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• Check that “NONE” of the thermal and magnetic overloads have “TRIPPED.”
• Check circuitry; ADG-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 ADG-464 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 AD-464 Main Electrical Panel Wiring Diagram and AD-464 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 ADG-464 Main
Panel Wiring Diagram, the ADG-464 Solenoid Junction Box Wiring Diagram, and the ADG-464
Ladder Diagram.
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.