HP High Speed Dryer 104in User Manual page 19

9. Air flow lamp indicates the air flow from the fan at three levels: High (H), Medium (M) and Low (L).
10. Heater Error lamp: This is lit when the temperature of the top cover is too high.
CAUTION When the Heater Error lamp comes on, press the heater button to stop warm
air operation, and blow air at the maximum flow level (H) for 10 minutes to cool the inside
of the dryer. After the dryer cools down, turn off the dryer using the main power switch,
then contact our service center.
Do not touch the dryer soon after turning it off as the dryer will still be hot.
ENWW Operation panel components 13