Central Control Unit (Ccu); Motor Gontrol Unit (Mcu); Drive Motor - Kenmore 110.42822200 User Manual

Central Control Unit (CCU)
The Central Control Unit is located at the top rear of the
washer and is enclosed in a control box. (Fig. 2-1 1) There are
no serviceable parts inside the control box. lf diagnostic tests
indicate any component of the CCU is defective, the entire
control box must be replaced.
The CCU receives input lrom the touchpad/LED
assembly
and directly controls the dispenser, drain pump, water inlet
valves, door locking and unlocking solenoids, and heating
element relay. The CCU monitors the pressure switch, flow-
meter, temperature sensor and door lock switches.
The CCU sends the customer selection input to the Motor
Control Unit for proper motor operation.
Motor Gontrol Unit (MCU)
The Motor Control Unit is located is inside a plastic control
box located in the lower front corner of the washer cabinet.
(Fig. 2-12) The control box is shown with the access door
open.
The MCU operates the drive motor at varying speeds and
direction based on inputs received by the CCU to complete
the cycle selected. The MCU also monitors a tachomeler
on the motor to confirm that the drive motor is operating at
the proper speed and direction.
Drive Motor
The drive motor is a three-phase asynchronous induction
type that operates at various speeds and direction based on
input voltages and frequencies. A tachometer on the motor
shaft sends a feedback signal to the Motor Control Unit indi-
cating the rotation speed and direction.
Fig. 2-11
Fig.2-12
Fig.2-13
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