Hot Dawg
®
Troubleshooting Guide20
Six Flashes – Main Air Mover Doesn’t Cycle On
The information below is related to situations where the main air mover
DOES NOT cycle on:
This usually occurs as a result of an open in the safety switch circuit:
• Limit switch or ame roll out switch is open
Unit Sequence:
• Green light on, call for heat, power exhauster cycles on, pre-purge
• 24 VAC power present through pressure switch, limits and to valve
• Igniter sparks, burner cycles on, yellow ame light turns on, board is on
• After three to four minutes, unit goes out on a limit switch, yellow light turns
off, green light then ash six times
Possible Causes:
• Loose wires
– Check all wiring for a loose wire
• Defective motor
– 115 VAC at EAC and neutral terminals on board, but motor does
not turn on
• Defective board
– 115 VAC not present at EAC and neutral terminals
– For more information on xing or replacing a defective board,
reference page 23.
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