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Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect electric power to the tumbler before servicing.
• Close gas shut-off valve to gas tumbler before servicing.
• Close steam valve to steam tumbler before servicing.
• Never start the tumbler with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.
W002
WARNING
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
22. OM MODELS: NO DISPLAY AFTER SELECTING ONE OF THE ON/SELECT KEYS
120 Volt/60 Hertz/1 Phase Gas and Steam Nonreversing
208-240 Volt/60 Hertz/1 Phase Gas and Steam Nonreversing
208-240 Volt/60 Hertz/3 Phase Gas and Steam Reversing/Nonreversing
208-240 Volt/60 Hertz/3 Phase Electric Reversing/Nonreversing
460-480 Volt/60 Hertz/3 Phase Gas, Electric and Steam Reversing/Nonreversing
Step Problem
If No, then
1
Is there voltage across the primary of the transformer? If
yes, continue to next step.
Correct wiring between transformer and supply voltage.
Check fuses.
2
Is there 24 VAC across terminals 1 & 4 of transformers
secondary? If yes, continue to next step.
Replace transformer.
3
Is there 24 VAC across terminals H3-3 and H3-4 on the
micro control? If yes, continue to next step.
Correct wiring between H3 and transformer.
4
Is there voltage to the input of the fuse on the micro
control? If yes, continue to next step.
Replace micro control.
5
Is there voltage to the opposite side of the fuse on the
micro control? If yes, continue to next step.
Check fuse making sure it is not blown. Replace if
necessary.
6
Replace micro control.