Modine Manufacturing HD - Flame Status - Yellow LED Labeled Flame

Hot Dawg
®
Troubleshooting Guide4
Flame Status – Yellow LED Labeled “Flame”
Flame status LED is lit when ame is sensed.
Flame LED ashes slowly when ame current is below
1.0uA (+/- 50%), to indicate a “weak” ame.
Flame LED ashes fast when ame is present with gas valve off.
• If ame is sensed longer than four seconds while the gas valve is
de-energized, the control shall energize the power exhauster and indoor
blower motor
• When ame is no longer sensed, the power exhauster will run through
post-purge and the blower motor will run through fan off delay time
• The control will do a soft lockout, but will still respond to open limit and ame
• Flame LED shall ash rapidly when lockout is due to undesired ame