tech-sheet-12827917
Service Specifications Bottom Mount Refrigerator Technical Information

! WARNING Due to a possibility of personal injury or property damage, always contact an authorized technician for service or repair of this refrigerator. To avoid risk of electrical shock that can cause death or severe personal injury, disconnect unit from power before servicing unless tests require power. Discharge capacitors through a 10,000-ohm resistor before handling. Wires ! CAUTION removed during disassembly must be replaced on correct terminals to ensure proper grounding and polarization. All safety information must be followed as provided in Service Manual 16022769. 3. Release the refrigerator door light switch.

4. The control will display Fd to confirm entry into the Forced Defrost Mode.

Freezer Refrigerator

F ! WARNING

5. Entry is confirmed by pressing the Refrigerator Down key once more. The unit is off and in the Defrost Mode. To avoid risk of electrical shock that can cause death or severe personal injury, disconnect unit from power before servicing unless testing is required. Discharge capacitors through a 10,000 ohm resistor before handling. Wires Note: All control functions will be turned off (Compressor, Defrost, Evaporator Fan, the damper will removed during disassembly must be replaced on correct terminals to ensure proper grounding and polarization.

remain in its current position).

6. The control will default to the short run period test as shown here:

Freezer Refrigerator

S No-Load Performance, Controls in Normal Position

Note: You can toggle between the (S)hort and (L)ong test mode by pressing the Refrigerator UP Key. Percent Run Time Cycles/24 hr Refrigerator Center Freezer Compartment ±10% ±25% Long Test mode is used for factory test and should not be used in the field. Kw/24 hr ±0.4 Compartment Average Food 70° 90° 110° 70° 90° 110° Temperature ±3°F Average Food Temperature ±3°F

Freezer Refrigerator Ambient °F 70° 90° 110° 70° 90° 110° 70° 90° 110° 25 cu ft 1.0 1.60 2.3 0 L 28 48 65 35 39 25 38 36 35 0 0

7. Once the desired mode is displayed, confirm the forced defrost by pressing the Refrigerator down Key once. Temperature Relationship Test Chart

The defrost will begin immediately and the display will return to a normal operating display with set point values. Suction

Freezer Refrigerator Evaporator Evaporator Suction Line Average Total Pressure Head Pressure ±7°F Wattage ±10% ±2 PSIG ± 5 PSIG 4 4 Outlet Inlet ±3°F ±3°F

8. Close the Refrigerator door(s). You are in the defrost mode Ambient °F 70° 90° 70° 90° 70° 90° 70° 90° 70° 90° 70° 90° Note: Forced Defrost mode can be exited at any time prior to step 7 by closing the Refrigerator Door(s). 25 cu ft -20 -17 -20 -17 85 105 135 140 6″(Vac.) 0 87 137 Service Test Mode: Schematic The service test functions are performed using the refrigerator display and keypad. Enter the Service Test Mode by performing the following sequence of events:

1. Hold the refrigerator door light switch closed.

2. Press the Refrigerator Temperature Up keypad 3 times consecutively.

Note: The 3 Keystrokes must be done consecutively and within 10 seconds.

3. Release the refrigerator door light switch. Refrigerator 4. The control will display SE to confirm entry into the service mode.

Freezer

S E

5. Entry to the Service Menu is confirmed by pressing the Refrigerator Up key once more.

6. The control will display its software version for 3 seconds.

Freezer Refrigerator

2 5

7. Following the software revision display the freezer display will read the first test number in the

diagnostic tree. The refrigerator display will be blank

Freezer Refrigerator

1

Note: All control functions will be turned off (Compressor, Defrost, Evaporator Fan, the damper will remain in its current position).

8. You are now in the SERVICES TEST operational mode and may use the diagnostic tests. The Service Test Mode can be exited at any time by closing the Refrigerator Door(s).

