Refer to the system ladder diagram for “HEAT” signal information. There are several safety devices that must be satisfied prior to ignition. Any one of these safety devices can cause NO IGNITION, therefore a “BURNER FAULT”...i.e., FRONT AIRFLOW SWITCH

REAR AIRFLOW SWITCH

EXHAUST MANUAL RESET HI-LIMIT SWITCH FRONT BURNER MANUAL RESET HI-LIMIT SWITCH REAR BURNER MANUAL RESET HI-LIMIT SWITCH DEFECTIVE ELECTRICAL HEAT CIRCUIT

ONE BURNER WILL NOT IGNITE AT THE BEGINNING OF A CYCLE

This condition can be caused by the following:

DEFECTIVE DSI (Direct Spark Ignition) MODULE

DEFECTIVE SPARK IGNITOR/FLAME-PROBE ASSEMBLY

DEFECTIVE GAS VALVE

INSUFFICIENT GAS PRESSURE

DEFECTIVE ELECTRICAL HEAT CIRCUIT

Refer to the ladder diagram and the schematics provided with this machine for reference to the above listed information.

ONE BURNER WILL NOT IGNITE DURING A DRYING CYCLE

This condition can be caused by the following:

DEFECTIVE DSI (Direct Spark Ignition) MODULE

DEFECTIVE SPARK IGNITOR/FLAME-PROBE ASSEMBLY

DEFECTIVE GAS VALVE

DEFECTIVE ELECTRICAL HEAT CIRCUIT

LOSS OF GAS PRESSURE

Refer to the ladder diagram and the schematics provided with this machine for reference to the above listed information.

CONTROL POWER (Indicator/Control Power On Push-Button)

This “GREEN LIGHTED” Push-Button is for enabling the 24 VAC control voltage to the control circuits of the machine. This push-button indicator must be “ON” for the system to load or dry material.

Refer to the ladder diagram included with this ML-410 for the function of this push-button in the 24 VAC control voltage latching control circuit.

CONTROL POWER (Off Push-Button)

This “RED NON-LIGHTED”Push-Button is for disabling the 24 VAC control voltage to the control circuits of the machine.

Refer to the ladder diagram included with this ML-410 for the function of this push-button in the 24 VAC control voltage latching control circuit.

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American Dryer Corp ML-410 manual ONE Burner will not Ignite AT the Beginning of a Cycle