Alliance Laundry Systems 602004144 User Manual

© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT

70400101 (EN)

18

Power Up
After 24VAC 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. 
Termination of Flame
The flame will go out when power is removed from 

ignition control. The ignition control will turn off the 

gas valve and enter Standby Mode.
Lockout Mode
When Lockout Mode is entered, the ignition control 

will remove power to the gas valve, the igniter will 

turn off, the Lockout/Reset Light will turn on, and the 

Diagnostic LED will display the appropriate Error 

Code.
Lockout Manual Reset
Lockout Mode is cleared by pressing an external reset 

switch for three seconds. The ignition control will 

clear all error codes and enter Standby Mode. During 

Lockout Manual Reset, the Diagnostic LED on the 

ignition control flashes red and orange, and the Reset 

Light remains on until the ignition control is reset. 

After the Reset Light turns off, stop pressing the 

switch. Holding the reset for three seconds after 

lockout has been cleared will cause a fault and result in 

entering Lockout Mode again.