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Component Specifications Service Specifications

! WARNING ! WARNING

To avoid risk of electrical shock that can cause death or severe personal injury, disconnect unit from power before To avoid risk of electrical shock that can cause death or severe personal injury, disconnect unit from power before servicing unless tests require power. Discharge capacitors through a 10,000-ohm resistor before handling. Wires servicing unless tests require power. Discharge capacitors through a 10,000-ohm resistor before handling. Wires removed during disassembly must be replaced on correct terminals to ensure proper grounding and polarization. removed during disassembly must be replaced on correct terminals to ensure proper grounding and polarization.

Programming Mode:

Component Specifications all parts Note: The Program Code is located on the Serial Plate on this unit after the word Code. Compressor run capacitor 115VAC/60HZ unless noted Compressor 220 VAC 1.Open the Fresh Food door and hold the Fresh Food door light switch closed while pushing the Freezer Volt…………………………………………….. 15 µfd ± 10% Electric damper control Capacitance ……………………………….. Temperature Down Key pad 3 times consecutively. Thermistor 730 BTUH BTUH …………………………………………. 60 Hz / 125 watts Note: The 3 Keystrokes must be done consecutively and within 10 seconds. Condenser motor Watt …………………………………………… 19.0 amps± 15% Current Lock rotor ………………………… 1.09 amps± 15% 2.Release the Fresh Food door light switch. Current Full load ………………………….. 3.33 ohms± 15% Resistance Run windings ……………… 4.28 ohms± 15% 3.The control will display PE to confirm entry into the programming mode. Resistance Start windings …………….. 36 seconds Freezer Refrigerator Maximum closing time 20°F- 110°F Temperature Rating 1 P E RPM Resistance 4.Entry is confirmed by pressing the Freezer Down key once more. Temperature 10,000 ohms 77°F……………………………………………. 29,500 ohms Note: All control functions will be turned off (Compressor, Defrost, Evaporator Fan, the damper will 36°F …………………………………………… 86,300 ohms remain in its current position) 0°F………………………………………………

Rotation (facing end opposite shaft) Clockwise 5.The control will display the current Program Code. This value should be validated with the Program Code RPM 1250 RPM printed on the unit serial plate. Watt……………………………………………. 4.2 watts±15%@115VAC Current ……………………………………….. 0.63 amps± 15%@115VAC Freezer Refrigerator

2 5

Note: If the Program Code is correct, the Programming Mode is exited by closing the Refrigerator door(s).

Evaporator fan motor Rotation (facing end opposite shaft) Clockwise 6.To set the desired Program Code number press the Freezer and Refrigerator UP keys. The Overload/Relay RPM…………………………………… 2940 RPM corresponding digit will be advanced with each key press. Watt……………………………………. 4.6 ±15% watts@115VAC Control board 2.67 amps± 15% 7.Once the desired Program Code is displayed, press the Freezer DOWN Key until the Program Code Thermostat (Defrost) Ult. trip amps @ 158°F (70°C) ……….. 142°F ±16° Close temperature ……………………… 284°F ±9° begins flashing indicating it has been saved. Evaporator heater Open temperature………………………. 10 seconds ±5 Mullion Assembly w/ Heater 11 amps ±2amps Note: If you attempt to enter an invalid Program Code the control will not save the new code, but will flash the old Short time trip (seconds)……………….. 120VAC, 60 HZ Light switch Short time trip (amps @77°F (25°C).. code and this will be displayed. (The unit will NOT run with a Program Code of 00). Light switch / Interlock 120/240 VAC Energy Saver switch Volt…………………………………………….. 495 watts 8. Once the Program Code has been saved the Programming Mode is exited by closing the Refrigerator See Control Board section for 10/5 amps diagnostics door(s). If the new code is incorrect this process should be repeated after closing the Refrigerator door(s). Open Volt ……………………………………………. Closed The Programming mode can be exited at any time by closing the Refrigerator Door(s). Watt …………………………………………… 115 VAC Current ……………………………………….. 435 ±5% watts @ 115VAC Defrost Operation: Resistance across terminals: 29 ±5% ohms Above 42°F ±5°……………………………. The Control Board adapts the compressor run time between defrosts to achieve optimum defrost intervals by Below 12°F ±7° ……………………………. monitoring the length of time the defrost heater is on. After initial power up, defrost interval is 4 hours compressor run time. Defrost occurs immediately after the 4 hours. Volt…………………………………………….. Note: Once unit is ready to defrost there is a 4 minute wait time prior to the beginning of the defrost cycle. Wattage………………………………………. Optimum defrost is 15 minutes. Each additional minute the defrost thermostat remains closed, 1 hr. is subtracted from Resistance ………………………………….. the previous defrost interval. Each minute the thermostat opens prior to optimum defrost, it extends the next defrost interval 1 hr. When defrost thermostat opens there is a 4-6 minute drip time before compressor restarts or Control Volt……………………………………… 120 VAC Board will terminate defrost at 25 minutes if defrost thermostat has not opened and will reset the defrost interval to the Wattage………………………………………. 10±.5 watts @ 120VAC 8 hr. minimum setting. Resistance ………………………………….. 1440 ±5% ohms 4 hours of continuous compressor run resets the next defrost interval to 8 hours and will initiate a defrost, if 8 hours of compressor run time has also occurred. Resistance checked at leads at center of hinged side of Fresh Forced Defrost Mode: Food door. The forced defrost function is performed using the refrigerator display and keypad. Enter the Forced Defrost Mode by Type…………………………………….. SPST NC performing the following sequence of events:

