THEORY
Ve ct or™ H Se ries ▪ S ervice Ma nual ▪ MN -4 6 54 3 ▪ R ev 01 ▪ 11/ 19
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Rapid ON/OFF State
Background Each chamber transitions to the rapid ON/OFF state if the chamber temperature
is greater than 20°F (11°C) from the temperature setpoint.
The chamber blower fans are driven at 70% rotation speed by the VFDs.
Component State
Control panel ON
LCD backlight ON
Heaters ON, if chamber temperature is > 20°F (11°C) below the
temperature setpoint
OFF, if chamber temperature is > 20°F (11°C) above the
temperature setpoint
Cooling fans ON
Blower ON, at 70%
Buzzer / speaker OFF
Chamber light Blinks until the door is opened
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