tech-sheet-12827911
Control Board Troubleshooting 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 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 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 Mode. removed during disassembly must be replaced on correct terminals to ensure proper grounding and polarization.

Note: All control functions will be turned off (Compressor, Defrost, Evaporator Fan, the damper will

remain in its current position)

6. The control will default to the short run period test as shown here No-Load Performance, Controls in Normal Position

Freezer Refrigerator

S Refrigerator Center Freezer Compartment

Note: You can toggle between the (S)hort and (L)ong test mode by pressing the Refrigerator UP Key. Kw/24 hr ±0.4 Percent Run Time Cycles/24 hr Compartment Average Food ±10% ±25% Temperature ±3°F Average Food 70° 90° 110° 70° 90° 110° Temperature ±3°F

Long Test mode is used for factory test and should not be used in the field. Ambient °F 70° 90° 110° 70° 90° 110° 70° 90° 110° 25 cu ft 1.0 1.60 2.3 0 Freezer Refrigerator

28 48 65 35 39 25 38 36 35 0 0

L

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

4 4 Ambient °F 70° 90° 70° 90° 70° 90° 70° 90° 70° 90° 70° 90° 25 cu ft 8. Close the Refrigerator door(s). You are in the defrost mode -20 -17 -20 -17 85 105 125 130 6″(Vac.) 0 87 137 Note: Forced Defrost mode can be exited at any time prior to step 7 by closing the Refrigerator Door(s). Schematic Service Test Mode:

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.

4. The control will display SE to confirm entry into the service mode.

Freezer Refrigerator

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 Control Board Troubleshooting

! 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:

Part Number Component Specifications all parts Note: The Program Code is located on the Serial Plate on this unit after the word Code. 115VAC/60HZ unless noted C8931612 Compressor run capacitor 210/220 VAC 1.Open the Fresh Food door and hold the Fresh Food door light switch closed while pushing the Freezer Volt …………………………………………….. Capacitance ………………………………… 15 µfd ± 10% Temperature Down Key pad 3 times consecutively.

67003762 Compressor BTUH ………………………………………….. 730 BTUH Watt …………………………………………… 60 Hz / 168 watts Current Lock rotor…………………………. 19.0 amps± 15% Note: The 3 Keystrokes must be done consecutively and within 10 seconds. Current Full load …………………………… 1.09 amps± 15% Resistance Run windings ………………. 3.33 ohms± 15% 2.Release the Fresh Food door light switch. Resistance Start windings ……………… 4.28 ohms± 15% 3.The control will display PE to confirm entry into the programming mode. Maximum closing time 36 seconds Temperature Rating 20°F- 110°F Freezer Refrigerator RPM 1 67003903 Electric damper control P E

12002339 Control board Volt …………………………………………….. 120VAC, 60 HZ 4.Entry is confirmed by pressing the Freezer Down key once more. See Control Board section for diagnostics Note: All control functions will be turned off (Compressor, Defrost, Evaporator Fan, the damper will remain in its current position)

12023555 Thermistor Temperature Resistance 5.The control will display the current Program Code. This value should be validated with the Program Code 77°F ……………………………………………. 10,000 ohms printed on the unit serial plate. 36°F …………………………………………… 29,500 ohms 0°F ……………………………………………… 86,300 ohms Freezer Refrigerator

R0131583 Condenser motor Rotation (facing end opposite shaft) Clockwise 2 5 RPM 1250 RPM 4.2 watts±15%@115VAC Note: If the Program Code is correct, the Programming Mode is exited by closing the Refrigerator door(s). Watt ……………………………………………. 0.63 amps± 15%@115VAC Current…………………………………………

