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• Check that “NONE” of the thermal and magnetic overloads have “TRIPPED.”
• Check circuitry; MLG-464 Main Panel Wiring Diagram
• Retest
7b) To verify burner fan motor contactor (MS8) operation:
Apply a 110 VAC voltage to MS8’s terminals A1 and A2 and verify that the contactor activates.
• If MS8 cycles this will indicate that its OK. Verify wiring to the device using the dryer Main
Panel Wiring Diagram.
• If MS8 “DOES NOT” cycle;
• Check device and replace if necessary
• Retest
8b) Flame Detector & Burner Chassis Ground
To test the flame detector signal refer to Section VI, Part D, Gas Burner and Ignition System on
page 37 thru page 45.
• If the flame detector test fails:
• Verify that the flame detector and burner chassis connections, located on the left side if the burner,
are sound and tight.
• Check wiring (See dryer Main Electrical Panel Wiring Diagram and dryer Solenoid Junction
Box Wiring Diagram).
• Retest
9b) To test the burner controller module itself;
Refer to Section VI, Part D, Gas Burner and Ignition System on page 37 thru page 45 for
wiring information, concerning the Burner Controller Module (BCM), refer to the Main Panel Wiring
Diagram, the Solenoid Junction Box Wiring Diagram, and the Ladder Diagram. (Supplied with the
dryer.)
5. “AIR FAULT” Message
PLC (Programmable Logic Controller) MESSAGE “AIR FAULT”
a) PROBABLE CAUSES;
1a) Incorrect Fan (Blower) Rotation.
2a) Lint Chamber Air Pressure Switch.