Maytag Refrigerator MTB2156AEB Fridge too warm

This defrost timer controls the automatic defrost cycle in select refrigerators and freezers, switching between cooling and defrost to clear frost on the evaporator. It helps maintain stable temperatures and prevents heavy ice buildup and long run times. What it does:

• Alternates the system between cooling and defrost on a timed schedule
• Sends power to the defrost heater during defrost, then returns power to the compressor and fans
• Failure can cause heavy frost on the evaporator/back freezer wall
• May lead to warmer temperatures, constant running, short cycling, or no-cool if stuck in defrost

• 1 defrost timer

• Disconnect power before servicing
• Access location varies by model
• Note wire positions and transfer them one at a time to the new timer
• Mount securely in the same orientation as the original and verify normal cycling after power is restored

This evaporator fan motor circulates cold air across the evaporator coils and through the freezer and fresh-food sections to maintain even temperatures. Replacing a failed or noisy motor restores proper airflow and dependable cooling performance.

• Drives the evaporator fan blade to move air over the coils and throughout the cabinet
• Helps maintain consistent temperatures between freezer and refrigerator compartments
• Failure symptoms include weak/no airflow, the fan not running, loud squealing/rumbling, or the fresh-food section warming up
• Poor airflow can also lead to frost or ice buildup on the freezer back panel

• Disconnect power before servicing; wear cut-resistant gloves and eye protection
• Access the motor behind the freezer's rear panel; use caution around sharp metal and evaporator fins
• Note wire positions; transfer the fan blade and any brackets/grommets from the original motor; secure wiring connections
• Ensure the blade spins freely; engage the door switch when testing and strong airflow after reassembly

This defrost thermostat is the temperature limit switch for the evaporator. It lets the defrost heater run when coils are icy and opens as they warm to end the cycle, helping stop frost buildup and restore steady cooling.

• Monitors evaporator temperature; closed when cold to allow the defrost heater to energize
• Opens as the coil warms to terminate defrost and protect components from overheating
• Failure may cause heavy frost on the back wall/evaporator and weak airflow or a warm refrigerator section
• Can also lead to long run times or cooling that returns only briefly after a manual defrost

• Unplug the refrigerator or disconnect power before servicing
• Located behind the freezer's rear panel on the evaporator; remove shelves/ice bin and panel to access
• Reinstall in the same position/clip for firm contact with the coil or tubing
• Make secure, insulated wire connections and route wiring away from sharp edges and moving parts

This radiant-style defrost heater melts frost from the evaporator during automatic defrost cycles. Replacing a failed heater restores airflow and helps maintain consistent temperatures while preventing ice buildup on the freezer back wall.

• Heats the evaporator coil to clear frost/ice during the defrost cycle
• Promotes proper airflow for stable cooling performance
• Common fix for heavy frost on the back freezer panel, warming in the fresh food section, or a noisy evaporator fan contacting ice
• If the element tests open (no continuity), the unit will not defrost

• Disconnect power before servicing; allow built-up ice to melt for safe access
• Access from the freezer by removing the rear panel; handle the glass-sheathed element carefully
• Note wire routing and transfer any reusable shields, clips, or insulation from the original part if present
• After replacement, verify the defrost thermostat/sensor and control initiate a defrost cycle

This defrost thermostat senses the evaporator coil temperature and controls the defrost heater. Replacing a failed thermostat restores proper defrosting to prevent heavy frost buildup and helps your refrigerator keep consistent, reliable cooling.

• Monitors evaporator temperature to allow the defrost heater to energize and to terminate the cycle as the coil warms
• Protects against overheating in the evaporator area during defrost
• Failure symptoms include frost/ice buildup on the evaporator cover, reduced airflow, fresh food section warming, or the unit not defrosting
• Typically mounts clipped to the evaporator tubing inside the freezer

• Disconnect power before servicing and remove the freezer's rear panel to access the evaporator
• Transfer the clip/bracket if present and mount the new thermostat in the same location, ensuring firm metal-to-metal contact with the evaporator tubing
• Route wires away from the heater and moving parts; secure connections and reassemble panels before restoring power
• Wear cut-resistant gloves—sheet-metal edges can be sharp

This heater clip secures the defrost heater in your refrigerator. Keeping the element properly positioned helps the defrost system work as designed and reduces rattling or damage from a loose or misaligned heater.

• Holds the defrost heater securely in place on its mounting point
• Helps maintain correct heater placement for consistent frost removal
• Replace if the clip is missing, broken, bent, or corroded
• Common symptoms include a loose/dangling heater, rattling noises, or recurring frost/ice around the evaporator area

• Disconnect power before servicing the appliance
• Access the defrost heater behind the freezer's rear panel; note the original clip orientation
• Install the new clip so the heater is seated and not contacting wiring or plastic; do not deform the element or coils
• Restore power and verify the heater is secured in place