Alliance Laundry Systems BU170S Service Manual download pdf (Page 14)

70422201R1

Introduction

Modes of Operation

Power-Up Mode

Sends power to control, begins a status check

of the system. Can send control into Idle Mode

or Lockout Mode.

Idle Mode

Machine is operable while it monitors

temperature sensor readings. Control will enter

Power Disconnect Mode if temperature

trip-point is exceeded.

Power Disconnect Mode

Machine is disabled and controls on front will not

operate, will enter Power Disconnect Mode for one

second, then Water On Mode.

Water On Mode

Machine is disabled and controls on front will not operate. Remain in this mode

for 90 seconds, then enter Lockout Mode. Can enter Lockout Error Mode if both

temperature sensors become open, which occurs when temperature is below

40° F (4° C). Will enter Idle Mode if reset button is pressed. Refer to

Figure 2.

Lockout Mode

Machine is disabled and controls on front will not

operate. Control monitors temperature readings. Enters

Water On Mode if temperature trip-point is exceeded.

Will enter Idle Mode if reset button is pressed.

Lockout Error Mode

Machine is disabled and controls on front will not

operate. Water dispenses for four minutes. When the

reset button is press ed, the control enters Idle

Mode.

If temperature

trip-point exceeded

If both temperature

sensors become open

When reset

button is pressed

If reset but ton

is pressed

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Alliance Laundry Systems BU170S Service Manual Page 14