Technical Data Sheet Amana Bottom Mount Refrigerator ABB1924DEB

2012-10-25

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Service Specifications

Bottom Mount RefrigeratorTechnical Information

WARNING

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
removed during disassembly must be replaced on correct terminals to ensure proper grounding and polarization.
3. Release the refrigerator door light switch.
4. The control will display Fd to confirm entry into the Forced Defrost Mode.
Freezer

ABB1924DEB ABB1924DEB0, ABB1924DEQ ABB1924DEQ0, ABB1924DEW ABB1924DEW0,
ABB1927DEB ABB1927DEB0, ABB1927DEQ ABB1927DEQ0, ABB1927DES ABB1927DES0,
ABB1927DEW ABB1927DEW0, ABB192ZDEB ABB192ZDEB0, ABB192ZDEQ ABB192ZDEQ0,
ABB192ZDEW ABB192ZDEW0, ABB222ZDEB ABB222ZDEB0, ABB222ZDEQ ABB222ZDEQ0,
ABB222ZDES ABB222ZDES0, ABB222ZDEW ABB222ZDEW0, ABB2527DEB ABB2527DEB0,
ABB2527DEQ ABB2527DEQ0, ABB2527DEW ABB2527DEW0, MBB1956HEB MBB1956HEB0,
MBB1956HEQ MBB1956HEQ0, MBB1956HES MBB1956HES0, MBB1956HEW MBB1956HEW0,
MBF1956HEB MBF1956HEB0, MBF1956HEQ MBF1956HEQ0, MBF1956HEW MBF1956HEW0
Due to a possibility of personal injury or property damage, always contact an authorized technician for
service or repair of this refrigerator.

Refrigerator

F
key once more. The unit is off and in the Defrost
5. Entry is confirmed by pressing the Refrigerator Down
Mode.
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
Freezer

All safety information must be followed as provided in Service Manual 16022769.

Refrigerator

S
Note: You can toggle between the (S)hort and (L)ong test mode by pressing the Refrigerator UP
Long Test mode is used for factory test and should not be used in the field.
Freezer

Key.

Refrigerator

down Key once.
7. Once the desired mode is displayed, confirm the forced defrost by pressing the Refrigerator
The defrost will begin immediately and the display will return to a normal operating display with set point values.
Refrigerator

Kw/24 hr ±0.4

8. Close the Refrigerator door(s). You are in the defrost mode
Note: Forced Defrost mode can be exited at any time prior to step 7 by closing the Refrigerator Door(s).

Ambient °F
19 cu ft

70°
.8

90°
1.4

110°
2.0

The service test functions are performed using the refrigerator display and keypad. Enter the Service Test Mode
by performing the following sequence of events

2. Press the Refrigerator Temperature Up

Ambient °F
19 cu ft

keypad 3 times consecutively.

Freezer Compartment
Average Food
Temperature ±3°F
70°
0

90°
0

110°
0

Evaporator
Outlet
±3°F
70°
90°
-20
-17

Evaporator
Inlet
±3°F
70°
90°
-20
-17

Suction Line
±7°F

Average Total
Wattage ±10%

70°
85

70°
120

90°
105

90°
125

Suction
Pressure
±2 PSIG
70°
0

90°
1

Head Pressure
± 5 PSIG
70°
83

Schematic

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

No-Load Performance, Controls in Normal Position
Refrigerator Center
Compartment
Average Food
Percent Run Time
Cycles/24 hr
Temperature ±3°F
±10%
±25%
70° 90°
110°
70°
90°
110°
70°
90°
110°
26
45
60
40
35
25
38
36
35

Temperature Relationship Test Chart

Service Test Mode:
1. Hold the refrigerator door light switch closed.

WARNING

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
removed during disassembly must be replaced on correct terminals to ensure proper grounding and polarization.

Freezer

CAUTION

Refrigerator

5. Entry to the Service Menu is confirmed by pressing the Refrigerator Up
6. The control will display its software version for 3 seconds.
Freezer

key once more.

Refrigerator

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).
April 2004
© 2004 Maytag Services

16023096

April 2004
© 2004 Maytag Services

16023096

90°
135

Component Specifications

Service Specifications

WARNING

Programming Mode:
Component

Specifications all parts
115VAC/60HZ unless noted

Compressor run capacitor

Volt..................................................... 220 VAC
Capacitance ...................................... 15 µfd ± 10%
BTUH ................................................. 730 BTUH
Watt ................................................... 60 Hz / 125 watts
Current Lock rotor .............................. 19.0 amps± 15%
Current Full load ................................ 1.09 amps± 15%
Resistance Run windings .................. 3.33 ohms± 15%
Resistance Start windings ................. 4.28 ohms± 15%

Compressor

Note: The Program Code is located on the Serial Plate on this unit after the word Code.

Electric damper control

Maximum closing time
Temperature Rating
RPM

36 seconds
20°F- 110°F
1

Thermistor

Temperature
77°F....................................................
36°F ...................................................
0°F......................................................

Resistance
10,000 ohms
29,500 ohms
86,300 ohms

Rotation (facing end opposite shaft)
RPM
Watt....................................................
Current ...............................................

Clockwise
1250 RPM
8.0 watts±15%@115VAC
0.10 amps± 15%@115VAC

Evaporator fan motor

Rotation (facing end opposite shaft)
RPM……………………………………
Watt…………………………………….

