Not defrosting

Here is the diagnostics. See video link below…https://www.appliancevideo.com/maytag-mf12665xeb0-refrigerator-repair-has-ice-buildup-in-freezer-drain-grommet/
Control board Troubleshooting
Programming Mode:
NOTE: The Program Code is located on the Serial Plate on this unit after the word Code.
1. Press and hold the Door Alarm Keypad.
2. Press and hold Freezer Temperature DOWN /- Keypad within 3 seconds.
3. Release the Door Alarm Keypad and wait 3 seconds.
4. The control will display PE to indicate the programming mode.
5. Entry is confirmed by pressing the Freezer Temperature DOWN /- Keypad once more.
6. The control will display the current Program CODE. This value should be validated with theProgram CODE printed on the unit serial plate.
NOTE: If the Program CODE is correct, the Programming Mode is exited by pressing Door Alarm Keypad for 3 seconds.
7. Press the Refrigerator Temperature UP /+ Keypad or Refrigerator Temperature DOWN /- Keypad to change the digit value with each key press.
8. The decimal point indicates the selected digit. Press the Freezer Temperature UP /+ Keypad to select the next digit.
9. Once the desired Program CODE is entered, press and hold the Freezer Temperature DOWN /- Keypad 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 beep. (The unit will NOT run with a Program
CODE of 0000).Once the Program CODE has been saved the Programming Mode is exited by pressing any key. If the new code is incorrect this
process should be repeated.
The Programming mode can be exited at any time by pressing Door Alarm key for 3 seconds or will exit if unattended for four minutes.
Defrost Operation:
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.
Forced Defrost Mode:
The forced defrost function is performed using the Freezer display and Refrigerator keypad. Enter the Forced Defrost Mode by performing the
following sequence of events:
1. Press and hold the Door Alarm Keypad .
2. Press and hold Refrigerator Temperature DOWN /- Keypad.
3. Release the Door Alarm Keypad and wait 3 seconds. Fd appears in Freezer display.
4. Press the Refrigerator Temperature DOWN /- Keypad again. Sh appears in right display.
5. Press again to force defrost Fd and Sh will flash in display indicating unit is in defrost.
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. Press and hold the Door Alarm Keypad.
2. Press and hold Refrigerator Temperature UP / + Keypad.
3. Release the Door Alarm Keypad and wait 3 seconds.
4. The Freezer display will display SE confirming entry in the Service Mode.
5. Press the Refrigerator Temperature UP /+ Keypad again to confirm entry in the Service Mode.
6. Display will show 101 in left display and numeric or dashes in right display.
7. Press Freezer Refrigerator Temperature UP / + Keypad and Freezer DOWN /- Keypad to toggle through Service Test numbers.
8. To exit service test mode, open and close refrigerator door or hold door alarm for 3 seconds.
Service Test – 101 Defrost Heater & Defrost Circuit
• Press the Refrigerator Temperature UP /+ keypad and Refrigerator DOWN /- keypad to energize or de-energize the Defrost circuit. The
display will read OFF when de-energized, OP when energized with open defrost thermostat and CL when energized with closed defrost thermostat.
Service Test – 102 Compressor / Condenser Fan
• Press the Refrigerator Temperature UP /+ keypad and Refrigerator DOWN /- keypad to toggle Compressor/Condenser fan On and Off.
Service Test – 112 Freezer Fan
• Press the Refrigerator Temperature UP /+ keypad and Refrigerator DOWN /- keypad to toggle Freezer Fan On High speed, Low speed and Off.
NOTE: Display will show state 0.0 for OFF, 11.0-14.0 volts for High speed or 7.75- 8.25 volts for Low speed.
Service Test – 113 Ice Compartment Fan
• Press the Refrigerator Temperature UP /+ keypad and Refrigerator DOWN /- keypad to toggle Ice compartment Fan On High speed, Low
speed and Off.
NOTE: Display will show state 0.0 for OFF, 11.0-14.0 volts for High speed or 7.75- 8.25 volts for Low speed.
Service Test – 121 Damper Operation
• Press the Refrigerator Temperature UP/+ keypad and DOWN /- keypad to toggle Damper OP open and CL closed.
NOTE: If damper is opening or closing it will not allow you to toggle damper and beep. Display will show state –CL or –OP if Damper is in the
process of closing or opening.
Service Test – 131 Mullion Heater
• Press the Refrigerator Temperature UP/+ keypad and DOWN /- Keypad to toggle Mullion Heater Off and On.
Service Test – 141 Fresh Food Thermistor
• Will Show Fresh Food Temperature or OP for open thermistor or SH for shorted thermistor.
Service Test – 142 Freezer Thermistor
• Will Show Freezer Temperature or OP for open thermistor or SH for shorted thermistor.
Service Test – 144 Ambient Thermistor
• Will Show AmbientTemperature or, OP open thermistor or SH shorted thermistor.
Service Test – 145 Ice Box Thermistor
• Will Show Ice BoxTemperature or, OP open thermistor or SH shorted thermistor.
Service Test – 151 Fresh Food Door State
• Will show state of Fresh Food Door. OP (open) CL (closed).
NOTE: By pushing either Fresh Food Door switches you can toggle state from OP (open) to CL (closed).
Service Test – 152 Freezer Food Door State
• Will show state of Freezer Door. OP (open) CL (closed).
NOTE: By pushing Freezer Door Switch you can toggle state from OP (open) to CL (closed).
