"Power On"- indicates control power is present at main controller

"No Air"- Indicates air proofing device has detected a significant loss of air flow at discharge

"Low Temp."- indicates elements are no longer able to maintain the preset temperature
(Unit will completely shut down unless Low Temp Shut Down is overridden by timer or manual switch)

"Over Heat"- indicates an overheat condition has occurred

"Element No. 1"- indicates element is on, with the LED modulating on and off, as required to maintain the preset temperature

"Man. Fan"- a manual switch is provided to override the Low Temp Shut Down and switch the fan to max speed

"Reset"- a reset switch is provided to restart the unit and reset the Low Temp override timer after a low temp condition has occurred