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Operation
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70400401
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Rotation Sensor
The rotation sensor must “read” the key on the basket
shaft or pulley. The sensor must be set approximately
1/4 inch from the key or pulley. Look for the light on
the sensor to come on as the key passes on the sensor;
this is a correctly operating sensor. If no light appears,
either the sensor is out of range or the key/pulley or the
sensor is bad. In addition, if the light stays on
continuously, then the sensor is too close to the
component or the sensor is bad.
Safety Tumble/Anti-Wrinkle
At the end of the cool down cycle, the tumbler will
stop and display “END.” The DMP control will
automatically rotate the basket for 5 seconds every
2 minutes for a total of 20 minutes, until some
function of the tumbler is activated/deactivated by the
user.
Operational Check for the Board Diagnostics
1. “dor” indicates that the loading or lint door is
open.
2. Cycle the tumbler to check if the buzzer activates.
3. “P-F” indicates that the thermistor is short
circuited or open circuited.
4. “bbt” indicates a broken belt condition or a faulty
rotation sensor. (Only available on tumblers with
the rotation sensor.)
5. Hold the START button to display the drum
RPMs; the display will read “r##” where ## are
the RPMs. (Only available on tumblers with the
rotation sensor.)
Ignition Control Operation
Power Up
After 24 VAC is applied to the ignition control pins
24V and GND, the Diagnostic LED on the ignition
control will turn orange/yellow. If a fault is detected
the ignition control will enter Lockout Mode. If no
faults are detected, the Diagnostic LED will turn
Green and the ignition control will enter Standby
Mode.
Standby Mode
While in Standby Mode, the ignition control will
continually monitor the system for faults. Once
24VAC is applied to terminals TH and GND on the
control, the ignition control will enter Start Up Mode.
Start Up Mode
During Start Up Mode, the ignition control will
monitor the system for faults and begin the ignition
sequence. If no faults are present, the ignition control
will begin the ignition sequence by entering an 18
second waiting period. During this time the Green
LED on the ignition control will switch between Red
and Green, before maintaining a Green color.
After the waiting period, the ignition control will turn
on the igniter and gas valve. The igniter will remain on
until a flame is sensed, or up to 10 seconds.
Once a flame has been sensed the ignition control will
stop sparking, the gas valve will remain on and
ignition control will enter Run Mode.
If a flame is not sensed, the ignition control will then
begin two additional retrials for ignition. The ignition
control will re-enter the 18 seconds waiting period
before the ignition control makes another attempt at
ignition. If the three attempts at ignition fail, the
ignition control will enter Lockout Mode.
Run Mode
While in Run Mode the ignition control leaves the gas
valve on, monitors the flame signal, and leaves the
igniter off.
If a flame signal is lost during Run Mode, one
additional retrial for ignition will take place within one
second. The ignition control will restore the spark for
approximately 10 seconds. If the ignition re-attempt
fails, the ignition control will enter Lockout Mode.
The ignition control will remain in Run Mode until
24VAC is removed from terminals TH and GND on
the control.