Service Test – 153 Disable Internal Lights
• Press the Refrigerator Temperature UP/+ keypad and DOWN /- keypad to toggle Enable En and Disable dIS internal lights.
Service Test – 163 Water Dispenser
• Display shows the state of the Water Dispenser Valve (On or OFF).
NOTE: By pushing Actuator pad or Front Fill you can control state of Water Dispenser Valve.
Service Test – 164 External Ice Chute Door
• Display shows the state of the External Ice Chute Door CL (closed) or OP (open).
NOTE: By pushing Actuator pad you can control state of External Ice Chute Door.
Service Test – 165 Dispenser Lamp
• Display shows the state of the Dispenser Lamp (On or OFF).
NOTE: By pushing Actuator pad or Front Fill you can control state of dispenser lamp.
Service Test – 167 Cavity Heater Test (On some models)
• Toggles the state of the Cavity Heater On or OFF.
NOTE: Pushing Refrigerator Temperature UP/+ keypad and DOWN /- keypad toggles the cavity heaters state to On or OFF
Service Test – 168 Cube Dispenser and Internal Ice Chute Door Operation
• Display shows the state of the ice auger motor and the internal ice chute door. (On or OFF)
NOTE: By pushing actuator pad you can control state of the Ice auger motor and the internal ice chute door.
Service Test – 171 Actuator Pad
• Display shows the state of the Actuator Pad (On or OFF).
Service Test – 172 Front Fill (On some models)
• Display shows the state of the Front Fill (On or OFF).
Service Test – 173 Ambient Light
• Display shows light sensor measurement (Hi or Lo). Night light will turn on when light sensor measures Lo.
By changing the sensor’s exposure to ambient light you can control the sensor measurement.
Service Test – 175 Dispenser Line
• Display shows the state of the Dispenser Line (On or OFF).
NOTE: By pushing Actuator pad or Front Fill you can change state of Dispenser Line.
Service Test – 182 LED Indicator Operation
• Press the Refrigerator Temperature UP/+ keypad and DOWN /- Keypad to show operation of LED Indicators. All LED Indicators will flash.
Press again and LED will stop flashing.
Service Test – 183 Keypad Operation
• Display shows a numeric or letter display indicating the last key pressed.
NOTE: Refrigerator Temperature UP/DOWN keypads have no effect when pressed and Freezer Temperature UP/DOWN keypads remain operational.
Service Test – 192 Ice Maker State Test
• Display shows dr if left fresh food door switch is in the door open position.
• Display shows OFF if ice maker power switch is in the off position and door closed.
• Display shows On if the ice maker power switch is in the on position and the door closed and heater is off.
• Display shows OnH if icemaker power switch is in the on position and harvest heater is on and door closed.
Service Test – 193 Ice Maker Relay
• Press the Refrigerator Temperature UP/ + Keypad or Refrigerator DOWN /- Keypad to toggle the ice maker relay On and OFF.
NOTE: Service tests 201-213 modifies factory settings to suit customers needs.
Service Test – 201 Mullion Heater Override
• Press the Refrigerator Temperature UP /+ Keypad or Refrigerator DOWN /- Keypad to change Mullion Heater from cycling on with
compressor (OFF position) to 100% operation (On Position).
NOTE: If present, the Humidity Control Button toggles between the selected Mullion Heater Function and 0% operation.
Service Test – 202 Default Defrost Operation
• Press the Refrigerator Temperature UP /+ Keypad or Refrigerator DOWN /- Keypad to change Defrost Operation from normal adaptive defrost
(Off position) to minimum time between defrosts (On position).
Service Test – 203 Show Temperature Set points
• Press the Refrigerator Temperature UP /+ Keypad or Refrigerator DOWN /- Keypad to change from showing actual temperature (Off position)
to show temperature set points only (On position).
Service Test – 211 Fresh Food Temperature Adjustment
• Press the Refrigerator Temperature UP /+ Keypad or Refrigerator DOWN /- Keypad to change calibration of Fresh Food Temperature plus or
minus in 1°F increments up to 6°F.
NOTE: Temperature will read in Fahrenheit regardless of what current temperature scale is being used.
Service Test – 212 Freezer Temperature Adjustment
• Press the Refrigerator Temperature UP /+ Keypad or Refrigerator DOWN /- Keypad to change calibration of Freezer Temperature plus or
minus 1°F in increments up to 6°F.
NOTE: Temperature will read in Fahrenheit regardless of what current temperature scale is being used.
Service Test – 213 Ice Compartment Temperature Adjustment
• Press the Refrigerator Temperature UP /+ Keypad or Refrigerator DOWN /- Keypad to change calibration of Ice Compartment Temperature
plus or minus 1°F in increments up to + 0 / + 8°F.
NOTE: Temperature will read in Fahrenheit regardless of what current temperature scale is being used.
Service Test – 221 Reset Default Settings
• Press the Refrigerator Temperature UP /+ Keypad or Refrigerator DOWN /- Keypad to reset to factory default settings (dEF).
Service Test – 231 Water Filter Usage
• Display shows the percent water filter consumption since water filter was reset. 100% indicates the filter should be replaced.
Service Test – 232 Water Filter Days In Use
• Display shows the number of days since the water filter was reset.
Service Test – 241 Software Revision Main Control Board
• Display shows the Software revision of the Main Control Board.
Service Test – 244 Software Revision Display Board
• Display shows the Software revision of the Display Board.
NOTE: Service tests 3XX and above are Reserved for Engineering Use Only.