MELINK INTELLI-HOOD-2 CONTROLS
KEYPAD DISPLAYS AND AUDIBLE SOUNDS
Typical Display
Normal Operation
In Normal Operation, the keypad will cycle through 4 hoods (H-1, H-2 …) displaying a
bar graph for each hood channel indicating the fan speed of that channel.
Clean Light – Blank or Flashing Red and Green
Clean Light should be blank at all times of Normal Operation. Clean Light will flash red
and green if there is an Optics Fault. See Optics Fault in the Troubleshooting list
following.
Fault Light – Blank or Green
In Normal Operation, fault light will be blank or green. A blank fault light indicates
Normal Operation with no faults. A green fault light indicates that the system is
receiving a digital input on one of the digital input terminals 25 through 33. A green fault
light is a normal occurrence on many systems.
Fault Light – Red
Fault light will change to red in the case of any fault. See fault codes in the
Troubleshooting list following.
Sounds
Keypad is typically silent. In Normal Operation, it will beep only when buttons are
pressed such as turning it on/off or turning lights on/off. Keypad will beep if it is
commanded by an external input to turn on using Remote on/off function. Keypad may
beep indicating other problems. See Troubleshooting list following.
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