Clockwise
2800 RPM
5.9 ±15% watts@115VAC

Overload/Relay

Ult. trip amps @ 158°F (70°C) ...........
Close temperature ...........................
Open temperature............................
Short time trip (seconds)....................
Short time trip (amps @77°F (25°C)..
Volt.....................................................
See Control Board section for
diagnostics
Volt ....................................................
Watt ...................................................
Current ...............................................
Resistance across terminals:
Above 42°F ±5°..................................
Below 12°F ±7° ..................................
Volt.....................................................
Wattage..............................................
Resistance .........................................

2.67 amps± 15%
142°F ±16°
284°F ±9°
10 seconds ±5
11 amps ±2amps
120VAC, 60 HZ

Condenser motor

1. Open the Fresh Food door and hold the Fresh Food door light switch closed while pushing the Freezer
Temperature Down
Key pad 3 times consecutively.
Note: The 3 Keystrokes must be done consecutively and within 10 seconds.
2. Release the Fresh Food door light switch.
3. The control will display PE to confirm entry into the programming mode.
Freezer

Refrigerator

4. Entry is confirmed by pressing the Freezer Down

Note: All control functions will be turned off (Compressor, Defrost, Evaporator Fan, the damper will
remain in its current position)
5. The control will display the current Program Code. This value should be validated with the Program Code
printed on the unit serial plate.
Freezer

Refrigerator

Control board

Thermostat (Defrost)

Evaporator heater

The Programming mode can be exited at any time by closing the Refrigerator Door(s).

Defrost Operation:

Open
Closed
115 VAC
350 ±5% watts @ 115VAC
29 ±5% ohms

Type…………………………………….. SPST NC
Volt……………………………………… 125/250 VAC
Current………………………………….. 8 / 6 amps

Light switch / Interlock

Type…………………………………….. SPDT NO/NC
Volt……………………………………… 125/250 VAC
Current………………………………….. 5 / 2.5 amps

Note: If the Program Code is correct, the Programming Mode is exited by closing the Refrigerator door(s).
6. To set the desired Program Code number press the Freezer and Refrigerator UP
keys. The
corresponding digit will be advanced with each key press.
7. Once the desired Program Code is displayed, press the Freezer DOWN
Key until the Program Code
begins flashing indicating it has been saved.
Note: If you attempt to enter an invalid Program Code the control will not save the new code, but will flash the old
code and this will be displayed. (The unit will NOT run with a Program Code of 00).
8. Once the Program Code has been saved the Programming Mode is exited by closing the Refrigerator
door(s). If the new code is incorrect this process should be repeated after closing the Refrigerator door(s).

120/240 VAC
495 watts
10/5 amps

Light switch

key once more.

The Control Board adapts the compressor run time between defrosts to achieve optimum defrost intervals by
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.
Note: Once unit is ready to defrost there is a 4 minute wait time prior to the beginning of the defrost cycle.
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
interval 1 hr. When defrost thermostat opens there is a 4-6 minute drip time before compressor restarts or Control
Board will terminate defrost at 25 minutes if defrost thermostat has not opened and will reset the defrost interval to the
8 hr. minimum setting.
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.

Forced Defrost Mode:
The forced defrost function is performed using the refrigerator display and keypad. Enter the Forced Defrost
Mode by performing the following sequence of events:
1. Hold the refrigerator door light switch closed.
2. Press the Refrigerator Temperature Down
keypad 3 times consecutively.
Note: The 3 keystrokes must be consecutive and within 10 seconds.
April 2004
© 2004 Maytag Services

16023096

April 2004
© 2004 Maytag Services

16023096

Wiring Diagram

Service Specifications

WARNING

Service Test 1 – Defrost Thermostat & Defrost Circuit Test
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

DEFROST THERMOSTAT OPEN
Freezer

Refrigerator

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

Freezer

Refrigerator

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.
Refrigerator

Freezer

3
Freezer

Refrigerator

OBSERVE FAN OPERATION

16023096

Service Specifications

WARNING

Service Test 6 – Open Damper Test
Service Test 4 – Fresh Food Thermistor Test
When selected and activated this test will display Pass, Open, Short result for a test on the Fresh Food Thermistor
circuit as 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.
Freezer

When selected this test will indicate the current position “O” / “C” (OPEN / CLOSED) of the refrigerator damper. The
Refrigerator Up
key will toggle the damper open and closed. You must allow 1 minute for each attempt to change
the damper position. You should observe proper damper function.
Freezer

Refrigerator

! CAUTION
Adjustments of Service Test 7 or Service Test 8 will alter the performance of the unit.

OPEN RESULT

Service Test 7 – FF Performance Adjustment
Refrigerator

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.

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.

SHORT RESULT

Freezer

Service Test 5 – Freezer Thermistor Test

DEFAULT

Service Test 8 – FZ Performance Adjustment

Refrigerator

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

O
OPEN RESULT

Freezer

Refrigerator

5
DEFAULT

Freezer

Refrigerator

S
SHORT RESULT

April 2004

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

PASS RESULT

Refrigerator

Freezer

Refrigerator

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
to move to another test selection.
Freezer

OBSERVE DAMPER FUNCTION

Freezer

Refrigerator

Freezer

PASS RESULT
Freezer

Refrigerator

16023096

Refrigerator

WARMER
The last FZ Performance Offset value displayed before leaving test 8 will be saved when the refrigerator door(s) is
closed.
April 2004
7
16023096
© 2004 Maytag Services

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Modify Date                     : 2004:04:12 09:13:00-04:00
Create Date                     : 2004:04:12 09:12:13-05:00
Page Count                      : 4
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Mod Date                        : 2004:04:12 14:12:13Z
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Metadata Date                   : 2004:04:12 14:12:13Z
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Title                           : Technical Data Sheet
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Technical Data Sheet Amana Bottom Mount Refrigerator ABB1924DEB

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