10.Timer
The dishwasher timer consists of a timer motor and a variety of switches that automatically controls every phase of the
dishwashers operation. The timer motor runs at a constant speed, like a clock. As it advances through the selected cycle,
the timer’s internal switches open and close in a precise sequence. When a preset period has elapsed, the timer opens the
switch again and shuts off the power to that component.
All outgoing wires from the timer are number-coded. By referring to the circuit diagram, you can trace the path of
electrical current from the timer to any component.
The timer is a very reliable mechanism. It is best to eliminate all other possible causes before attempting to test or
replace the timer.
PROCEDURE
Inspecting and replacing timer
Step 1: Be sure all controls are Step 2: This procedure requires the Step 3: To check timer motor, set the
turned OFF. Disconnect power removal of the outer casing. If you timer to the off position and check for
supply at distribution panel or are unfamiliar with this process, please continuity through the motor windings
unplug power cord from outlet. refer to procedure #7:Removing outer (approx. 2k ohms). If the windings are
Watch for sharp edges. Casing. open replace timer.
Step 4:Refer to dishwasher’s circuit
Diagram page 1 to see which contacts
close to activate a particular component.
(Example:4 to 4a close for drain pump)
Refer to the timing chart on page 14 to
determine when the individual contacts
close .
12
FRONT OF UNIT
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