Volt……………………………………… 125/250 VAC Current………………………………….. 8 / 6 amps

Type…………………………………….. SPDT NO/NC 1. Hold the refrigerator door light switch closed. Volt……………………………………… 125/250 VAC Current………………………………….. 5 / 2.5 amps 2. Press the Refrigerator Temperature Down keypad 3 times consecutively.

Type…………………………………….. SPST NO Note: The 3 keystrokes must be consecutive and within 10 seconds. Volt……………………………………… 125/250 VAC Current………………………………….. 16 / 8 amps

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© 2004 Maytag Services © 2004 Maytag Services

Wiring Diagram Service Specifications

! WARNING ! WARNING

To avoid risk of electrical shock that can cause death or severe personal injury, disconnect unit from power before To avoid risk of electrical shock that can cause death or severe personal injury, disconnect unit from power before servicing unless tests require power. Discharge capacitors through a 10,000-ohm resistor before handling. Wires servicing unless tests require power. Discharge capacitors through a 10,000-ohm resistor before handling. Wires removed during disassembly must be replaced on correct terminals to ensure proper grounding and polarization. removed during disassembly must be replaced on correct terminals to ensure proper grounding and polarization.

See Note below Service Test 1 – Defrost Thermostat & Defrost Circuit Test about alternate wiring of Refrigerator door harness When selected this test will display the state of the defrost thermostat. In order to perform this test the defrost heater will

Note: When energy switch is in the “Off” position the fresh food mullion heater is energized and when the be energized. The test is activated and deactivated using the Refrigerator Up key. Once activated, this test must be energy switch is in the “On” position the fresh food mullion heater is not powered. To avoid moisture from condensing on the fresh food mullion the energy switch should always be in the “Off” position. de-activated to move to another test number. The Freezer Up / Down keys allow selection of the test to be

performed.

This test also allows observation and measurement of proper defrost function. You can observe defrost heat and voltages

while the test is activated.

Freezer Refrigerator

1 O

DEFROST THERMOSTAT OPEN

Freezer Refrigerator

1 S

DEFROST THERMOSTAT SHORTED (CLOSED)

Service Test 2 – Compressor/Condenser Fan Test

When selected and activated this test will operate the Compressor/Condenser Fan circuit. You should evaluate proper

operation of the compressor and condenser fan. The Refrigerator Up key will toggle between “O” / “F” (ON & OFF)

the compressor drive circuit. The test must be “deactivated” or in the OFF position to move to another test selection.

