W10811276 RevB

FOR SERVICE TECHNICIAN'S USE ONLY

NOTE: This sheet contains important Technical Service Data.

DANGER

Electrical Shock Hazard

Only authorized technicians should perform diagnostic voltage measurements.

After performing voltage measurements, disconnect power before servicing.

Failure to follow these instructions can result in death or electrical shock.

WARNING

Electrical Shock Hazard

Disconnect power before servicing.

Replace all parts and panels before operating.

Failure to do so can result in death or electrical shock.

Voltage Measurement Safety Information

When performing live voltage measurements, you must do the following:

• ■ Verify the controls are in the off position so that the appliance does not start when energized.
• ■ Allow enough space to perform the voltage measurements without obstructions.
• ■ Keep other people a safe distance away from the appliance to prevent potential injury.
• ■ Always use the proper testing equipment.
• ■ After voltage measurements, always disconnect power before servicing.

Temperature Charts

No-Load Performance, Controls in Normal Position

Table Caption: This table presents performance data for a system, showing kilowatt-hours per 24 hours, percent run time, and cycles per 24 hours across three different ambient temperature points (70°F, 90°F, 110°F) for a 26 cu. ft. unit.

Table Caption: This table shows the average food temperatures in refrigerator, freezer, and ice maker compartments of a 26 cu. ft appliance across different ambient temperatures, indicating how well the appliance maintains its set temperatures under varying external conditions.

Temperature Relationship Test Chart

Table Caption: This table presents temperature data for a freezer's evaporator and suction line under different ambient conditions and for a 26 cubic foot unit, showing the resulting internal temperatures and suction line temperatures.

Table Caption: This table shows projected performance metrics for a system at varying ambient temperatures and conditions, including average total wattage, suction pressure, and head pressure for a 26 cu. ft capacity. The data indicates how these values are expected to change with a 10% reduction in average total wattage, a 2 PSIG decrease in suction pressure, and a 5 PSIG reduction in head pressure across 70°F (21°C) and 90°F (32°C) ambient conditions.

Component Specifications

Table Caption: This table details the electrical specifications for various components of a refrigeration system, categorized under "Cooling," "Controls," and "Ice and Water." It includes information such as voltage, frequency, wattage, amperage, resistance, capacitance, RPM, and operating temperatures for each part.

Control Board Troubleshooting

SW1

SW2

SW3

SW4

SW5

SW6

SWITCH DIAGRAM

To Enter Service Diagnostics Mode:

NOTE: Refrigerator must not be in lockout mode prior to entering Service Diagnostic Mode.

1. Press SW1 and SW2 simultaneously for 3 seconds.
2. Release both buttons when you hear the CHIME indicator. The display will show '01' to indicate the control is in Step 1 of the diagnostics routine.

To Exit Service Diagnostics Mode, Choose one of the Following Options:

• ■ Press SW1 and SW2 simultaneously for 3 seconds OR
• ■ Unplug refrigerator or disconnect power OR
• ■ Allow 20 minutes to pass.

Following the exit of the diagnostic mode, the controls will then resume normal operation.

NOTES:

• ■ Cooling diagnostics are Service tests 1 through 7 and 32 through 39.
• ■ Dispensing diagnostics are Service tests 8 through 31.
• ■ Each step must be manually advanced.
• ■ Press SW5 to move to the next step in the sequence.
• ■ Press SW4 to back up in the sequence to the previous step.
• ■ Diagnostics will begin at Service Test 1.
• ■ Each step is displayed in the 2 digits of the dispenser user interface display.
• ■ The step results are displayed in the 2 digits on the dispenser user interface and display 2 seconds after the step number is displayed. An amber 'Order Filter' light will be shown to designate that the step number is being displayed, and a red 'Replace Filter' light will be shown to designate that the status of the step is being displayed.
• ■ All button and pad inputs shall be ignored and all inputs shall be off except as described in the actions for each step.

Service Test - 1: FC Thermistor

• ■ The board will check the resistance value of the thermistor and display flashes results on the Temp display (01 = pass, 02 = open, 03 = short).

Service Test - 2: RC Thermistor

• ■ The board will check the resistance value of the thermistor and display the results on the Temp display (01 = pass, 02 = open, 03 = short).

Service Test - 3: Evaporator Fan and Air Baffle Motors

• ■ Turn on the FC evaporator fan and the air baffle motor.
• ■ Monitor the air baffle feedback. SW3 (01 = fan on. Air baffle open, 02 = fan on. Air baffle closed).