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Laundry Installation and Setup Guide
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Installing LWI3020 in Alliance/Speed Queen Laundry Machines
Alliance/Speed Queen laundry machines require an LWI3020. A single LWI3020 supports both single washer/dryer
machines and stacked dryer machines. Before installing an LWI3020, verify that the transformer in the machine is the
correct type. The transformer should have 4 red wires on the secondary side. If there are only 2 wires, then the
transformer must be replaced.
If the 4th alphanumeric digit is A,C, D, F, H, J, L, X, or Y you have the correct dual transformer. If the 4th
alphanumeric digit is B, T, or Z, you must have the existing transformer replaced. The correct transformer
can be ordered from Alliance Laundry Systems or through your laundry supplier. The correct transformer
part number is 201375P.
Disconnect all power to the machine.
1
Remove the operator console (with display and switches) from the machine. For single machines, remove only the
top two screws.
2
With access to the machine’s control board, install the 4-pin connector of the wiring harness labeled “Odd
Numbered Machine” onto the (H5) connector of the laundry machine’s control board. The H5 connector may be
either 4 or 7 pin. If the connector has 7 pins, the connector must be installed on pins 1 through 4.
When installing the LWI3020 into a stacked machine, the connector identified with label “Even Numbered Machine”
must be installed into the control board of the even-numbered machine. For example, if the stacked machine is
assigned machines 3 and 4 within the laundry center, then the connector would be installed in the control board
identified as machine 3 and the other connector would be installed in the control board of the machine identified as
machine 4.
3
Install the 2-Molex pins connected to the RED and RED wires on the wiring harness into the two open positions of
the transformer’s secondary output connector. It is an AC output, therefore the pins are interchangeable (see
