Electrical Path Circuit Schematics
Start Circuit
Power travels into the machine on L1 & L2 & (L3) ( if 3 phase used). 208- 240VAC goes to a Control
Transformer ( must be checked at start -up to coincide with machine operating voltage) that steps the
voltage down to 115VAC for the controls. 115VAC then travels from the transformer out on [X-1 red wire
to the (fuse)] or [ X-1 blk/red wire] to TB-4 then to the red wire to the fuse, (fuse in fuseholder). X-2 Blk/
blu wire is the neutral side of the transformer.
From the Fuse holder, 115VAC travels on the red wire to the #5 terminal on the terminal strip and then
on the black wire to the Step-Down Transformer where it is stepped down to 2.3 VAC and 24 VAC that
proceeds to the P 7 connection to power the micro-controller PCB. The Door must be closed to satisfy
the door closed switch mounted on masking ring at front door. With data going out from front main PCB
on the black wire through door closed switch and red wire out of door closed switch and over to door
latched switch to await start button being pressed. Main PCB is satised and a 5 VDC signal is sent out of
P4 connection on the white/red to the S1 door switch. With the S1 door switch closed 5 VDC is now on
the red wire at the P4 connector of the micro-controlled PCB and a 115VAC signal will go to the Door Lock
Solenoid from the P17 connector of the Main Relay PCB on the white/red wire.The Door Lock Solenoid
pulls in, locking the door and closing the S2 and S3 Switches. The S2 Switch is a backup to the S1 Switch
so that the adjustment on S1 isn’t as critical. The S3 Switch provides 5 VDC on the org. wire back to P4
connector at micro-controlled PCB and P15 connector at the main relay PCB to know the loading door is
closed and locked. Org. wire @ P15 turns on the enable to the drive to allow motion. With no signal on
P15 (org. wire) their will be no motion of the tub.The black wire and white wire between Front controller
PCB P21 and the main relay PCB P 20 is where door lock data is supplied to indicate door closed and
locked to relay PCB and allows 120 volts to pass through relays to drain valve and water valves. The blue
wire from the terminal strip will provide the 115 VAC neutral for solenoid, thermoactuators and all valves
and the white wire from the terminal to the step down transformer.
Fill Circuit-Warm
S1, S2, and S3 Door Switches are now closed . The green On LED and the Door Lock Solenoid (discussed
in Start Circuit) will remain on throughout the cycle. The Lock Thermoactuator receives 115VAC on or-
ange/blue from P17 on main relay PCB and will alternate open and closed keeping the Lock Thermoactua-
tor activated until 1 1/2 minutes before the end of the cycle. At this point the contact opens and removes
power to the Lock Thermoactuator.The micro-controlled PCB also sends a signal to the main relay PCB
and out through P17. The brown/yellow wire from P17 at main relay PCB supplies 115VAC to Drain valve
which closes the valve. The reversing operation which will alternately provide the direction of tumble for
the wash basket will be given commands to the VFD through the data cables at P6 micro-controlled PCB.
The Prewash or Wash LED will illuminate at this time powered through the white wires from the micro-
control PCB P3 to LED printed circuit board.
Now with a cycle previously; we’ll use Normal Wash; the washer lls the tub through the back of the
machine with either one or both the C1 Cold and H1 Hot Water Valves. At the beginning of the wash cycle
bath only after a 90 sec. delay, the detergent dispenser ushes the detergent into the tub for 20 sec.. This
is accomplished when 120VAC travels through the red/orange wire to the H2 Hot Water Valve Solenoid.
As the washer lls with water, the Wash Basket will tumble one direction for 12 seconds, pause, and then
reverse direction for 12 seconds. 120VAC goes through the P19 connection of main relay PCB on wht/
brn to the C1 cold water valve and the red/yellow wire to the H1 hot water valve if programmed. When
the water reaches the predetermined level the Pressure Switch moves switch contacts to the full position
and shuts voltage o to the both water valves.Between red wire from P5 micro-controlled PCB on pressure
switch contact and yellow and orange wire from P5 micro-controlled PCB at other pressure switch contact
a 5 VDC reading will open.
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Part # 8533-075-001 6/22
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Part # 8533-075-001 6/22
Section 7:
Electrical
Wiring Diagrams &
Schematics
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