67003917 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 67003764 Overload/Relay RPM…………………………………… 2940 RPM corresponding digit will be advanced with each key press. Watt……………………………………. 4.6 ±15% watts@115VAC 7.Once the desired Program Code is displayed, press the Freezer DOWN Key until the Program Code Ult. trip amps @ 158°F (70°C)………… 2.67 amps± 15% Close temperature ………………………. 142°F ±16° begins flashing indicating it has been saved. Open temperature ………………………. 284°F ±9° 10 seconds ±5 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) ……………….. 11 amps ±2amps 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). 120/240 VAC Volt ……………………………………………. 495 watts 8. Once the Program Code has been saved the Programming Mode is exited by closing the Refrigerator Watt …………………………………………… 10/5 amps R0131454 Thermostat (Defrost) Current………………………………………… door(s). If the new code is incorrect this process should be repeated after closing the Refrigerator door(s). Resistance across terminals: Open Above 42°F ±5° ……………………………. Closed The Programming mode can be exited at any time by closing the Refrigerator Door(s). Below 12°F ±7°…………………………….. 67003818 Water valve, dual 120 VAC Defrost Operation: 67002493 Evaporator heater Volt 35 watts (Brown coil) Watt 20 watts (Yellow coil) The Control Board adapts the compressor run time between defrosts to achieve optimum defrost intervals by 115 VAC monitoring the length of time the defrost heater is on. Volt …………………………………………….. 470 ±5% watts @ 115VAC After initial power up, defrost interval is 4 hours compressor run time. Defrost occurs immediately after the 4 hours. Wattage ………………………………………. Note: Once unit is ready to defrost there is a 4 minute wait time prior to the beginning of the defrost cycle. Resistance…………………………………… 29 ±5% ohms Optimum defrost is 15 minutes. Each additional minute the defrost thermostat remains closed, 1 hr. is subtracted from the previous defrost interval. Each minute the thermostat opens prior to optimum defrost, it extends the next defrost 67002717(BLK) Mullion Assembly w/ Heater Volt……………………………………… 120 VAC interval 1 hr. When defrost thermostat opens there is a 4-6 minute drip time before compressor restarts or Control 67002718(BSQ) Wattage ………………………………………. 10±.5 watts @ 120VAC Board will terminate defrost at 25 minutes if defrost thermostat has not opened and will reset the defrost interval to the 67002719 (G) Resistance…………………………………… 1440 ±5% ohms 8 hr. minimum setting. 67002720 (W) Resistance checked at leads at center of hinged 4 hours of continuous compressor run resets the next defrost interval to 8 hours and will initiate a defrost, if 8 hours of side of Fresh Food door. compressor run time has also occurred. 67003940 Energy Saver Switch Type…………………………………….. SPST C3680310 125/250 VAC Volt……………………………………… 16 / 8 amps

Note: Switch should always Current………………………………….. SPST NC Forced Defrost Mode: 125/250 VAC be in the on position to control 8 / 6 amps The forced defrost function is performed using the refrigerator display and keypad. Enter the Forced Defrost Mode by performing the following sequence of events: sweat on the vertical mullion

Light switch Type……………………………………..

Volt……………………………………… 1. Hold the refrigerator door light switch closed.

Current…………………………………..

12466101 Light switch / Interlock Type…………………………………….. SPDT NO/NC 2. Press the Refrigerator Temperature Down keypad 3 times consecutively. Volt……………………………………… 125/250 VAC Current………………………………….. 8 / 6 amps Note: The 3 keystrokes must be consecutive and within 10 seconds.

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Wiring Diagram Control Board Troubleshooting

! 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

be energized. The test is activated and deactivated using the Refrigerator Up key. Once activated, this test must be

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

128615 01 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.

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Control Board Troubleshooting Control Board Troubleshooting

! 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 6 – Open Damper Test

Service Test 4 – Fresh Food Thermistor 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 the

circuit as show below. The test is activated and de-activated via the Refrigerator Up key, and must be 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 1° (towards 1) or colder 1° towards (9) as adjusted. The default value is 5.

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

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

Service Test 5 – Freezer Thermistor Test Freezer Refrigerator

When selected this test will display Pass, Open, Short result for a test on the Freezer Thermistor circuit as 7 5

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

Freezer Refrigerator Freezer Refrigerator

5 P 7 6

PASS RESULT COLDER The last FF Performance Offset value displayed before leaving test 7 will be saved when the refrigerator door(s) is 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 1° (towards 1) or colder 1° 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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