5-4
Troubleshooting
CT Hoods and DD Ventilation
Downdraft
Symptom
Diagnostic Test
Resolution
Periscope does not go up
No power to the unit
Plug in power cord or reset power supply
breaker
“Up/Down” LED does not
illuminate on touch control
Check continuity of communication cable
and replace if bad
Replace
Touch
Control
Gear Motor defective
Replace Gear Motor
Defective Crank Assembly
Check U-Clamps for tightness
If stripped replace Crank Assembly
Check for 120 VAC from yellow
to white at Control Board while
pressing “Up/Down” on touch
control
If “Up/Down” LED is illuminated but no
voltage change Control Board
Periscope begins to move but will
not continue to top or bottom of
cycle
Defective Front Cam Switch
Replace Cam Switch
Defective Crank Assembly
Check U-Clamps for tightness
If stripped replace Crank Assembly
Gear Motor defective
Replace Gear Motor
Periscope does not go down
No power to the unit
Plug in power cord or reset power supply
breaker
Gear Motor defective
Replace Gear Motor
Defective Crank Assembly
Check U-Clamps for tightness
If stripped replace Crank Assembly
Periscope installed incorrectly
Reinstall Periscope
Check for 120 VAC from yellow
to white at Control Board while
pressing “Up/Down” on touch
control
If “Up/Down” LED is illuminated but no
voltage change Control Board
Blower does not run
No power to the unit
Plug in power cord or reset power supply
breaker
Remote blower improperly wired Check Wiring Section
LED on touch control for selected
speed is not illuminated
Check continuity of communication cable
and replace if bad
Replace Touch Control
Defective blower motor
Replace motor
Verify Rear Cam Switch is
dropping into Cam valley at top of
periscope movement
Replace Gear Motor assembly w/switches
Rear Cam Switch not providing
120 VAC to orange wire w/
periscope at top of movement and
switch in valley
Replace Rear Cam switch
120 VAC not present from Orange
to White at Control Board w/
periscope up
Replace Control Board
Summary of Contents for CT
Page 2: ......
Page 3: ...1 1 General Information CT Hoods and DD Ventilation SECTION 1 GENERAL INFORMATION ...
Page 8: ...1 6 General Information CT Hoods and DD Ventilation NOTES ...
Page 9: ...2 1 Installation Information CT Hoods and DD Ventilation SECTION 2 INSTALLATION INFORMATION ...
Page 35: ...Controls Operation CT Hoods and DD Ventilation 3 1 SECTION 3 CONTROLS OPERATION ...
Page 39: ...Access Removal CT Hoods and DD Ventilation 4 1 SECTION 4 COMPONENT ACCESS REMOVAL ...
Page 54: ...Access Removal CT Hoods and DD Ventilation 4 16 NOTES ...
Page 55: ...5 1 Troubleshooting CT Hoods and DD Ventilation SECTION 5 TROUBLESHOOTING ...
Page 62: ...5 8 Troubleshooting CT Hoods and DD Ventilation NOTES ...
Page 63: ...6 1 Technical Data CT Hoods and DD Ventilation SECTION 6 TECHNICAL DATA ...
Page 66: ...6 4 Technical Data CT Hoods and DD Ventilation NOTES ...
Page 67: ...Wiring Schematics CT Hoods and DD Ventilation 7 1 SECTION 7 WIRING DIAGRAMS SCHEMATICS ...
Page 68: ...Wiring Schematics CT Hoods and DD Ventilation 7 2 MODEL CTWH30 WIRING DIAGRAM ...
Page 69: ...Wiring Schematics CT Hoods and DD Ventilation 7 3 MODEL CTWH36 WIRING DIAGRAM ...
Page 70: ...Wiring Schematics CT Hoods and DD Ventilation 7 4 MODEL IH4227 WIRING DIAGRAM ...
Page 72: ...Wiring Schematics CT Hoods and DD Ventilation 7 6 MODEL DD30 DD36 SCHEMATIC ...
Page 76: ...Wiring Schematics CT Hoods and DD Ventilation 7 10 MODEL DD30 DD36 CONTROL SCHEMATIC ...
Page 77: ...Wiring Schematics CT Hoods and DD Ventilation 7 11 MODEL DD POWER SUPPLY WIRING ...
Page 80: ...Wiring Schematics CT Hoods and DD Ventilation 7 14 BLOWER SCHEMATIC 600 900EXT ...
Page 81: ...Wiring Schematics CT Hoods and DD Ventilation 7 15 BLOWER SCHEMATIC 1200EXT ...
Page 82: ...Wiring Schematics CT Hoods and DD Ventilation 7 16 BLOWER SCHEMATIC 1500EXT ...
Page 83: ...8 1 Parts Exploded CT Hoods and DD Ventilation SECTION 8 PARTS LISTS EXPLODED VIEWS ...
Page 98: ...8 16 Parts Exploded CT Hoods and DD Ventilation NOTES ...