible unit

• Disconnect power at the breaker before servicing; allow components to cool
• Note wire positions and mounting hardware; transfer any brackets/insulators from the original if required
• Avoid kinking the element or over-tightening mounting screws; confirm clearances from wiring and panels
• After installation, check continuity and run a brief test cycle while monitoring operation

This defrost thermostat is a bi-metal switch that senses evaporator temperature during defrost and opens to stop heater power once the coil warms. Replacing a failed thermostat restores proper defrost, reducing ice buildup and airflow-related cooling problems.

• Monitors evaporator coil temperature during defrost
• Opens the heater circuit at a set temperature; recloses when cold for the next defrost
• Helps protect against overheating and ensures consistent defrost operation
• Common symptoms: heavy frost on the evaporator, weak airflow/warm fresh food section, repeated ice buildup after manual defrost

• Disconnect power before servicing; wear cut-resistant gloves
• Access the thermostat at the evaporator behind the freezer's rear panel
• Move wires one-for-one from the old part; mount in firm contact with the coil/tubing and secure leads away from the fan
• After installation, the thermostat should show continuity when cold and open circuit when warm