• Please note, some of the links on our site are affiliate links (Learn More)

GTUN275GM1WW GE Stackable washer/dryer with Blocked Motor error code

RomanRepairs

Premium Member
Joined
Jan 13, 2021
Messages
2
Location
Maryland
Model Number
GTUN275GM1WW
Brand
GE
Age
1-5 years
GE washer dryer stacked combo unit Model # GTUN275GM1WW, Manu January 2017
Installed on the second floor, hallway closet, apparently lifted onto rear deck and moved to core of 2nd floor as the inside stairs are not wide enough to remove. Property is high grade rental in Canton
We have maintained the property for about 2 years or so. Unit has been working fine until a week or so ago
Tenant complained that unit was filling with water but not spinning or agitating.
Checked all the codes, changed lid switch as a quick fix, no change
Then I noticed a blocked motor error code
Checked the lid lock, fill valves, pump, drum to agitator clearance to make sure no jamming there, belt good, transmission gears and wax motor actuate but no initiation of spin or wash mode.
Removed the motor, tested in under power and it runs smooth. No pulley magnet damage. Replaced the motor speed sensor as a precaution.
Still getting blocked motor error code. Basically no change in operation. No error codes for control board.
 

rickgburton

Appliance Tech - Moderator
Staff member
Joined
Jul 11, 2006
Messages
41,156
Location
Murray, Utah 84107, United States
Still getting blocked motor error code.
Blocked Motor
• This error code is triggered by feedback from the motor Hall sensor.
• If the control does not receive pulses from the motor Hall sensor, this code will be entered into memory.
• The washer will enter a pause state and the user can attempt to restart the cycle.
• This code will not be displayed to the consumer.

The speed sensor in the motor operates on a 10 VDC signal from the control board. The control board reads the pulses from the motor to determine proper operation. This signal cannot be read with a conventional multimeter while operating. A faulty speed sensor circuit will generate a diagnostic error code. To test the speed sensor, disconnect the sensor harness from the control and read AC millivolts on the sensor harness while rotating the spin basket counterclockwise (CCW).

The washer motor is a variable-speed reversible motor. 120 VAC line power is supplied by the main board on J7 pin 2. Neutral is switched for both clockwise (CW) and counterclockwise (CCW) windings from J1 pins 1 and 2. The motor has an internal Hall sensor that reports rpm information back to the control. Rpm feedback is a digital signal of 10 VDC on J5-1 and J5-2.
ge-kit-motor-and-wh49x20495-ap5953898_01_m.jpg
 

RomanRepairs

Premium Member
Joined
Jan 13, 2021
Messages
2
Location
Maryland
Rick,
The external speed sensor was replaced as a precaution. It will be tested to make sure. Are you saying the motor's internal Hall Sensor could be faulty?
I will test again the voltage to motor from the control J7 J1 pins, also Hall sensor rpm feedback of 10VDC to the control #J5 1&2 pins. Should I assume if no signal feedback form internal Hall sensor at control J5 1&2 then Motor is faulty? Motor was removed and bench tested under power.
Thanks
 

rickgburton

Appliance Tech - Moderator
Staff member
Joined
Jul 11, 2006
Messages
41,156
Location
Murray, Utah 84107, United States
Are you saying the motor's internal Hall Sensor could be faulty?
This error code is triggered by feedback from the motor Hall sensor.
The error "blocked motor" is caused by the motors hall sensor

voltage to motor from the control J7 J1 pins,
120 VAC line power is supplied by the main board on J7 pin 2.

10VDC to the control #J5 1&2 pins.
Correct. If to have supply voltage to the motor replace the motor.
 

rickgburton

Appliance Tech - Moderator
Staff member
Joined
Jul 11, 2006
Messages
41,156
Location
Murray, Utah 84107, United States
Top