KitchenAid Pro Line KHWV01RSS Technical Education page 22

CONTROL ASSEMBLY
(TOUCHPAD/LED BOARD)
The Touchpad/LED board is part of the control
assembly. It is connected to the Central Control
Unit by a cable. This interfaces the consumer
inputs to the Central Control Unit.
CENTRAL CONTROL UNIT (CCU)
The Central Control Unit is located at the top
rear of the washer and is enclosed in a control
box. There are no serviceable parts inside the
control box. If diagnostic tests indicate any
component of the CCU is defective, the entire
control box must be replaced.
The CCU receives input from the touchpad/
LED board 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,
flowmeter, temperature sensor and door lock
switches.
The CCU sends the customer selection input
to the Motor Control Unit for proper motor op-
eration.
Central Control Unit
MOTOR CONTROL UNIT (MCU)
The Motor Control Unit is located inside a plastic
control box located in the lower front corner of
the washer cabinet. 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 tachometer on the motor
to confirm that the drive motor is operating at
the proper speed and direction.
Motor Control Unit
DRIVE MOTOR
The drive motor is a three-phase asynchro-
nous 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 indicating the rotation speed and
direction.
3-4
Drive Motor