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Electrical shock hazard; disconnect power before servicing and discharge capacitors.
Steps to enter the Service Test Mode using the refrigerator display and keypad.
Follow all safety information provided in Service Manual 16022769 for safe operation.
Diagram illustrating the electrical components and wiring of the refrigerator.
Procedure to enter the Forced Defrost Mode using the refrigerator display and keypad.
Electrical shock hazard; disconnect power before servicing and discharge capacitors.
Steps to enter the Service Test Mode using the refrigerator display and keypad.
Follow all safety information provided in Service Manual 16022769 for safe operation.
Diagram illustrating the electrical components and wiring of the refrigerator.
Procedure to enter the Forced Defrost Mode using the refrigerator display and keypad.
This document provides technical information and service specifications for a bottom-mount refrigerator, covering models such as AFD2535DEB, MFD2560HEB, and their variants. It outlines various operational modes, diagnostic tests, and maintenance procedures to ensure proper functioning and troubleshooting of the appliance.
The refrigerator features several operational modes designed for both normal use and service diagnostics. In its normal operating state, the appliance maintains specific temperature ranges for both the refrigerator and freezer compartments, with performance metrics detailed for various ambient temperatures. The control system dynamically adjusts operations, including compressor run time and defrost cycles, to optimize energy efficiency and food preservation.
For service and maintenance, the refrigerator offers a "Service Test Mode" that allows technicians to perform a series of diagnostic tests. To enter this mode, a specific sequence of actions involving the refrigerator door light switch and the Refrigerator Temperature Up keypad must be followed. Once in Service Test Mode, the control displays "SE" to confirm entry, followed by the software version. This mode enables technicians to assess the functionality of various components, including the defrost thermostat, compressor, condenser fan, and evaporator/freezer fan.
One key diagnostic feature is the "Forced Defrost Mode." This mode is particularly useful for troubleshooting defrost system issues. To activate it, a specific sequence of holding the refrigerator door light switch and pressing the Refrigerator Temperature Down keypad is required. Once activated, the control displays "Fd," and the unit enters a defrost cycle, turning off the compressor, evaporator fan, and damper. This allows technicians to observe the defrost heater's operation and verify the defrost thermostat's state. The system also offers a "short run period test" and a "long test mode" within forced defrost, toggled by the Refrigerator UP key, though the long test mode is primarily for factory use.
The refrigerator also includes a "Programming Mode" for updating or verifying the unit's program code. This mode is accessed by holding the fresh food door light switch and pressing the Freezer Temperature Down keypad three times. In this mode, the control displays "PE," and technicians can view or modify the program code, which is typically found on the unit's serial plate. This feature is crucial for ensuring the refrigerator operates with the correct software parameters, which can impact overall performance and efficiency.
Defrost operation is managed by the Control Board, which adapts compressor run time between defrosts to achieve optimal intervals. After initial power-up, the defrost interval is set to 4 hours of compressor run time. The system monitors the defrost heater's on-time to adjust subsequent defrost intervals. For instance, if the defrost thermostat remains closed longer than the optimum 15 minutes, the next defrost interval is shortened. Conversely, if it opens early, the interval is extended. There's also a 4-minute wait time before a defrost cycle begins and a 4-6 minute drip time after the thermostat opens before the compressor restarts. If the defrost thermostat fails to open within 25 minutes, the control board terminates defrost and resets the interval to an 8-hour minimum.
The Service Test Mode includes specific tests for individual components:
Maintenance features also include guidelines for addressing excessive moisture on the fresh food door mullion. The wiring diagram provides an alternate configuration for the refrigerator door harness that can continuously power the fresh food door mullion heater, helping to reduce moisture buildup. It's noted that the energy switch should typically be in the "Off" position to energize this heater.
Safety warnings are prominently featured throughout the document, emphasizing the importance of disconnecting power before servicing, discharging capacitors, and ensuring proper wiring to prevent electrical shock and personal injury. These warnings underscore the critical need for adherence to safety protocols during any service or maintenance activity.
General| Brand | Amana |
|---|---|
| Model | AFD2535DEB |
| Total Capacity | 25.0 cu. ft. |
| Ice Maker | Yes |
| Color | Black |
| Water Dispenser | Yes |
| Defrost Type | Frost-Free |
| Energy Star Certified | Yes |
| Type | Side-by-Side |
| Width | 35.75 inches |