Freezer Refrigerator

2 O

Freezer Refrigerator

2 F

OBSERVE COMPRESSOR & CONDENSER FAN FUNCTION

Service Test 3 – Evaporator/Freezer Fan Test

When selected and activated this test will operate the freezer fan. The Refrigerator Up key will toggle between “O” /

“F” (ON & OFF) the fan drive circuit. You will have to inspect the fan for proper function. The test must be “deactivated” or

in the OFF position to move to another test selection.

Freezer Refrigerator

3 O

Freezer Refrigerator

3 F

Note: In the event of excessive moisture on fresh food door mullion. The red and blue cabinet wires to door OBSERVE FAN OPERATION harness can be reversed to power fresh food door mullion heater continuously. This will help to reduce moisture on fresh food door mullion. See wiring alternate above for wiring in mullion heater for continuous operation. When powered continuously Energy Switch is no longer in heater circuit.

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© 2004 Maytag Services © 2004 Maytag Services

Service Specifications Service Specifications

! WARNING ! WARNING

To avoid risk of electrical shock that can cause death or severe personal injury, disconnect unit from power before To avoid risk of electrical shock that can cause death or severe personal injury, disconnect unit from power before servicing unless tests require power. Discharge capacitors through a 10,000-ohm resistor before handling. Wires servicing unless tests require power. Discharge capacitors through a 10,000-ohm resistor before handling. Wires removed during disassembly must be replaced on correct terminals to ensure proper grounding and polarization. removed during disassembly must be replaced on correct terminals to ensure proper grounding and polarization.

Service Test 4 – Fresh Food Thermistor Test Service Test 6 – Open Damper Test

When selected this test will indicate the current position “O” / “C” (OPEN / CLOSED) of the refrigerator damper. The

When selected and activated this test will display Pass, Open, Short result for a test on the Fresh Food Thermistor Refrigerator Up key will toggle the damper open and closed. You must allow 1 minute for each attempt to change

circuit as show below. The test is activated and de-activated via the Refrigerator Up key, and must be the damper position. You should observe proper damper function. de-activated to move to another test selection. Freezer Refrigerator

Freezer Refrigerator 6 O

4 P Freezer Refrigerator

PASS RESULT 6 C

Freezer Refrigerator OBSERVE DAMPER FUNCTION

4 O ! CAUTION

OPEN RESULT Adjustments of Service Test 7 or Service Test 8 will alter the performance of the unit.

Freezer Refrigerator Service Test 7 – FF Performance Adjustment

4 S This test will allow adjustment of the control performance points. Each step will incrementally change the Refrigerator performance warmer (towards 1) or colder towards (9) as adjusted. The default value is 5.

The refrigerator / Up/Down keys are used to adjust the Performance Offset value.

SHORT RESULT WARMER Í(1 2 3 4 (5) 6 7 8 9) Î COLDER.

Freezer Refrigerator

Service Test 5 – Freezer Thermistor Test 7 5

When selected this test will display Pass, Open, Short result for a test on the Freezer Thermistor circuit as

show below. The test is activated and de-activated via the Refrigerator Up key, and must be de-activated DEFAULT to move to another test selection. Freezer Refrigerator

Freezer Refrigerator 7 6

5 P COLDER The last FF Performance Offset value displayed before leaving test 7 will be saved when the refrigerator door(s) is PASS RESULT closed.

Freezer Refrigerator Service Test 8 – FZ Performance Adjustment

5 O This test will allow the adjustment of the control performance points. Each step will incrementally change the Freezer performance warmer (towards 1) or colder towards (9) as adjusted. The default value is 5.

The refrigerator / Up/Down keys are used to adjust the Performance Offset value.

OPEN RESULT WARMER Í(1 2 3 4 (5) 6 7 8 9) Î COLDER

Freezer Refrigerator

Freezer Refrigerator

5 S 8 5

DEFAULT

SHORT RESULT Freezer Refrigerator

8 4

WARMER The last FZ Performance Offset value displayed before leaving test 8 will be saved when the refrigerator door(s) is closed.

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© 2004 Maytag Services © 2004 Maytag Services