The Refrigerator - Maytag MSD2559XEM Service Update Information

Service Diagnostics Mode (continued)
NOTE: This is an example of the information on the Technical Data Sheet shipped with

the refrigerator.

Switch Diagram
SW2
SW1 SW3
Press SW5 to advance to the next step in sequence.
Press SW4 to return to the previous step.
Step
Component
Number
Tested
Evaporator fan motor
3
and air baffle motor
Compressor and
4
Condenser Fan Motor
5
Does Not Apply
Defrost heater
6
and Bimetal
7 Defrost Mode
Important: If Bi-Metal is by-passed for testing. Do Not Overheat the Evaporator Area
8 All UI indicators
9 UI Button/Pad Test
10
Does Not Apply
11 Dispenser Lighting
12 Does Not Apply
Dispenser Housing
13
Heater Status
14
Does Not Apply
15
Does Not Apply
*Always refer to Service Sheet and Use and Care Manual for information specific to the refrigerator you are servicing.
Service Diagnostics - Cont.
SW5
SW6
SW4
Suggested Diagnostics Routine
Cooling system steps 1-7
Dispensing system steps 8-30
Verify air flow from evaporator fan. Check to see if
the air baffle opens and closes
Line voltage switched to compressor and condenser
fan from control board
This step is automatically by-passed
Line voltage switched to components from board,
verify heater operation. If Bimetal is open, it will need
to be by-passed for heater to operate.
The Defrost Mode can be activated by using SW3. In
the ADC Mode the refrigerator will automatically
defrost after a minimum of 8 hours of compressor run
time and up to maximum of 96 hours of compressor
run time, depending upon product usage. In Basic
Mode the product will automatically defrost after 8
hours of compressor runtime. The Defrost Mode must
be set to ADC ON before exiting the Service
Diagnostic Mode. Press SW5 to indicate the
completion of this step and to continue with the
dispenser service routine.
Dispensing System Steps 8-30
Verify that all LED indicators and UI digits turn on
automatically
Displays the User Interface Buttons and Ice and
Water Pads status as described in the Component
Status Indicator column.
Note: Do not use SW4 and SW5 as these are used
only to navigate through the Service Diagnostics.
This step is automatically by-passed
Pressing SW3 will change the dispenser light setting
from OFF(0%) to ON(100%) to DIM(50%)
This step is automatically by-passed
Displays the Dispenser Housing Heater status on the
UI display. Press SW3 to change status.
This step is automatically by-passed
This step is automatically by-passed
32
Step
Digit 1 Digit 2
Amber LED's
Status
Red LED's
Display Digits
Component Status Indicator
01=Fan On, Air Baffle open
02=Fan On, Air Baffle closed
01=ON
02=OFF
Does Not Apply
Blank= Waiting for validation
01= Bimetal Closed
02=Bimetal Open
01=ADC ON
02= Basic Mode ON - 8 hour Timer
All indicators ON
Digit 1 Digit 2 SW Pressed
1 Blank
SW 1
2 Blank
SW 2
3 Blank
SW 3
6 Blank
SW 6
Blank 1
Ice Pad
Blank 2
Water Pad
Ice
Blank 3
and Water
Does Not Apply
Blank
Does Not Apply
01=ON
02=OFF
Does Not Apply
Does Not Apply